爱站程序员基地Android studio ：实现2D翻转
一、准备
1、需要两张图片
2、了解FrameLayout布局
二、具体代码实现
xml代码：
<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\"android:id=\"@+id/root\"tools:context=\".MainActivity\"><ImageViewandroid:id=\"@+id/a\"android:src=\"@drawable/a\"android:layout_width=\"match_parent\"android:layout_height=\"match_parent\"/><ImageViewandroid:id=\"@+id/b\"android:src=\"@drawable/b\"android:layout_width=\"match_parent\"android:layout_height=\"match_parent\"/></FrameLayout>
java代码：
import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.animation.Animation;import android.view.animation.ScaleAnimation;import android.widget.ImageView;public class MainActivity extends AppCompatActivity {private ImageView imageA;private ImageView imageB;//创建动画1private ScaleAnimation sato0 = new ScaleAnimation( 1,0,1,1,Animation.RELATIVE_TO_PARENT,0.5f,Animation.RELATIVE_TO_PARENT,0.5f );//创建动画2private ScaleAnimation sato1 = new ScaleAnimation( 0,1,1,1,Animation.RELATIVE_TO_PARENT,0.5f,Animation.RELATIVE_TO_PARENT,0.5f );@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate( savedInstanceState );setContentView( R.layout.activity_main );initView();findViewById( R.id.root ).setOnClickListener( new View.OnClickListener() {@Overridepublic void onClick(View v) {// imageA.startAnimation( sato0 );if(imageA.getVisibility() == View.VISIBLE){imageA.startAnimation( sato0 );}else {imageB.startAnimation( sato0 );}}} );}private void showImageA(){imageA.setVisibility( View.VISIBLE );imageB.setVisibility( View.INVISIBLE );}private void showImageB(){imageA.setVisibility( View.INVISIBLE );imageB.setVisibility( View.VISIBLE );}private void initView(){imageA = findViewById( R.id.a );imageB = findViewById( R.id.b );showImageA();sato0.setDuration( 500 );sato1.setDuration( 500 );//添加结束监听sato0.setAnimationListener( new Animation.AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {if(imageA.getVisibility() == View.VISIBLE){imageA.setAnimation( null );showImageB();imageB.setAnimation( sato1 );}else {imageB.setAnimation( null );showImageA();imageA.startAnimation( sato1 );}}@Overridepublic void onAnimationRepeat(Animation animation) {}} );}}
