Call your Engine runOnUpdateThread method:
mEngine.runOnUpdateThread(new DetachChildRunnable())
Question
I try to create wallpaper and use for that AndEngineLiveWallpaper. So, I sometimes catch IndexOutOfBoundsException, when try to detach child sprite from scene. I now, that I must use runOnUpdateThread, but it useful only on BaseGameActivity.
How can I fix that in BaseLiveWallpaperService?
Solution
Call your Engine runOnUpdateThread method:
mEngine.runOnUpdateThread(new DetachChildRunnable())