Android(安卓)studio 学习4：实现2D翻转

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：

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1    private ScaleAnimation sato0 = new ScaleAnimation( 1,0,1,1,            Animation.RELATIVE_TO_PARENT,0.5f,Animation.RELATIVE_TO_PARENT,0.5f );    //创建动画2    private ScaleAnimation sato1 = 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 );        initView();        findViewById( R.id.root ).setOnClickListener( new View.OnClickListener() {            @Override            public 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() {            @Override            public void onAnimationStart(Animation animation) {            }            @Override            public void onAnimationEnd(Animation animation) {                if(imageA.getVisibility() == View.VISIBLE){                    imageA.setAnimation( null );                    showImageB();                    imageB.setAnimation( sato1 );                }else {                    imageB.setAnimation( null );                    showImageA();                    imageA.startAnimation( sato1 );                }            }            @Override            public void onAnimationRepeat(Animation animation) {            }        } );    }}

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