[android-developers] Re: MVC Architecture
Why? Because the Wikipedia entry on the topic just is not that good. In fact, MOST of the sites that show up in a Google search for MVC are just not that good. The only sites I found on the topic that are good are: 1) apple developer sites on it and 2) IBM developer works. (in the developer works search field, enter model view controller java). 3) Ward Cunningham's Wiki on Patterns: http://c2.com/cgi-bin/wiki?ModelViewController So I suggest instead of just Googling mvc or model view controller he should narrow things down to the good stuff with apple developer mvc. The article in Cocoa Design Patterns is particularly good, though several others are also well worth reading. Everything I have read in the Apple Developer Library concerning MVC is quite applicable to Android -- and MUCH better written than anything in the Android documentation. Let me repeat that: MUCH better written. Once you have read a few of these sites, you will understand the pitfalls of the point of view that In most cases, I think, you are a mere user of MVC implemented by Android SDK. If you are a naive user of the SDK classes, and are not very aware of what the MVC pattern is, then you will make mistakes in applying it despite the design of the classes, and you will NOT benefit from the 'pattern-ness' of the MVC pattern. A classic example of how to fail to benefit from the pattern-ness is shown in Lecture 1.pdf of Stanford University's CS193 course on iPhone programming, which shows both how to do it and how NOT to do it. It is available from iTunes University, free. Again: everything in that lecture concerning MVC is just as applicable to the Android SDK. Even the name changes are slight. On Jan 13, 1:41 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com wrote: I am with TreKing on this one. The question is very vague. Does Sree want to know about MVC in general? His question certainly looks so. If so, then it's hardly Android SDK, and Wikipedia has an entry for it, so why wasting people time and bandwidth. This list seems to have a lot of noise like that (victim of Android's success) and one receives around 50 posts every hour, out of which maybe 3 are relevant, well formed and interesting. If it is about MVC in Android, then it is still quite generic and speculative, but interesting. I don't think that you implement MVC as such as long as you use Activity and View objects. You could, when taking full controll of the screen, like in a game with your custom UI. In most cases, I think, you are a mere user of MVC implemented by Android SDK. Activity hosts Views so it is a View + Controller, but can easily hold Model objects too, in case when model is small. Model could also be implemented separately by a Service or Content Provider. Daniel On 13 January 2012 08:20, Android2ee mathias.seguy...@gmail.com wrote: Ok, nice first answer. The question is not stupid, because an Activity mix life cycle and view, so implementing MVC is not so obvious. And to make simple, your activity manage lifeCycle and delegate GUI to your GUI package. In that package you do usual MVC. In fact you implement usual layers separation (Model, View, BuisnessService, Service (i mean android service), DAO (that contains usual DAO and your Content providers) and you also have the Communication layer and the transversal one), as usual in Java. You just need to manage your models' life cycle according to your activity life cycle. And it should work. On Jan 13, 6:21 am, TreKing treking...@gmail.com wrote: On Thu, Jan 12, 2012 at 10:46 PM, Sree sreelathapavul...@gmail.com wrote: I want some information about MVC Architecture http://www.justfuckinggoogleit.com/ --- -- TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago transit tracking app for Android-powered devices -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Daniel Drozdzewski -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] AwesomePagerAdapter initial position
Does anyone know how to set the initial position of the
AwesomePagerAdapter in the compatibility package.
I've been trying to use setPrimaryItem but don't know how, see my
feeble attempt below but don't know what parameters to pass in
awesomeAdapter = new AwesomePagerAdapter();
awesomePager = (ViewPager) findViewById(R.id.awesomepager);
awesomePager.setAdapter(awesomeAdapter);
awesomeAdapter.setPrimaryItem(null, pos, null);
private class AwesomePagerAdapter extends PagerAdapter {
@Override
public void setPrimaryItem(View collection, int position, Object
object) {
Object primary = instantiateItem(collection, position);
super.setPrimaryItem(collection, position, object);
}
...
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Read sensor value without using SensorEventListener
Hi, Is there a way to read the sensor value without using the SensorEventListener? My understanding is that the SensorEventListener.onSensorChanged() method will tell me the sensor value but only when the value changes. I want to read the sensor value when the user clicks a button. Thanks, Ambi. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Android fragmentation study
Thanks Dianne, for such a detailed answer. I understand the limitations you describe, both of the Compatibility process and AppWidgets themselves. The use case of animations here could be considered trivial, but I do think it adds tremendous perceived value to an app. Consider a simple Gallery widget, which toggles between a range of the users pre- selected images every few seconds. An alpha animation which fades in the new image instead of simply replacing it gives a lot of polish and wow factor. Without that animation, it still works, as you point out, but in my particular case, the animations themselves are really part and parcel of my app, it being a Weather Widget which has the unique selling point of being fully animated. With the animation stripped out, the USP is lost. I guess it then comes down to where you draw the line on retaining functionality, from my point of view the animation is part of the functionality, as it is the raison d'etre of the app... As the animations are fully valid and supported by the SDK, I would argue that moving forward they should be a part of the CTS, notwithstanding the difficulty of actually testing that! But wouldn't that same difficultly be present testing that the particular implementation supported animations on normal views and layouts within Activities? I guess you are right and I just lucked out here, the full OpenGL Samsung homescreen sounds like the most likely root of the problem. I logged the issue with Samsung development team, and they reproduced it and marked it for further action in a future firmware, so let's hope that in ICS it is fixed in their homescreen. Anyway thanks again for taking the time to reply and for filing this for future investigation, I appreciate it. Regards, James Dusk Jockeys Android Apps http://duskjockeys.blogspot.com/ On Jan 14, 2:11 am, Dianne Hackborn hack...@android.com wrote: On Fri, Jan 13, 2012 at 5:13 AM, Dusk Jockeys Android Apps duskjock...@gmail.com wrote: Thanks Dianne, for this infomation on Compatibility Testing. Couuld you clarify the exact scope? Is it the devices core API that have to pass or their implementation of it? It is everything covered in the CTS tests. These test public APIs amongst other things. On the latest Samsung Tablets (e.g. Tab 7 Plus) the LayoutAnimation on AppWidgets doesn't work in their TouchWiz homescreen. From the log cat it seems they are deliberately stripping them out. This works perfectly in AppWidgets in the emulator from all APIs since 1.5, and on most other realworld devices. However, if I install another Homescreen app on the Tablet such as Go Launcher, the AppWidgets are fine and display the LayoutAnimations correctly. Hm, that is certainly unfortunate. I can imagine good reasons for this -- for example if their home screen is all implemented in OpenGL, they would need to render the app widgets into a separate texture and draw them to the screen with that. This would make executing animations and such in them pretty problematic. I'll file an issue for this to have it investigated. So it their Touchwiz homescreen covered by the CTS, or do they pass because their underlying Android implementation supports it, as shown by Go Launcher, and it is just my tough luck that their particular Home Screen is not fully featured? Well to be honest it is hard for CTS specifically to cover this kind of thing, because it is pretty unclear how to write an API unit test that is able to verify that some other application is performing the animation on the screen. However, the overall CDD covers a lot of things -- for example if you look athttp://static.googleusercontent.com/external_content/untrusted_dlcp/s... there is section 3.8.1 on app widgets, with the relevant requirement being: Device implementations MAY substitute an alternative to the reference Launcher (i.e. home screen). Alternative Launchers SHOULD include built-in support for AppWidgets, and expose user interface affordances to add, configure, view, and remove AppWidgets directly within the Launcher.Alternative Launchers MAY omit these user interface elements; however, if they are omitted, the device implementation MUST provide a separate application accessible from the Launcher that allows users to add, configure, view, and remove AppWidgets. Device implementations must be capable of rendering widgets that are 4 x 4 in the standard grid size. (See the App Widget Design Guidelines in the Android SDK documentation [Resources, 18] for details. So I think technically right now there is nothing wrong with not showing animations, as long as the app widget is still functional. It is worth considering whether this requirement should be more specific... though to be honest, this may just become irrelevant since with 4.0 the UI is all hardware accelerated so there would be little benefit anymore to use OpenGL to implement launcher (if that is what they
