【原】Image+.XML的方式，实现动画效果

步骤一

创立.XML文件（如下图1所示），并将添加图片

图 1

步骤二

将<selector修改成<animation-list

<animation-list xmlns:android="http://schemas./apk/res/android" android:oneshot="true"><item android:duration="500" android:drawable="@drawable/door4"/>

  <item android:duration="500" android:drawable="@drawable/door3"/>
    <item android:duration="500" android:drawable="@drawable/door2"/>
    <item android:duration="500" android:drawable="@drawable/door1"/>
</animation-list>

步骤三

在activity_main.xml的Image属性注释

//    app:srcCompat="@drawable/door1"

MainActivity文件编程

  ImageView img;
    AnimationDrawable open_door;//两个.XML文件
    AnimationDrawable close_door;

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

        intiview();
    }

    private void intiview() {
        open_door = (AnimationDrawable) getResources().getDrawable(R.drawable.opendoor);
        close_door=(AnimationDrawable) getResources().getDrawable(R.drawable.closedoor);
        img = findViewById(R.id.imageView);
    }


    public void btn_close(View view) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            img.setBackground(close_door);
        }
        close_door.start();

    }

    public void btn_Open(View view) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            img.setBackground(open_door);
        }
        open_door.start();

    }
}