[android-developers] connect android app to remote web services
Hello evrybody, i would like to ask you what can i do to let my android application connect to remote web services . When i tried with local configuration on the emulator it works fine but when i m changing the url to connect to the remote server ( by DNS) the web services are not reached from the android client. Can someone help me please ? Thanks. -- *REZGUI Asma * *Consultant J2EE* -- 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] connect android app to remote web services
On Mon, Dec 8, 2014 at 4:05 AM, asma rezgui asmarezgu...@gmail.com wrote: Can someone help me please ? You'll have to provide a little more information, like how you're trying to connect, what URL you're trying to connect to, and what errors you're seeing. - 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] connect android app to remote web services
I have helped here already... she was not having the internet connection on her device and therefor thei application was throwing the exception hostnotfound and also she did not returned the statment on exception but instead trying to do the json parsing. On Mon, Dec 8, 2014 at 7:36 PM, TreKing treking...@gmail.com wrote: On Mon, Dec 8, 2014 at 4:05 AM, asma rezgui asmarezgu...@gmail.com wrote: Can someone help me please ? You'll have to provide a little more information, like how you're trying to connect, what URL you're trying to connect to, and what errors you're seeing. - 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Warm Regards, *Mukesh Kumar*, Android Consultant/Freelancer, India,Hyderabad. -- 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] connect android app to remote web services
Thank you a lot for your help 2014-12-08 18:50 GMT+01:00 Mukesh Srivastav mukicha...@gmail.com: I have helped here already... she was not having the internet connection on her device and therefor thei application was throwing the exception hostnotfound and also she did not returned the statment on exception but instead trying to do the json parsing. On Mon, Dec 8, 2014 at 7:36 PM, TreKing treking...@gmail.com wrote: On Mon, Dec 8, 2014 at 4:05 AM, asma rezgui asmarezgu...@gmail.com wrote: Can someone help me please ? You'll have to provide a little more information, like how you're trying to connect, what URL you're trying to connect to, and what errors you're seeing. - 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Warm Regards, *Mukesh Kumar*, Android Consultant/Freelancer, India,Hyderabad. -- 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- *REZGUI Asma * *Consultant J2EE* -- 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] Re: Is it possible, that Android kills a service inside an app?
*The Service can still be killed by Android.*
Any proofs?
not any proofs, but just some discussion is possible:
Read this:
http://developer.android.com/reference/android/content/Context.html#startService%28android.content.Intent%29
From above, there is a line:
The only time they should be stopped is if the current foreground
application is using so many resources that the service needs to be killed.
This is talking about the OOM killer.
In traditional Linux OOM is initiated from the kernel. But here in
Android there is a special lowmemorykiller daemon:
https://source.android.com/devices/tech/low-ram.html (looked out for
lowmemorykiller, the name as it is)
Under Android source code:
frameworks/base/services/core/java/com/android/server/am/ActiveServices.java:
final void killServicesLocked(ProcessRecord app, boolean allowRestart) {
frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java:
mServices.killServicesLocked(app, allowRestart);
You can see the caller and the implementer of the function above. It is
where BIND_ALLOW_OOM_MANAGEMENT parameter are checked, and thus killing the
services is done if necessary.
More info:
http://stackoverflow.com/questions/18972590/the-timing-to-start-android-low-memory-killer
http://forum.xda-developers.com/showthread.php?t=904023
And this is from Linux kernel source code (under drivers/staging/android
means it is still yet to be approved by linux kernel - at that time):
http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/drivers/staging/android/lowmemorykiller.txt
http://www.programering.com/a/MjNzADMwATE.html
http://lwn.net/Articles/511731/
http://varun-anand.com/mem_mgmt.html
Regards,
Peter Teoh
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[android-developers] onCharacteristicWrite Error Status 14
I am writing an Android app and using api 18 to do BTLE. I am able to connect, discover services and characteristics and read the characteristic from the peripheral. When I try to write using WriteCharacterstic I get the onCharacteristicWrite, but the status is 14. I can't find this status anywhere in the documentation or anywhere else. The value does not make it to the peripheral. Can someone tell me what this code means and why the value might not be writing? -- 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Yet another case of not getting BTLE notifications
I have read several posting on this same thing and tried all of the
suggestions.
