Question

I’m working on the android live wallpaper applications and need to correctly handle screen orientation changes.

Currently I use onConfigurationChanged for this purpose(in this method I need to change coordinates of my LWP screen elements. I use andengine). Everything works fine on the emulators and my test phones, but some my customers with Samsung Galaxy Note2 (t03g), LG thrill(LGE LG-P925) reports the issues with incorrect application work during the screen orientations change.

I don’t have these phones on hand, but can suppose that the issue is related to onConfigurationChanged not being called.

Is it correct to use onConfigurationChanged method ? Maybe I need to use onSurfaceChanges or something like that ? Could you please suggest me the correct way to solve this issue ?

Alos, I have added android:configChanges="keyboardHidden|orientation" into my AndroidManifest.xml :

<activity
            android:name=".WallpaperSettings"
            android:configChanges="keyboardHidden|orientation"
            android:exported="true" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.PREFERENCE" />
            </intent-filter>
        </activity>

Answer 1

In my live wallpaper, which handles orientation changes, I use the onConfigurationChange() method to check for orientation changes, but I don’t have any direct experience with the 2 phones, though I’ve never gotten any complaints about them. My method looks something along the lines of:

   @Override
   public void onConfigurationChanged(Configuration newConfig) {
       super.onConfigurationChanged(newConfig);

       // Checks the orientation of the screen  
       if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
         rotated = true;
       }
       else {
         rotated = false;
       }
   }

And in the draw() method, I check the rotated boolean. There’s additional checks in the onSurfaceChanged() to correct for resolution changes when the orientation changes.

I don’t have android:configChanges="keyboardHidden|orientation" in my manifest file at all.