效果圖：

1499242181976.gif

1499242441467.gif

主要原理：就是利用nineold提供的動畫幫助類，做一個放大效果，子線程或者hanlder發消息延時兩秒，然后再執行放大效果對圖片
當然需要添加依賴

compile 'com.nineoldandroids:library:2.4.0'

布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/splash"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:adjustViewBounds="true"
        android:scaleType="centerCrop"
        android:src="@drawable/default_splash"/>

</RelativeLayout>

代碼：

protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.splash);

        splash = (ImageView) findViewById(R.id.splash);

        //方法一：開啟一個子線程執行跳轉任務

        new Thread(){
            @Override
            public void run() {

                super.run();
                try {

                    Thread.sleep(2000);
                    Splash.this.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            animateImage();
                        }
                    });
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }.start();




    }
    //放大圖片
    public void animateImage() {

        ObjectAnimator animatorX = ObjectAnimator.ofFloat(splash, "scaleX", 1f,
                1.2f);
        ObjectAnimator animatorY = ObjectAnimator.ofFloat(splash, "scaleY", 1f,
                1.2f);

        AnimatorSet set = new AnimatorSet();
        set.setDuration(2000).play(animatorX).with(animatorY);
        set.start();

        set.addListener(new AnimatorListenerAdapter() {

            @Override
            public void onAnimationEnd(Animator animation) {

                startActivity(new Intent(Splash.this, MainActivity.class));
                Splash.this.finish();
                overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
            }
        });
    }

ok 本文結束，一個簡單有趣的splash