[android-developers] intent action.CALL_PRIVILEGED
i used this code in the manifest file intent-filter action android:name=android.intent.action.CALL_PRIVILEGED / category android:name=android.intent.category.DEFAULT / data android:scheme=tel / /intent-filter but i cant find the .CALL_PRIVILEGED in the intent action to access the event if ( intent.getAction().equals(Intent.ACTION_CALL_PRIVILEGED) ) it is there any other action can i use it to access it thanks for reply -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Unable to execute Bluetooth HDP Demo
Hi jfernandez... i upgrade my android version to 4.03 and still can't connect... Could you please show me the changes that you made? Thank you On 13 Jan, 10:57, jfernandez jorge.fernandez.gonza...@gmail.com wrote: Hi again, Well, after upgrading my Android 4.0 to 4.03, and adding some changes to the BluetoothHDPsample, I'm able to connect to the biomedical device, as well as I'm able to read/write data from/to theHDP channel. So, it seems the problem has been fixed in this new Android version. Regards. On 15 dic 2011, 18:30, jfernandez jorge.fernandez.gonza...@gmail.com wrote: Hi all, I'm executing theBluetoothHDPDemo [1] (offered from Android 4.0 Ice Cream Sandwich) in my Android smartphone. When I have registered the application in order to receive data, and I have paired the biomedical device with the smartphone, I try to open the channel connection and I can see that the device starts sending data to the smartphone. However, the smartphone is unable to open the channel connectionHDP. At the end of this message you can see the output obtained in the LogCat. Has anybody achieved to run successfully this sample about the use of theBluetoothHealth Profile API? Any ideas? Thanks. Regards. [1]http://developer.android.com/resources/samples/BluetoothHDP/index.html This is the log that I obtain: 12-15 16:40:54.048: I/BluetoothHDPService(1105): connectChannel() 12-15 16:40:54.068: D/BluetoothService(147): CONNECTION_STATE_CHANGE: 00:80:25:14:A1:BC: 0 - 1 12-15 16:40:55.169: D/ConnectivityService(147): handleInetConditionHoldEnd: net=1, condition=0, published condition=0 12-15 16:40:59.393: D/BluetoothEventLoop(147): Device property changed: 00:80:25:14:A1:BC property: Connected value: true 12-15 16:41:00.024: D/BluetoothEventLoop(147): Health Device : devicePath: /org/bluez/278/hci0/dev_00_80_25_14_A1_BC:channelPath:/org/ bluez/278/hci0/dev_00_80_25_14_A1_BC/chan3115:existstrue 12-15 16:41:00.034: E/BluetoothService.cpp(147): getChannelApplicationNative 12-15 16:41:00.044: E/bluetooth_common.cpp(147): dbus_func_args_timeout_valist: D-Bus error in Acquire: org.bluez.Error.HealthError (Cannot reconnect: MDL is not closed) 12-15 16:41:00.044: E/BluetoothHealthProfileHandler(147): Error obtaining fd for channel:/org/bluez/278/hci0/dev_00_80_25_14_A1_BC/ chan3115 12-15 16:41:00.074: E/BluetoothService.cpp(147): destroyChannelNative 12-15 16:41:00.074: E/BluetoothEventLoop.cpp(147): onHealthDeviceConnectionResult: D-Bus error: org.bluez.Error.HealthError (Mdl is not created) 12-15 16:41:00.074: D/BluetoothEventLoop(147): onHealthDeviceConnectionResult 2 6001 12-15 16:41:00.214: D/BluetoothEventLoop(147): onHealthDeviceConnectionResult 2 6000 12-15 16:41:00.214: D/BluetoothEventLoop(147): Health Device : Name of Property is: MainChannel Value:/org/bluez/278/hci0/ dev_00_80_25_14_A1_BC/chan3115 -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Android fragmentation study
On Sat, Jan 14, 2012 at 5:21 AM, Dusk Jockeys Android Apps duskjock...@gmail.com wrote: from my point of view the animation is part of the functionality, as it is the raison d'etre of the app... As Ms. Hackborn pointed out, there is no law requiring home screens to support animations. *Any* home screen, whether written by a device manufacturer or an independent developer, might elect to suppress your animations (e.g., a PowerSaver brand home screen that specifically disables certain things, like app widget animations, to save battery life). Hence, from your USP standpoint, you need to de-emphasize animations, or point out that they work only with compliant home screens. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] threading : two independent events
On Sat, Jan 14, 2012 at 1:41 AM, vishal garg vishal17g...@gmail.com wrote: I have an android app code where 1) 1st process : checks for user location constantly after every t minutes. 2) 2nd process : displays an image on the screen Why are these two processes? 99.99% of Android applications do not need more than one process. There is nothing in this description that would justify the cost to the user in CPU, RAM, and battery from your decision. The processes are independent and but the code gets stuck in the first process as a result of which second process does not load. I am thinking of using threading to resolve but unable to understand/find documentation. Please help. Please ask specific questions, not just please help. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Unable to execute Bluetooth HDP Demo
Hi Fernando, I have introduced a change in the implementation of the BluetoothHealthCallback mHealthCallback. Exactly, in its method onHealthChannelStateChange(...). I detected that the state machine during the stablishment of a new HDP connection is: Disconnected- Connecting-Connected. However, you can see that the example is checking the case Disconnected-Connected, but not the case Connecting- Connected. I added this new case Connecting-Connected, and now it works and I'm able to read/write data from/to UA-767PBT-C and a board that emulates several biomedical devices. I hope it help you. Regards. On 14 ene, 12:35, Fernando Almeida reala...@gmail.com wrote: Hi jfernandez... i upgrade my android version to 4.03 and still can't connect... Could you please show me the changes that you made? Thank you On 13 Jan, 10:57, jfernandez jorge.fernandez.gonza...@gmail.com wrote: Hi again, Well, after upgrading my Android 4.0 to 4.03, and adding some changes to the BluetoothHDPsample, I'm able to connect to the biomedical device, as well as I'm able to read/write data from/to theHDP channel. So, it seems the problem has been fixed in this new Android version. Regards. On 15 dic 2011, 18:30, jfernandez jorge.fernandez.gonza...@gmail.com wrote: Hi all, I'm executing theBluetoothHDPDemo [1] (offered from Android 4.0 Ice Cream Sandwich) in my Android smartphone. When I have registered the application in order to receive data, and I have paired the biomedical device with the smartphone, I try to open the channel connection and I can see that the device starts sending data to the smartphone. However, the smartphone is unable to open the channel connectionHDP. At the end of this message you can see the output obtained in the LogCat. Has anybody achieved to run successfully this sample about the use of theBluetoothHealth Profile API? Any ideas? Thanks. Regards. [1]http://developer.android.com/resources/samples/BluetoothHDP/index.html This is the log that I obtain: 12-15 16:40:54.048: I/BluetoothHDPService(1105): connectChannel() 12-15 16:40:54.068: D/BluetoothService(147): CONNECTION_STATE_CHANGE: 00:80:25:14:A1:BC: 0 - 1 12-15 16:40:55.169: D/ConnectivityService(147): handleInetConditionHoldEnd: net=1, condition=0, published condition=0 12-15 16:40:59.393: D/BluetoothEventLoop(147): Device property changed: 00:80:25:14:A1:BC property: Connected value: true 12-15 16:41:00.024: D/BluetoothEventLoop(147): Health Device : devicePath: /org/bluez/278/hci0/dev_00_80_25_14_A1_BC:channelPath:/org/ bluez/278/hci0/dev_00_80_25_14_A1_BC/chan3115:existstrue 12-15 16:41:00.034: E/BluetoothService.cpp(147): getChannelApplicationNative 12-15 16:41:00.044: E/bluetooth_common.cpp(147): dbus_func_args_timeout_valist: D-Bus error in Acquire: org.bluez.Error.HealthError (Cannot reconnect: MDL is not closed) 12-15 16:41:00.044: E/BluetoothHealthProfileHandler(147): Error obtaining fd for channel:/org/bluez/278/hci0/dev_00_80_25_14_A1_BC/ chan3115 12-15 16:41:00.074: E/BluetoothService.cpp(147): destroyChannelNative 12-15 16:41:00.074: E/BluetoothEventLoop.cpp(147): onHealthDeviceConnectionResult: D-Bus error: org.bluez.Error.HealthError (Mdl is not created) 12-15 16:41:00.074: D/BluetoothEventLoop(147): onHealthDeviceConnectionResult 2 6001 12-15 16:41:00.214: D/BluetoothEventLoop(147): onHealthDeviceConnectionResult 2 6000 12-15 16:41:00.214: D/BluetoothEventLoop(147): Health Device : Name of Property is: MainChannel Value:/org/bluez/278/hci0/ dev_00_80_25_14_A1_BC/chan3115 -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Geo coder not provides exact location
