属性动画

1. AnimatorSet set = new AnimatorSet();
   ObjectAnimator scale = ObjectAnimator.ofFloat(textView,“scaleY”,1,3);
   ObjectAnimator alpha = ObjectAnimator.ofFloat(textView,“alpha”,1, (float) 0.8);
   ObjectAnimator rotate = ObjectAnimator.ofFloat(textView,“rotationX”,0f,360f);
   set.play(scale).with(alpha).with(rotate);
   set.setDuration(2000);
   set.start();
   set.addListener(new Animator.AnimatorListener() {
   @Override
   public void onAnimationStart(Animator animation) {

       }
   
       @Override
       public void onAnimationEnd(Animator animation) {
           startActivity(new Intent(MainActivity.this,Main2Activity.class));
       }
   
       @Override
       public void onAnimationCancel(Animator animation) {
   
       }
   
       @Override
       public void onAnimationRepeat(Animator animation) {
   
       }
   });