I am able to discover and connect to my BTLE device (it is actually an iOS
device).
My Android device is 4.4 and has BTLE.
After I connect and get all the services and characteristics I try to read
the one I am using and it works fine. If I update the value on the iOS
device and do another read I get the new value as I would expect.
I use this code:
protected static final UUID
CHARACTERISTIC_UPDATE_NOTIFICATION_DESCRIPTOR_UUID = UUID.fromString(
2902--1000-8000-00805f9b34fb);
if (gatt.setCharacteristicNotification(characteristic, true)) {
BluetoothGattDescriptor descriptor =
characteristic.getDescriptor(CHARACTERISTIC_UPDATE_NOTIFICATION_DESCRIPTOR_UUID);
if (descriptor != null) {
descriptor.setValue(enabled ?
BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE :
BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE);
if (gatt.writeDescriptor(descriptor)) {
// success
}
else {
// failed
}
}
}
It reaches the // success line so it seems to be doing what I want I just
never get the notifications. I know that this characteristic I am trying to
subscribe to has the notification flag set on it. I do that in the iOS
application. Unless something is going wrong there I guess.
How can I debug this to figure out what is going on? Should I get something
in the onDescriptor callback maybe? Where do I look and how do I diagnose?
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Re: [android-developers] Re: Is it possible, that Android kills a service inside an app?
Hi,
You can prove this yourself by creating a test app with a service running
a few tests.
Run the test app start the service on a recent device with Android V4+
then leave the service running go do other stuff for a while.
Sometime during the next few hours you probably find that your service has
been killed by the OS regardless of whether the service was busy or not (
regardless of OOM pressure).
If you want the service to remain running longer than a few hours you will
need to use
'startForeground'
http://developer.android.com/reference/android/app/Service.html#startForeground(int,
android.app.Notification) but even that will not prevent the OS from
killing your service when it thinks it really needs to due to memory
pressure.
Once upon a time before approximately Android V2.2 services were left
running indefinitely weren't eagerly killed by the OS ( even without
having to specify 'startForeground' or 'setForeground' ) provided there was
no memory pressure, but that's no longer the case.
What's officially documented what actually happens on real devices will
vary, so prove to your own satisfaction by testing...
Regards
On Tuesday, December 9, 2014 12:01:12 PM UTC+11, Peter Teoh wrote:
*The Service can still be killed by Android.*
Any proofs?
not any proofs, but just some discussion is possible:
Read this:
http://developer.android.com/reference/android/content/Context.html#startService%28android.content.Intent%29
From above, there is a line:
The only time they should be stopped is if the current foreground
application is using so many resources that the service needs to be killed.
This is talking about the OOM killer.
In traditional Linux OOM is initiated from the kernel. But here in
Android there is a special lowmemorykiller daemon:
https://source.android.com/devices/tech/low-ram.html (looked out for
lowmemorykiller, the name as it is)
Under Android source code:
frameworks/base/services/core/java/com/android/server/am/ActiveServices.java:
final void killServicesLocked(ProcessRecord app, boolean allowRestart)
{
frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java:
mServices.killServicesLocked(app, allowRestart);
You can see the caller and the implementer of the function above. It is
where BIND_ALLOW_OOM_MANAGEMENT parameter are checked, and thus killing the
services is done if necessary.
More info:
http://stackoverflow.com/questions/18972590/the-timing-to-start-android-low-memory-killer
http://forum.xda-developers.com/showthread.php?t=904023
And this is from Linux kernel source code (under drivers/staging/android
means it is still yet to be approved by linux kernel - at that time):
http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/drivers/staging/android/lowmemorykiller.txt
http://www.programering.com/a/MjNzADMwATE.html
http://lwn.net/Articles/511731/
http://varun-anand.com/mem_mgmt.html
Regards,
Peter Teoh
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