Read the documentation about RequestLocationUpdates parameters. Clean up your code, remove duplicate instructions (you unregister twice) . -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Location extraction from cell ID returned
The cells certainly know where YOU are based on the antenna sector and power level. Do you see any of that data on the device? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] OnDraw for whole screen
I am trying to draw a simple shape on whatever is on the screen - say a filled rectangle. I suspect I need to somehow get access to the OnDraw for the whole screen. * How do i do this? I need to do this with everything else running as normal... i.e. there should be a box that constantly appears over everything else. One should be able to click through the box. I would love any help with this. Thank you. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] OnDraw for whole screen
On Sat, Jan 14, 2012 at 8:56 AM, Hydro Misco niranpaud...@gmail.com wrote: I am trying to draw a simple shape on whatever is on the screen - say a filled rectangle. I suspect I need to somehow get access to the OnDraw for the whole screen. * How do i do this? Your activity can retrieve any of its widgets via findViewById(). Though only lightly documented, android.R.id.content is the widget ID for your activity's content view (or, more accurately, the FrameLayout into which Android loads your content view). -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: gps waiting problem.
I often send emails from my phone, but good writing is still important. On Jan 13, 2012 9:26 PM, Dhaval Varia dhavalkva...@gmail.com wrote: Jst bcoz i m sending email from my mobile Thanks for reply. On Jan 14, 2012 12:38 AM, Spiral123 cumis...@gmail.com wrote: wh d u kp drppng ltrs? I thnk ths pst answrs ur que: http://stackoverflow.com/questions/5895283/locationlistener-and-timers On Jan 13, 12:24 pm, Dhaval Varia dhavalkva...@gmail.com wrote: my que is in this code locationmanager.removeupdate() Has called, but still getaddress() is calling for few times. i think after locatiomanager.removeupdate() , onlocationchange() should mot call.right? bt it is calling. inturn, getaddress() is calling for few time. I want that getaddress() should not call after having address,based on lat-long. What to do? On Jan 13, 2012 10:38 PM, Dhaval Varia dhavalkva...@gmail.com wrote: my que is in this code locationmanager.removeupdate Has called but getaddress is calling few time. i think after remove it, onlocationchange should mot call.right? bt it call. inturn,getaddress is calling for few time. I dnt want to call after having address from lat-long. What to do? On Jan 13, 2012 10:17 PM, Spiral123 cumis...@gmail.com wrote: that is not a snippet. Problem is : 1. UpdateRemove doesn't work. I can't see any reference to 'UpdateRemove' in your code. what is the error in the LogCat and what line of code does it happen at? 2. I need to do following thing : - Get Address Once (By calling getaddress()), - After Getting Address,UpdataLocation function should not call. -- so, Address will setOnce Timer should stop Application Finish() / Close errr...well that is a statement, not a question. What is your question? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Fwd: [android-developers] Real-time video streaming/disabling or configuring MediaPlayer caching-buffering
Giving this a last bump in hopes of a response...any ideas or otherwise not commonly known or documented information on the Android MediaPlayer would be extremely welcome. Thanks, Brad Brad O'Hearne Founder / Lead Developer Big Hill Software LLC http://www.bighillsoftware.com Begin forwarded message: From: Brad O'Hearne br...@bighillsoftware.com Subject: [android-developers] Real-time video streaming/disabling or configuring MediaPlayer caching-buffering Date: January 11, 2012 2:05:05 PM MST To: Android Developers android-developers@googlegroups.com Reply-To: android-developers@googlegroups.com Hello, I am trying to play a real-time video stream with the Android MediaPlayer. The use case prioritizes real-time rendering to the screen over smooth playback. Restated, I am not interested in smooth un-interrupted playback such as watching a movie or YouTube video or webcast, where video is typically buffered, if even minimally, to achieve smooth playback. What I need to do is eliminate as much latency as possible between the video source stream and playback, so that the delay between a direct rendering at the source and the playback of the stream on an Android tablet is as small as possible. Presently, I have an app which plays an RTSP stream with the MediaPlayer, and I'm encountering a latency of around 4 seconds, which is unacceptable for this use case. I am seeking 1 second latency. I have been looking high and low for any way to configure the MediaPlayer, and it doesn't appear that there are really any knobs or switches on it to adjust. Specifically what I'd like to do is the following: 1. Adjust or disable entirely caching and buffering within the MediaPlayer. 2. Tell the MediaPlayer to ignore any processing for audio, which is not needed in this use case. 3. Potentially be able to control or monitor the network transport of the stream (much less important than #1). 4. It would be great to be able to get some statistical data on what part of the pipeline latency exists: network transport, buffering, decoding, rendering, etc. (again, much less important than #1). If anyone has any ideas or suggestions for the above, I'd really appreciate it. Even alternative solutions for accomplishing the need are welcome (though this is a commercial application, and so GPL source isn't an alternative), though the ideal solution would be to leverage the native MediaPlayer. Thanks in advance for your assistance. Regards, Brad Brad O'Hearne Founder / Lead Developer Big Hill Software LLC http://www.bighillsoftware.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Real-time video streaming/disabling or configuring MediaPlayer caching-buffering
On Sat, Jan 14, 2012 at 11:45 AM, Brad O'Hearne br...@bighillsoftware.com wrote: 1. Adjust or disable entirely caching and buffering within the MediaPlayer. 2. Tell the MediaPlayer to ignore any processing for audio, which is not needed in this use case. 3. Potentially be able to control or monitor the network transport of the stream (much less important than #1). 4. It would be great to be able to get some statistical data on what part of the pipeline latency exists: network transport, buffering, decoding, rendering, etc. (again, much less important than #1). AFAIK, nothing of what you seek is supported from the SDK. I haven't checked out the NDK's ability to work directly with the screen recently -- I know it can do OpenGL, but I'm not sure if a push buffers-style approach is possible. If it is, you might be able to use the NDK to roll your own streaming mechanism that meets your requirements. Also, if this is for custom hardware, all you seek should be possible via custom firwmare, albeit perhaps sans much documentation. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Real-time video streaming/disabling or configuring MediaPlayer caching-buffering
