ProviderPickerActivity.java 文件源码

@Override
public boolean dispatchTouchEvent(MotionEvent event) {

    // finishWithUserCanceled() if the user tapped outside the picker
    if (MotionEvent.ACTION_DOWN == event.getAction()) {
        Rect visibilityRect = new Rect();
        mPickerContainer.getGlobalVisibleRect(visibilityRect);
        boolean tappedOutsidePicker =
                !visibilityRect.contains((int) event.getRawX(), (int) event.getRawY());
        if (tappedOutsidePicker) {
            finishWithUserCanceled();
        }
    }

    return super.dispatchTouchEvent(event);
}