DetailsTaskFragment.java 文件源码

private void dropPinEffect(Marker marker) {
    final Handler handler = new Handler();
    final long start = SystemClock.uptimeMillis();
    final long duration = 1500;
    final Interpolator interpolator = new BounceInterpolator();
    handler.post(new Runnable() {
        @Override
        public void run() {
            long elapsed = SystemClock.uptimeMillis() - start;
            float t = Math.max(1 - interpolator.getInterpolation((float) elapsed / duration), 0);
            marker.setAnchor(0.5f, 1.0f + 14 * t);
            if (t > 0.0) {
                handler.postDelayed(this, 15);
            } else {
                marker.showInfoWindow();
            }
        }
    });
}