Mark, Thanks for the reply. That's pretty much what I suspected -- I'll check out the NDK. Brad Brad O'Hearne Founder / Lead Developer Big Hill Software LLC http://www.bighillsoftware.com On Jan 14, 2012, at 9:52 AM, Mark Murphy wrote: On Sat, Jan 14, 2012 at 11:45 AM, Brad O'Hearne br...@bighillsoftware.com wrote: 1. Adjust or disable entirely caching and buffering within the MediaPlayer. 2. Tell the MediaPlayer to ignore any processing for audio, which is not needed in this use case. 3. Potentially be able to control or monitor the network transport of the stream (much less important than #1). 4. It would be great to be able to get some statistical data on what part of the pipeline latency exists: network transport, buffering, decoding, rendering, etc. (again, much less important than #1). AFAIK, nothing of what you seek is supported from the SDK. I haven't checked out the NDK's ability to work directly with the screen recently -- I know it can do OpenGL, but I'm not sure if a push buffers-style approach is possible. If it is, you might be able to use the NDK to roll your own streaming mechanism that meets your requirements. Also, if this is for custom hardware, all you seek should be possible via custom firwmare, albeit perhaps sans much documentation. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OnDraw for whole screen
Replying back to the list, where this belongs: On Sat, Jan 14, 2012 at 12:22 PM, Hydro Misco niranpaud...@gmail.com wrote: Hey Mark, Thanks for answering this question for me - I dont quite understand it though. can you perhaps point me to an online sample? I just need to understand the fundamentals, namely, is it possible to have a formless application that will draw over whatever is on screen? I need it to do it constantly. I am most certainly not going to help you with that. There is a way to do it, but it involves techniques that IMHO are security flaws in Android, though Google disagrees with me on that point. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Continuously running Service does not run continuously
Hi,
I am writing a service which shall continuously log some sensor data
over longer periods of time. For testing purposes the service shall
log a static debug message once every second. Looking at the log file,
after some time (usually 30min to several hours), the logging only
takes place every 10 minutes, every half an hour or sometimes even
only once an hour. When I connect the phone to my computer, the
service starts logging every second again.
There are already some posts dealing with the same problem, but I did
not find an appropriate answer. Maybe someone can help to clarify ?
Here are some details of the implementation:
The service is started once the device completed its boot process (or
once the corresponding activity is launched) using:
Intent serviceIntent = new Intent(getApplicationContext(),
TestService.class);
startService(serviceIntent);
The service itself overrides onStartCommand() with
public int onStartCommand(Intent intent, int flags, int startId)
{
return START_STICKY;
}
so that the service shall be restarted if Android decides to stop it.
And in the onCreate method I start a periodic task to log:
Timer timer = new Timer();
timer.schedule(new TimerTask() {
public void run()
{
writeToDebugFile(TestService: Control Message.,
getApplicationContext());
}
}, 0, 1000);
As an alternative I tried to create my own logging-thread, but that
did not help either.
I also tried to let the service run in the foregound using
startForeground(334, myNotification);
without success.
I tested the implementation with an out-of-the-box Nexus Prime, with
no other apps installed or running.
Just in case someone wants to replay the problem, an eclipse export of
a minimal test case can be downloaded here:
http://www.hyfy.de/temp/ContinuousServiceTest.zip
Thanks for any comments !
Regards Dirk
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Directory structure for project related files
All of my android projects usually have a /tmp folder where I dump all the stuff that isn't necessary for building the apk, such as psd/xcf files, the 512x512 icon, screenshots and the signed apk that will be uploaded to the market. I'm also considering adding these files to my version control just to make sure I have all the files in one place and to have them backed up. Are there any best practices for organizing such files? Or has anyone any suggestions or personal preferences to share? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Continuously running Service does not run continuously
On Sat, Jan 14, 2012 at 12:43 PM, Dirk b...@informatik.uni-hamburg.de wrote: I am writing a service which shall continuously log some sensor data over longer periods of time. For testing purposes the service shall log a static debug message once every second. Looking at the log file, after some time (usually 30min to several hours), the logging only takes place every 10 minutes, every half an hour or sometimes even only once an hour. When I connect the phone to my computer, the service starts logging every second again. That is because the phone is falling asleep. Users like it when their phone falls asleep, as this maximizes battery life. The service is started once the device completed its boot process (or once the corresponding activity is launched) using: Intent serviceIntent = new Intent(getApplicationContext(), TestService.class); startService(serviceIntent); You do not need getApplicationContext() here. Please replace it with the this object reference. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Directory structure for project related files
I wouldn't call it tmp/, as that would make me think of Linux and OS X /tmp, which are files that can be deleted without incident. I've used various other directory names for stuff like this (e.g., artwork/, misc/). If assets/ weren't already used by Android for another role, I would probably have settled on that. But I do like having it co-located with the rest of the project files, and in version control, for the same reasons you do. On Sat, Jan 14, 2012 at 12:44 PM, nadam a...@anyro.se wrote: All of my android projects usually have a /tmp folder where I dump all the stuff that isn't necessary for building the apk, such as psd/xcf files, the 512x512 icon, screenshots and the signed apk that will be uploaded to the market. I'm also considering adding these files to my version control just to make sure I have all the files in one place and to have them backed up. Are there any best practices for organizing such files? Or has anyone any suggestions or personal preferences to share? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Continuously running Service does not run continuously
Thank you Mark ! Is there a way to control the device's sleep phases programmatically, so I can make sure the logging really takes place ? Regards Dirk On 14 Jan., 18:48, Mark Murphy mmur...@commonsware.com wrote: On Sat, Jan 14, 2012 at 12:43 PM, Dirk b...@informatik.uni-hamburg.de wrote: I am writing a service which shall continuously log some sensor data over longer periods of time. For testing purposes the service shall log a static debug message once every second. Looking at the log file, after some time (usually 30min to several hours), the logging only takes place every 10 minutes, every half an hour or sometimes even only once an hour. When I connect the phone to my computer, the service starts logging every second again. That is because the phone is falling asleep. Users like it when their phone falls asleep, as this maximizes battery life. The service is started once the device completed its boot process (or once the corresponding activity is launched) using: Intent serviceIntent = new Intent(getApplicationContext(), TestService.class); startService(serviceIntent); You do not need getApplicationContext() here. Please replace it with the this object reference. -- Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy Android Training in NYC:http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Continuously running Service does not run continuously
On Sat, Jan 14, 2012 at 1:00 PM, Dirk b...@informatik.uni-hamburg.de wrote: Is there a way to control the device's sleep phases programmatically, so I can make sure the logging really takes place ? Use a WakeLock to keep the CPU running. Your users may not like you much, though. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Continuously running Service does not run continuously
The way you should read mark's response here is: Don't keep the cpu running, this is a dumb idea, if you're really doing this it probably indicates there is something wrong with your design If this is *strictly* for development, and you'll completely strip out the code when you release your app, it would probably be fine. kris On Sat, Jan 14, 2012 at 1:05 PM, Mark Murphy mmur...@commonsware.com wrote: On Sat, Jan 14, 2012 at 1:00 PM, Dirk b...@informatik.uni-hamburg.de wrote: Is there a way to control the device's sleep phases programmatically, so I can make sure the logging really takes place ? Use a WakeLock to keep the CPU running. Your users may not like you much, though. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Continuously running Service does not run continuously
