DebugAnimationListener.java

/* Performance logging for animations.

final DebugAnimationListener debug = new DebugAnimationListener();
animator.addUpdateListener(debug);
animator.addListener(debug);

*/

class DebugAnimationListener implements ValueAnimator.AnimatorUpdateListener, Animator.AnimatorListener {

		private static final String TAG = "DebugAnimationListener";

		long mFrameCount;
		long mStart;

		@Override
		public void onAnimationStart(Animator animation) {
			mFrameCount = 0;
			mStart = AnimationUtils.currentAnimationTimeMillis();
		}

		@Override
		public void onAnimationEnd(Animator animation) {
			if (mStart != 0) {
				final long elapsed = AnimationUtils.currentAnimationTimeMillis() - mStart;
				final float fps = (mFrameCount * 1000.0f) / elapsed;
				MyLog.i(TAG, "%d frames over %d ms, %.02f fps", mFrameCount, elapsed, fps);
			}
		}

		@Override
		public void onAnimationCancel(Animator animation) {
			mStart = 0;
		}

		@Override
		public void onAnimationRepeat(Animator animation) {
			onAnimationStart(animation);
		}

		@Override
		public void onAnimationUpdate(ValueAnimator animation) {
			++mFrameCount;
		}
	}