CustomLayoutAnimationsActivity.java 文件源码

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_custom_layout_animations);


    LayoutTransition layoutTransition = new LayoutTransition();

    ObjectAnimator appearingAnim = ObjectAnimator.ofFloat(null, "rotationY", 0f, 90f, 180f, 270f, 359.9999f);
    appearingAnim.addListener(new AnimatorListenerAdapter() {
        public void onAnimationEnd(Animator anim) {
            View view = (View) ((ObjectAnimator) anim).getTarget();
            view.setRotationY(0f);
        }
    });

    layoutTransition.setAnimator(LayoutTransition.APPEARING, appearingAnim);
    layoutTransition.setDuration(LayoutTransition.APPEARING, 2000L);
    layoutTransition.setStartDelay(LayoutTransition.APPEARING, 0);

    gridContainer.setLayoutTransition(layoutTransition);
}