Also unless you make your service foreground, its process *will* be killed every now and then while it is in the background. And you can use the AlarmManager to avoid holding a wake lock the entire time, but a rate of once a second is way to fast to be appropriate for that -- scheduling Alarms should not be in terms of anything quicker than once a minute and really more like once every 5 minutes or more. On Sat, Jan 14, 2012 at 11:00 AM, Kristopher Micinski krismicin...@gmail.com wrote: The way you should read mark's response here is: Don't keep the cpu running, this is a dumb idea, if you're really doing this it probably indicates there is something wrong with your design If this is *strictly* for development, and you'll completely strip out the code when you release your app, it would probably be fine. kris On Sat, Jan 14, 2012 at 1:05 PM, Mark Murphy mmur...@commonsware.com wrote: On Sat, Jan 14, 2012 at 1:00 PM, Dirk b...@informatik.uni-hamburg.de wrote: Is there a way to control the device's sleep phases programmatically, so I can make sure the logging really takes place ? Use a WakeLock to keep the CPU running. Your users may not like you much, though. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Continuously running Service does not run continuously
And to really really re-iterate -- we are still only talking about non-production code. On Sat, Jan 14, 2012 at 11:16 AM, Dianne Hackborn hack...@android.comwrote: Also unless you make your service foreground, its process *will* be killed every now and then while it is in the background. And you can use the AlarmManager to avoid holding a wake lock the entire time, but a rate of once a second is way to fast to be appropriate for that -- scheduling Alarms should not be in terms of anything quicker than once a minute and really more like once every 5 minutes or more. On Sat, Jan 14, 2012 at 11:00 AM, Kristopher Micinski krismicin...@gmail.com wrote: The way you should read mark's response here is: Don't keep the cpu running, this is a dumb idea, if you're really doing this it probably indicates there is something wrong with your design If this is *strictly* for development, and you'll completely strip out the code when you release your app, it would probably be fine. kris On Sat, Jan 14, 2012 at 1:05 PM, Mark Murphy mmur...@commonsware.com wrote: On Sat, Jan 14, 2012 at 1:00 PM, Dirk b...@informatik.uni-hamburg.de wrote: Is there a way to control the device's sleep phases programmatically, so I can make sure the logging really takes place ? Use a WakeLock to keep the CPU running. Your users may not like you much, though. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: OnDraw for whole screen
Just out of curiosity, what would be the non malicious use case you had in mind here, Hydro? kris On Sat, Jan 14, 2012 at 12:41 PM, Mark Murphy mmur...@commonsware.com wrote: Replying back to the list, where this belongs: On Sat, Jan 14, 2012 at 12:22 PM, Hydro Misco niranpaud...@gmail.com wrote: Hey Mark, Thanks for answering this question for me - I dont quite understand it though. can you perhaps point me to an online sample? I just need to understand the fundamentals, namely, is it possible to have a formless application that will draw over whatever is on screen? I need it to do it constantly. I am most certainly not going to help you with that. There is a way to do it, but it involves techniques that IMHO are security flaws in Android, though Google disagrees with me on that point. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Logcat is broken every time phone is unplugged
Every time the phone is unplugged from USB, the logcat is permanently corrupted in that the when the phone is reconnected, logcat does not reestablish. Restarting an app, either in debug or run mode produces zero logcat output after that point. Closing the logcat window view and reopening it has no effect. The only solution is to quit and restart Eclipse. Therefore, I must quit and restart Eclipse every time I take my phone with me and then later return. I've been having this problem since day one with Android development, three years ago. In that time I have installed new versions of Eclipse and numerous updates to the Android SDK and Eclipse plugin. Nothing has ever improved the situation w.r.t. this bug. Anyone know anything about this? Thanks. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Logcat is broken every time phone is unplugged
I haven't seen that on any of my devices. What's the phone? On Sat, Jan 14, 2012 at 3:24 PM, Keith Wiley kbwi...@gmail.com wrote: Every time the phone is unplugged from USB, the logcat is permanently corrupted in that the when the phone is reconnected, logcat does not reestablish. Restarting an app, either in debug or run mode produces zero logcat output after that point. Closing the logcat window view and reopening it has no effect. The only solution is to quit and restart Eclipse. Therefore, I must quit and restart Eclipse every time I take my phone with me and then later return. I've been having this problem since day one with Android development, three years ago. In that time I have installed new versions of Eclipse and numerous updates to the Android SDK and Eclipse plugin. Nothing has ever improved the situation w.r.t. this bug. Anyone know anything about this? Thanks. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Logcat is broken every time phone is unplugged
G1, OS 1.6 Eclipse Helious I'm part way through installing Android SDK rev 16, but like I said, this has been persistent across a variety of versions of all the associated pieces. I don't understand why I haven't seen more reports of this. Thanks for any help. On Jan 14, 12:27 pm, Mark Murphy mmur...@commonsware.com wrote: I haven't seen that on any of my devices. What's the phone? On Sat, Jan 14, 2012 at 3:24 PM, Keith Wiley kbwi...@gmail.com wrote: Every time the phone is unplugged from USB, the logcat is permanently corrupted in that the when the phone is reconnected, logcat does not reestablish. Restarting an app, either in debug or run mode produces zero logcat output after that point. Closing the logcat window view and reopening it has no effect. The only solution is to quit and restart Eclipse. Therefore, I must quit and restart Eclipse every time I take my phone with me and then later return. I've been having this problem since day one with Android development, three years ago. In that time I have installed new versions of Eclipse and numerous updates to the Android SDK and Eclipse plugin. Nothing has ever improved the situation w.r.t. this bug. Anyone know anything about this? Thanks. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy Android Training in NYC:http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Fragment view state is getting lost after couple of orientation changes
I reported an issue but i yet to get the response... http://code.google.com/p/android/issues/detail?id=24273 FYI: I have attached my complete test project named Fragments in the above reported issue. Could you just let me know the best way to save the state of the views in fragments? because after a couple of fragment replacement, if you try to do orientation change and come back to previous fragment, the view state of fragments which is saved in the bundle is lost. Is that i have to save the state of views in each fragment using the bundle in onSaveInstanceState() and retrieve it back through onCreate(), onCreateView(), or onActivityCreated()??? If this is the case i have already tried it and it doesn't work which i reported as an issue http://code.google.com/p/android/issues/detail?id=24273; (OR) Is that I need to save the state of each views in each fragment in the Activity itself?? If this is the case, then it will be a huge task to save each and every views in each fragment to be saved in activity and i think this will be crazy. I googled for it and found a link which says a solution for it, but it's not using the bundle functionality to restore the view state, which you could find in the below link. http://stackoverflow.com/questions/8260451/fragment-backstack-bug-when-replacing-fragments-in-a-transaction Hope you got what i am looking for. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Logcat is broken every time phone is unplugged
On Sat, Jan 14, 2012 at 3:35 PM, Keith Wiley kbwi...@gmail.com wrote: G1, OS 1.6 Eclipse Helious I'm part way through installing Android SDK rev 16, but like I said, this has been persistent across a variety of versions of all the associated pieces. I don't understand why I haven't seen more reports of this. I just dusted off my G1 and I cannot reproduce your problem. When I unplug and re-plug in the G1, LogCat shows all the old entries, plus any new ones from whatever app I run. Perhaps try a different micro USB cable. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Extremely odd Canvas Paint Vector Problem
I am having a really odd problem that works for somethings but not
others. It feels more like a bug than a code problem to me.
