属性动画的使用

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public class SplashActivity extends AppCompatActivity {

    private int width;
    private int height;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_splash2);
        //获取屏幕宽高
        WindowManager wm = (WindowManager) this
                .getSystemService(Context.WINDOW_SERVICE);
        width = wm.getDefaultDisplay().getWidth();
        height = wm.getDefaultDisplay().getHeight();

        //初始化页面
        initViews();
    }

    private void initViews() {
        ImageView imageView=findViewById(R.id.splash_pic);
        //属性动画
        ObjectAnimator translationY = ObjectAnimator.ofFloat(imageView, "translationY", 0, height / 2);
        ObjectAnimator scaleX = ObjectAnimator.ofFloat(imageView, "scaleX", 2, 1);
        ObjectAnimator scaleY = ObjectAnimator.ofFloat(imageView, "scaleY", 2, 1);
        ObjectAnimator alpha = ObjectAnimator.ofFloat(imageView, "alpha", 0, 1);
        ObjectAnimator rotation = ObjectAnimator.ofFloat(imageView, "rotation", 360);

        //添加到动画集合
        AnimatorSet animatorSet = new AnimatorSet();
        animatorSet.playTogether(translationY,scaleX,scaleY,alpha,rotation);

        //设置
        animatorSet.setDuration(3000);
        animatorSet.start();
        animatorSet.addListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animation) {

            }

            @Override
            public void onAnimationEnd(Animator animation) {
                //动画结束的时候，跳转页面
                Intent intent = new Intent(SplashActivity.this, MainActivity.class);
                startActivity(intent);
            }

            @Override
            public void onAnimationCancel(Animator animation) {

            }

            @Override
            public void onAnimationRepeat(Animator animation) {

            }
        });

    }
}

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