android - NavigationDrawer 提示动画(如 Google Currents)

Question

我正在寻找一种方法来提示用户存在抽屉导航。

我喜欢 Google Currents 提示有下一页的方式，它只是在下一页滑动几个像素然后将其删除。

完成这种动画的最佳方法是什么？

Answer 1

这只会在左侧显示一个窄条 - 就像您将手指按住边框一样。不确定这是否是 Google Currents 所做的，但我发现这是一种优雅的提示方式。 Source

protected void peekDrawer() {
    long downTime = SystemClock.uptimeMillis();
    long eventTime = SystemClock.uptimeMillis() + 100;
    MotionEvent motionEvent = MotionEvent.obtain(downTime, eventTime, MotionEvent.ACTION_DOWN, 0, 100, 0);
    m_drawerLayout.dispatchTouchEvent(motionEvent);
    motionEvent.recycle();

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            long downTime = SystemClock.uptimeMillis();
            long eventTime = SystemClock.uptimeMillis() + 100;
            MotionEvent motionEvent = MotionEvent.obtain(downTime, eventTime, MotionEvent.ACTION_UP, 0, 100, 0);
            m_drawerLayout.dispatchTouchEvent(motionEvent);
            motionEvent.recycle();
        }
    }, (long) (1 * DateUtils.SECOND_IN_MILLIS)); //change 1 to however many seconds you wish to display the hint for
}