I have tried may different approaches. However, I think the following
sums up the issue in it's simplest form. It does not represent the
code I want to use in my application. It is only to test this
problem.
If I use the following code and draw on my Canvas using a Paint
variable it works
TestPaint1 = new Paint();
TestPaint1.setAntiAlias(true);
TestPaint1.setTextSize(CurrentTextSize);
TestPaint1.setDither(true);
TestPaint1.setColor(CurrentColor);
TestPaint1.setStyle(Paint.Style.STROKE);
TestPaint1.setStrokeJoin(Paint.Join.ROUND);
TestPaint1.setStrokeCap(Paint.Cap.ROUND);
TestPaint1.setStrokeWidth(CurrentLineWidth);
I also use the above code to create TestPaint2 and TestPaint3
DrawingCanvas = getHolder().lockCanvas();
DrawingCanvas.drawLines
If I use the following code Canvas.drawCircle() and
Canvas.drawOval()work, but drawLine,drawRect, etc do NOT work.
public Paint CreatePaint(){
Paint TempPaint = new Paint();
TempPaint.setAntiAlias(true);
TempPaint.setTextSize(CurrentTextSize);
TempPaint.setDither(true);
TempPaint.setColor(CurrentColor);
TempPaint.setStyle(Paint.Style.STROKE);
TempPaint.setStrokeJoin(Paint.Join.ROUND);
TempPaint.setStrokeCap(Paint.Cap.ROUND);
TempPaint.setStrokeWidth(CurrentLineWidth);
return TempPaint;
}
Vector PaintVector
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Extremely odd Canvas Paint Vector Problem
I am having a horrible day. This was NOT supposed to post yet. Please
ignore and I will try to delete it.
On Jan 14, 2:37 pm, JamesColeman jamescole...@radicalphotography.com
wrote:
I am having a really odd problem that works for somethings but not
others. It feels more like a bug than a code problem to me.
I have tried may different approaches. However, I think the following
sums up the issue in it's simplest form. It does not represent the
code I want to use in my application. It is only to test this
problem.
If I use the following code and draw on my Canvas using a Paint
variable it works
TestPaint1 = new Paint();
TestPaint1.setAntiAlias(true);
TestPaint1.setTextSize(CurrentTextSize);
TestPaint1.setDither(true);
TestPaint1.setColor(CurrentColor);
TestPaint1.setStyle(Paint.Style.STROKE);
TestPaint1.setStrokeJoin(Paint.Join.ROUND);
TestPaint1.setStrokeCap(Paint.Cap.ROUND);
TestPaint1.setStrokeWidth(CurrentLineWidth);
I also use the above code to create TestPaint2 and TestPaint3
DrawingCanvas = getHolder().lockCanvas();
DrawingCanvas.drawLines
If I use the following code Canvas.drawCircle() and
Canvas.drawOval()work, but drawLine,drawRect, etc do NOT work.
public Paint CreatePaint(){
Paint TempPaint = new Paint();
TempPaint.setAntiAlias(true);
TempPaint.setTextSize(CurrentTextSize);
TempPaint.setDither(true);
TempPaint.setColor(CurrentColor);
TempPaint.setStyle(Paint.Style.STROKE);
TempPaint.setStrokeJoin(Paint.Join.ROUND);
TempPaint.setStrokeCap(Paint.Cap.ROUND);
TempPaint.setStrokeWidth(CurrentLineWidth);
return TempPaint;
}
Vector PaintVector
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Logcat is broken every time phone is unplugged
Hmmm, okay. I don't have one that fits the G1's connecter, but I'll consider the suggestion. Sigh. On Jan 14, 12:47 pm, Mark Murphy mmur...@commonsware.com wrote: Perhaps try a different micro USB cable. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OnDraw for whole screen
I am trying to make an app that applies a particular 'filter over screen contents e.g. sapia. Nothing sinister. On Jan 14, 7:26 pm, Kristopher Micinski krismicin...@gmail.com wrote: Just out of curiosity, what would be the non malicious use case you had in mind here, Hydro? kris On Sat, Jan 14, 2012 at 12:41 PM, Mark Murphy mmur...@commonsware.com wrote: Replying back to the list, where this belongs: On Sat, Jan 14, 2012 at 12:22 PM, Hydro Misco niranpaud...@gmail.com wrote: Hey Mark, Thanks for answering this question for me - I dont quite understand it though. can you perhaps point me to an online sample? I just need to understand the fundamentals, namely, is it possible to have a formless application that will draw over whatever is on screen? I need it to do it constantly. I am most certainly not going to help you with that. There is a way to do it, but it involves techniques that IMHO are security flaws in Android, though Google disagrees with me on that point. -- Mark Murphy (a Commons Guy) http://commonsware.com|http://github.com/commonsguy http://commonsware.com/blog|http://twitter.com/commonsguy Android Training in NYC:http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Navigation Tabs converted to Drop down on orientation change in Action bar of ICS.
