Question

I’ve been raking my brains on this one for a while.

when I’m running my application (opengl game) eveyrthing goes fine but when I touch the screen my application slows down quite seriously (not noticeable on powerful phones like the nexus one, but on the htc magic it gets quite annoying).

I did a trace and found out that the touch events seem to be handled in a different thread and even if it doesn’t take so much processing time I think androids ability to switch between threads is not so good…

What is the best way to handle touch when speed is an issue ?

Currently I’m using :
in the GLSurfaceView

@Override
 public boolean onTouchEvent(MotionEvent event) {
     GameHandler.onTouchEvent(event);
     return true;
 }

Any ideas are welcome

Answer 1

I have a feeling the bug report below may be relevant. Sadly in seems its only going to be fixed in gingerbread.

Bug report

Have just seen that SO prefers details in the answers in case links vanish etc. the above refers to a google accepted bug in Adnroid 2.1 targetted for a fix in the gingerbread release.

Issue 7836: system_server consumes excessive CPU processing touch events