When I print out the before/after times around the 3 statements, it takes 1 second. Log.v(TAG, new java.util.Date().toString());
VERBOSE/BEFORE(768): Fri Apr 04 12:35:23 GMT 2008 VERBOSE/AFTER(768): Fri Apr 04 12:35:24 GMT 2008 However it takes 3.5 seconds to see the button in the layout. So the delay is mainly in displaying it. Calling layout.invalidate() didn't make a difference. No, it is a small image: 863 bytes The second time, I have already removed it from the layout, and am calling getImageResource again, so I am surprised it is much quicker. thanks, Anil On Apr 4, 1:33 am, hackbod <[EMAIL PROTECTED]> wrote: > The most likely reason for it to be slow is that it is a huge image > you are loading. You could also try making it a PNG -- since pretty > much all of the UI is PNG images, those are loaded into each app as > they start, so the performance of that is clearly acceptable -- though > as far as I know JPEG loading is quite reasonable as well. > > As for it taking less time the second time, well the resource is > already loaded from the first time so it won't load it again. > > On Apr 3, 6:53 pm, Anil <[EMAIL PROTECTED]> wrote: > > > Any way to speed it up? for example if there is a way that the image > > can be read in and stored in an image/icon class and if buttons can > > share that image/icon. Also do you have any idea why it is quicker on > > subsequent adds? > > > On Apr 3, 8:29 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote: > > > > It looks like its setImageResource() which is taking a lot of time. > > > > On Thu, Apr 3, 2008 at 6:28 PM, Anil <[EMAIL PROTECTED]> wrote: > > > > > When user clicks a button, these 3 lines are executed: > > > > > button = new ImageButton(context); > > > > button .setImageResource(R.drawable.buttonJPG); > > > > layout.addView(button, new > > > > LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, > > > > LayoutParams.WRAP_CONTENT)); > > > > > I observe that during the first add, it takes about 3.5 seconds. > > > > Subsequent adds are much quicker at about 0.5 sec. > > > > On actual devices, it will be many times slower. > > > > thanks, > > > > Anil > > > > > On Apr 3, 6:29 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote: > > > > > I highly doubt this number since during a scroll, ListView basically > > > > > adds and removes Views all the time. It certainly doesn't take 3 > > > > > seconds. There must be a bottleneck somewhere in your application. > > > > > > On Thu, Apr 3, 2008 at 2:50 PM, Anil <[EMAIL PROTECTED]> wrote: > > > > > > > I have to say this - adding a button dynamically to a layout is > > > > > > *extremely* slow. > > > > > > It takes about 3 seconds for the button to be added! > > > > > > > On Apr 3, 3:40 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote: > > > > > > > Hi, > > > > > > > > You cannot do this. If you try to put the same View in different > > > > > > > layouts, an exception will be thrown anyway. > > > > > > > > On Thu, Apr 3, 2008 at 1:34 PM, Anil <[EMAIL PROTECTED]> wrote: > > > > > > > > > I need to use the same buttons in several list items - each > > > > of which > > > > > > > > is a nested layout. > > > > > > > > Instead of creating a new button each time, to save time and > > > > space, I > > > > > > > > am going to reuse the same button, adding it to each layout. > > > > Of > > > > > > > > course, each OnClickListener will have to figure out which > > > > list item > > > > > > > > was clicked. > > > > > > > > Are there any unintended or harmful side effects to this? > > > > > > > > thanks, > > > > > > > > Anil > > > > > > > > -- > > > > > > > Romain Guywww.curious-creature.org > > > > > > -- > > > > > Romain Guywww.curious-creature.org > > > > -- > > > Romain Guywww.curious-creature.org --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] Announcing the new M5 SDK! http://android-developers.blogspot.com/2008/02/android-sdk-m5-rc14-now-available.html For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