Can you post a sample project that demonstrates your problem? On Fri, Jan 13, 2012 at 6:32 AM, Sudeep Sharma sudeep.andr...@gmail.com wrote: Hi Guys, I have a query related to Action bar in ICS. As we all know Action bar supports both mode , 1. Navigation Tabs 2. Drop-down Navigation. I have an Activity with Action bar and added Navigation Tabs such that each Tab text is lengthy. (say TAB1, TAB2, TAB3, TAB4. etc...) So the view i will be seeing in the portrait mode will be as shown in snapshot_portrait.png which is attached with this email. If the Tab doesn't fit in Portrait mode, the desired tab can be reached by fling action. Now changing the orientation, the Tabbed view changes to a drop down if all the tabs doesnt fit the entire landscape view width. I wanted to have the same Tabbed views in landscape mode too where fling action can slide the tabs.. Please can anybody let me know how can i achieve this. Appreciate your quick reply. Thanks... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Directory structure for project related files
Can we be sure that any randomly named directory added to the project folder is not going to be included in the app package? For instance, the folder named assets does get included, but misc does not? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Directory structure for project related files
On Sat, Jan 14, 2012 at 7:11 PM, RLScott fixthatpi...@yahoo.com wrote: Can we be sure that any randomly named directory added to the project folder is not going to be included in the app package? For instance, the folder named assets does get included, but misc does not? AFAIK, only well-defined directories like assets/, res/, src/, and libs/ will contribute to the APK contents. To put it another way, there's no point in putting it into the APK if we can't read it out. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in NYC: http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Package name
I have an app in the market already. the package name, by mistake, is com.android.AAA, now, i want to change to my company name YYY.BBB, is that possible? Will market allow updates changing package name? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Android fragmentation study
Hi Diane! From your response I sense that I must have touched a nerve. Please don't misunderstand my intentions in making these assertions. I'm not an Android hater, I'm a disillusioned believer. I'm not the only one though: http://techcrunch.com/2012/01/14/ok-mg-i-take-it-back/ http://www.zdnet.com/blog/open-source/androids-biggest-worry-fragmentation/8022 On 1/12/2012 4:26 PM, Dianne Hackborn wrote: On Wed, Jan 11, 2012 at 8:31 PM, Christopher Van Kirk christopher.vank...@gmail.com mailto:christopher.vank...@gmail.com wrote: Making software is a business. An investment. To reap maximum rewards on that investment the product has to have as much reach as possible, meaning the OP is absolutely on point about OS upgrades. Who is going to spend 10k, 100k, 1m, etc, developing an app whose target market is less than 1% of active installs? 4.0 won't be an attractive target for developers until it commands at least 80% of the installed market, which will likely take at least a year to occur, perhaps longer. How different is this from a new major version of Windows coming out? It seems like at least a year until they start to get significant traction. Windows does have an advantage in that user can buy a copy of the newer OS and install it if some app they want needs it... but as an app developer, requiring a newer version of the OS than the user has is probably not likely to get most of those potential users to buy and install an upgrade to their entire OS. I'm not sure what your point is here. Developers have the same dilemma in the Windows space, although to be fair, the changes from version to version are far less frequent and far less dramatic than what's happening in the Android space. Even so, something like 40% of the PC market is still on XP even though it's now 11 years old and beyond its support lifetime. But since you brought it up, you're right. Windows releases generally require some time to be adopted. I don't think that refutes the OPs point in any way. Also, Windows isn't your competition in the mobile space, iOS is, and iOS does not suffer from this problem. As for what's different, I guess the major thing is that with Windows the end user can install the new OS whenever they want to, even on old hardware. There's always an upgrade path open for them, whereas in most of the officially sanctioned Android universe this isn't an option. Instead, people are supposed to buy new phones with the new software pre-installed on it, and generally that's subsidized with long term contracts to keep them locked into the carrier and the device. Sure, there is a sizable hacking community that will help the brave and technically savvy to bypass the sanctioned update pipeline, but depending on them to save your 4.0 exclusive app seems it would be like an exceptionally poor business decision. Finally, there's rarely a new version of Windows to contend with, whereas with Android we have something new every 6 months or so. Comparing handset differences with browser difference is just absurd. How many browser versions are there? Five maybe six? An average Android app has to deal with over 600 different devices today. That's a difference of 100x. This number is also growing at an exponential rate, so even if you can manage to test on all of those devices, in three months you'll probably have to do the same number again. You are significantly exaggerating about 600 different devices... if you are going to say that, you could just as well say there are hundreds if not thousands of different PCs running windows... not to mention all those different graphics cards and drivers and what-not... crazy! The Android market tells me that my app is accessible to 600 devices. If that's not true then I guess it has a bug. Again the comparison to Windows. iOS is your competition, not Windows. Having said that, though, Windows does run on thousands of configurations of hardware, and yes, each of those configurations is a different 'PC'. It's also much more stable and predictable in doing so than Android seems to be. I know that comes at the expense of a larger OS, but honestly, the phones out there now are getting close in terms of capability to the low end PC market anyway. Yes it is true that there is some more variation between devices because of the ability of manufacturers to do customizations... but for the most part this doesn't impact apps (see below), and for those situation when it does you are looking at 3 or 4 major manufacturers with their own customizations, not 600. Few manufacturers doesn't mean few implementations of the OS, unfortunately. I personally have seen different devices from the same manufacturer have different behaviors in various places. What you're apparently not appreciating is that unlike the PC/Mac world, the Android world lacks strong compatibility
[android-developers] Regarding screen orientation changes
Hi All,
As far as i know, screen orientation can be changed by two ways, one is
through Manifesto file and other is through code by setRequestedOrientation
API.
My requirement is to show the screen orientation in Landscape mode, only
when it launched through one particular application.
To satisfy the above requirement i cannot use the first solution, i.e..
setting the screen orientation through Manifesto file, since it always
launch the activity in the specified orientation. So, now I am forced to
take up the second solution, i.e.. setting the orientation through code by
calling setRequestedOrientation
(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE).
I am facing a problem with this approach, if my tablet is in LANDSCAPE
mode, this solution works perfectly fine. But when my device is in PORTRAIT
mode, initially it launches the activity in PORTRAIT mode and immediately
changes the orientation to LANDSCAPE mode. How this flickering can be
avoided ? Please through some light to handle this requirement.
Manifesto file snippet:
activity
android:name=.activity.setup.AccountSetup
android:label=@string/account_setup_title
android:theme=@style/AccountSetup
android:configChanges=orientation|keyboardHidden
/activity
Code snippet:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (App.SETUP_WIZARD_FLOW == true) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
}
setContentView(R.layout.main);
}
Regards,
Jayantheesh
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Package name
When you try to change the package name it won't allow an update, so I believe you are out of luck. On Jan 14, 2012 7:35 PM, yves...@gmail.com yves...@gmail.com wrote: I have an app in the market already. the package name, by mistake, is com.android.AAA, now, i want to change to my company name YYY.BBB, is that possible? Will market allow updates changing package name? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Regarding screen orientation changes
It sounds like your requirements, or understanding is off, so you may want
to check it out.
The confusion is, if you automatically switch to landscape always then set
it in the manifest.
If you start in portrait mode then why switch them? Or what should happen
differently on this orientation?
On Jan 14, 2012 9:20 PM, Jay SB jsb.andr...@gmail.com wrote:
Hi All,
As far as i know, screen orientation can be changed by two ways, one is
through Manifesto file and other is through code by setRequestedOrientation
API.
My requirement is to show the screen orientation in Landscape mode, only
when it launched through one particular application.
To satisfy the above requirement i cannot use the first solution, i.e..
setting the screen orientation through Manifesto file, since it always
launch the activity in the specified orientation. So, now I am forced to
take up the second solution, i.e.. setting the orientation through code by
calling setRequestedOrientation
(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE).
I am facing a problem with this approach, if my tablet is in LANDSCAPE
mode, this solution works perfectly fine. But when my device is in PORTRAIT
mode, initially it launches the activity in PORTRAIT mode and immediately
changes the orientation to LANDSCAPE mode. How this flickering can be
avoided ? Please through some light to handle this requirement.
Manifesto file snippet:
activity
android:name=.activity.setup.AccountSetup
android:label=@string/account_setup_title
android:theme=@style/AccountSetup
android:configChanges=orientation|keyboardHidden
/activity
Code snippet:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (App.SETUP_WIZARD_FLOW == true) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
}
setContentView(R.layout.main);
}
Regards,
Jayantheesh
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Regarding screen orientation changes
James,
Thanks for your response.
