效果：
一、首先，设置布局文件 activity_main.xml：
两张图片设为层叠布局，
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.dingding.card_2d.MainActivity"
android:id="@+id/rootView">
<ImageView
android:id="@+id/iv1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/image1" />
<ImageView
android:id="@+id/iv2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/image2"/>
</FrameLayout>
二、MainActivity.java 中
public class MainActivity extends AppCompatActivity {
private ImageView imageView1;
private ImageView imageView2;
//缩放动画，以中间的Y轴为对称轴，X轴进行缩放
private ScaleAnimation sa1 = new ScaleAnimation(1, 0, 1, 1, Animation.RELATIVE_TO_PARENT, 0.5f, Animation.RELATIVE_TO_PARENT, 0.5f);
private ScaleAnimation sa2 = new ScaleAnimation(0, 1, 1, 1, Animation.RELATIVE_TO_PARENT, 0.5f, Animation.RELATIVE_TO_PARENT, 0.5f);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
/*设置监听事件
点击了布局后，设置图1可见或图2不可见*/
findViewById(R.id.rootView).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (imageView1.getVisibility() == View.VISIBLE) {
imageView1.startAnimation(sa1);
} else {
imageView2.startAnimation(sa1);
}
}
});
}
//初始化
private void init() {
imageView1 = (ImageView) findViewById(R.id.iv1);
imageView2 = (ImageView) findViewById(R.id.iv2);
showImage1();
sa1.setDuration(1000);
sa2.setDuration(1000);
//设置动画监听，当缩小的动画结束后，设置下一步的动画
sa1.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
if (imageView1.getVisibility() == View.VISIBLE) {
imageView1.setAnimation(null);
showImage2();
imageView2.startAnimation(sa2);
} else {
imageView2.setAnimation(null);
showImage1();
imageView1.startAnimation(sa2);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
}
/*图1 可见，图2 不可见*/
private void showImage1() {
imageView1.setVisibility(View.VISIBLE);
imageView2.setVisibility(View.INVISIBLE);
}
/*图2 可见，图1 不可见*/
private void showImage2() {
imageView1.setVisibility(View.INVISIBLE);
imageView2.setVisibility(View.VISIBLE);
}
}
