If you look at the sample code in the Google documents you'll see that motion events have history. You'll need to use it to get a smooth trace -Blake Programming Android, FTW
On Sep 18, 5:20 am, "[email protected]" <[email protected]> wrote: > I want to let a user smoothly draw elements with his finger and avoid > any lags as follows: > > public boolean onTouchEvent(MotionEvent event) { > float x = event.getX(); > float y = event.getY(); > > switch (event.getAction()) { > case MotionEvent.ACTION_DOWN: > mCanvas.drawBitmap(primitive, x, y, mPaint); > > invalidate(); > break; > case MotionEvent.ACTION_MOVE: > mCanvas.drawBitmap(primitive, x, y, mPaint); > > invalidate(); > break; > case MotionEvent.ACTION_UP: > mCanvas.drawBitmap(primitive, x, y, mPaint); > > invalidate(); > break; > } > return true; > } > } > > Using android SDK I find onTouchEvent is not called for every motion > event. This results in drawing of a bitmap only at the points when the > motion event is detected. > > I can do this very easily using iPhone SDK . Can anyone confirm if > this is a limitation in Android or if there is a way we can increase > the rate of motion events? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