I am working on Email application, my requirement is to show all the screen
orientation only in landscape mode irrespective of device orientation, only
when it launched through one particular application (Application X). If i
launch the Email app through some other applications (Application y and z),
it should always follow the device orientation.
So, to satisfy the above requirement, when Email application is launched
from Application x, i have used the API setRequestedOrientation
(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE) to change the
orientation. When my device is PORTRAIT mode, and when its launched through
Application X, all the Email screens are initially launched in PORTRAIT
(Device orientation )mode and then its switching back to LANDSCAPE mode
(because of the above API). How to avoid this screen flickering ?
Hope you will understand my problem.
Regards,
Jayantheesh
On Sat, Jan 14, 2012 at 9:51 PM, James Black planiturth...@gmail.comwrote:
It sounds like your requirements, or understanding is off, so you may want
to check it out.
The confusion is, if you automatically switch to landscape always then
set it in the manifest.
If you start in portrait mode then why switch them? Or what should happen
differently on this orientation?
On Jan 14, 2012 9:20 PM, Jay SB jsb.andr...@gmail.com wrote:
Hi All,
As far as i know, screen orientation can be changed by two ways, one is
through Manifesto file and other is through code by setRequestedOrientation
API.
My requirement is to show the screen orientation in Landscape mode, only
when it launched through one particular application.
To satisfy the above requirement i cannot use the first solution, i.e..
setting the screen orientation through Manifesto file, since it always
launch the activity in the specified orientation. So, now I am forced to
take up the second solution, i.e.. setting the orientation through code by
calling setRequestedOrientation
(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE).
I am facing a problem with this approach, if my tablet is in LANDSCAPE
mode, this solution works perfectly fine. But when my device is in PORTRAIT
mode, initially it launches the activity in PORTRAIT mode and immediately
changes the orientation to LANDSCAPE mode. How this flickering can be
avoided ? Please through some light to handle this requirement.
Manifesto file snippet:
activity
android:name=.activity.setup.AccountSetup
android:label=@string/account_setup_title
android:theme=@style/AccountSetup
android:configChanges=orientation|keyboardHidden
/activity
Code snippet:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (App.SETUP_WIZARD_FLOW == true) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
}
setContentView(R.layout.main);
}
Regards,
Jayantheesh
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Package name
No, Market doesn't allow that. Here's what you could do instead: Publish your app under the new company/package name and wait for it to be live. Once that's done, publish an update to your older app. That update should simply change the app into redirecting users to the new app on the Market and politely apologize for the inconvenience and ask them to remove the old app after installing the new one. You could also detect the old app when running the new one and, if found, suggest the user to uninstall it. You need to be careful though with the user data though. You should provide means for them to migrate that data from the old app to the new one *BEFORE UNINSTALLING IT* or they'll lose everything. Maybe an export/import procedure will do the job. If you do it right, it only takes a few seconds for them to export all the data from the old app and import it into the new one. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] How to implement scrolling for custom layout?
I am trying to develop a custom ViewGroup to implement sort of a gantt
chart with vertical and horizontal scrolling.
So I went about the job and implemented following view
I find following issues with this code.
[1] when onScroll is called I see some flicker and not been able
to successfully use _scroller.startScroll
[2] while scrolling onMeasure and onLayout rely on _scroller to get the
correct scrolling positions, however since there is some delay between
onMeasure and onLayout, _scroller would provide different values for
_scroller.getCurrX() and_scroller.getCurrY()in both the functions.So
measure and layout may easily go out of sync.
How do I solve these two issues? For two I can think of implementing
onMeasure and onLayout in the same method say in onLayout or in onLayout
use the scroller position that is measured in onMeasure.
For [1] if I use view's scrollBy, I see there is no flickers but it calls
invalidate internally and onMeasure and onLayout will not be called and my
view will not get a layout refresh.
Any help would be greatly appreciated.
package com.example.android.layout;
import android.content.Context;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.view.ViewGroup;
import android.widget.Scroller;
public class CustomView extends ViewGroup implements OnGestureListener {
private GestureDetector gestureScanner;
private Scroller _scroller;
private int _viewPortX, _viewPortY;
public CustomView(Context context, AttributeSet attrs) {
super(context, attrs);
gestureScanner = new GestureDetector(this);
_scroller = new Scroller(this.getContext());
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// add a child view from adapter (if view is not already present and
// needs to be shown)
// remove unwanted views
// called measure on children
// call setMeasuredDimension((widthMeasureSpec), (heightMeasureSpec));
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// Layout children here
// ...
if (_scroller.computeScrollOffset()) {
scrollNow(_scroller.getCurrX(), _scroller.getCurrY());
/* This is necessary to request layout while in layout loop */
post(new Runnable() {
public void run() {
requestLayout();
}
});
}
}
@Override
public boolean onTouchEvent(MotionEvent me) {
return gestureScanner.onTouchEvent(me);
}
public void scrollNow(float x, float y) {
_viewPortX = (int) x;
_viewPortY = (int) y;
requestLayout();
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float
velocityX,float velocityY) {
_scroller.fling(_viewPortX, _viewPortY, (int) velocityX, (int) velocityY,
0, _maxX, 0, _maxY);
requestLayout();
return true;
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
// doing this and not reliying on scroller, and no call to
_scroller.startScroll
int scrollToX = _viewPortX - (int) distanceX;
scrollToX = Math.min(scrollToX, _maxX);
scrollToX = Math.max(scrollToX, 0);
int scrollToY = _viewPortY - (int) distanceY;
scrollToY = Math.min(scrollToY, _maxY);
scrollToY = Math.max(scrollToY, 0);
scrollNow(scrollToX, scrollToY);
return true;
}
@Override
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
return true;
}
@Override
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onLongPress(MotionEvent e) {
// TODO Auto-generated method stub
}
}
Thanks
harvinder
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Android fragmentation study
Hi Mark, Yes, I understand that this is the position I am in, and I have to adapt to that. My point was more that although there is no explicit law requiring home screens to support animations, from my reading of the CTD there is also no explicit law requiring views in normal Activities to support animations, but I think there would be a lot of complaints from developers if those kind of animations suddenly stopped working in the latest handsets. But having said that I realise I am on shaky ground here... as we are talking about homescreen apps which are not part of the framework per se. However, from the user's point of view (who I would guess in 99% of cases use the Home screen which came with their phone), it is part of the framework, they would naturally think it is due to that phones implementation of Android, rather than understanding it is the Home screen app itself. Anyway, it is what it is, so back to work... Regards James On Jan 14, 7:51 pm, Mark Murphy mmur...@commonsware.com wrote: On Sat, Jan 14, 2012 at 5:21 AM, Dusk Jockeys Android Apps duskjock...@gmail.com wrote: from my point of view the animation is part of the functionality, as it is the raison d'etre of the app... As Ms. Hackborn pointed out, there is no law requiring home screens to support animations. *Any* home screen, whether written by a device manufacturer or an independent developer, might elect to suppress your animations (e.g., a PowerSaver brand home screen that specifically disables certain things, like app widget animations, to save battery life). Hence, from your USP standpoint, you need to de-emphasize animations, or point out that they work only with compliant home screens. -- Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy Android Training in NYC:http://marakana.com/training/android/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
