Android动画 补间动画（平移 渐变 缩放 旋转效果的实现）

效果图

scale_animatio.xml（缩放）

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <scale         android:fromXScale="1.0"         android:fromYScale="1.0"         android:toXScale="0.5"         android:toYScale="0.5"         android:pivotX="50%"         android:pivotY="50%"         android:repeatMode="reverse"         android:repeatCount="infinite"         android:duration="3000"/> </set>   

translate_animation.xml（平移）

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <translate         android:fromXDelta="0.0"         android:fromYDelta="0.0"         android:toXDelta="100"         android:toYDelta="0.0"         android:repeatCount="infinite"         android:repeatMode="reverse"         android:duration="4000"/> </set>  

alpha_animation.xml（渐变）

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <alpha         android:interpolator="@android:anim/linear_interpolator"         android:repeatMode="reverse"         android:repeatCount="infinite"         android:duration="1000"         android:fromAlpha="1.0"         android:toAlpha="0.0"/> </set>  

rotate_animation.xml(旋转)

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <rotate         android:fromDegrees="0"         android:toDegrees="360"         android:pivotX="50%"         android:pivotY="50%"         android:repeatMode="reverse"         android:repeatCount="infinite"         android:duration="1000"/> </set>   

DonghuaActivity.java

package com.example.zhuhaiying.pingyi;   import android.app.Activity; import android.os.Bundle; import android.support.annotation.Nullable; import android.view.View; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.widget.Button; import android.widget.ImageView;  public class DonhuaActivity extends Activity implements View.OnClickListener
{ 
       
    Button bt1,bt2,bt3,bt4;
    ImageView ivBean;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) { 
       
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bt1=(Button)findViewById(R.id.btn_one);
        bt2=(Button)findViewById(R.id.btn_two);
        bt3=(Button)findViewById(R.id.btn_three);
        bt4=(Button)findViewById(R.id.btn_four);
        ivBean=(ImageView)findViewById(R.id.iv_bean);
        bt1.setOnClickListener(this);
        bt2.setOnClickListener(this);
        bt3.setOnClickListener(this);
        bt4.setOnClickListener(this);
    }

    @Override
    public void onClick(View view) { 
       
        switch (view.getId()){ 
       
            case R.id.btn_one:
                Animation alpha= AnimationUtils.loadAnimation(this,R.anim.alpha_animation);
                ivBean.startAnimation(alpha);
                break;
            case R.id.btn_two:
                Animation rotate= AnimationUtils.loadAnimation(this,R.anim.rotate_animation);
                ivBean.startAnimation(rotate);
                break;
            case R.id.btn_three:
                Animation scale= AnimationUtils.loadAnimation(this,R.anim.scale_animation);
                ivBean.startAnimation(scale);
                break;
            case R.id.btn_four:
                Animation tranalate= AnimationUtils.loadAnimation(this,R.anim.translate_animation);
                ivBean.startAnimation(tranalate);
                break;

        }
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="5dp">
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/iv_tween"
        android:layout_centerInParent="true"
        android:id="@+id/iv_bean"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true">
        <Button
            android:id="@+id/btn_one"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="渐变"/>
        <Button
            android:id="@+id/btn_two"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="旋转"/>
        <Button
            android:id="@+id/btn_three"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="缩放"/>
        <Button
            android:id="@+id/btn_four"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="移动" />
    </LinearLayout>
</RelativeLayout>

MainActivity.java

package com.example.   ;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.TranslateAnimation;
import android.widget.Button;

public class MainActivity extends AppCompatActivity { 
       

    @Override
    protected void onCreate(Bundle savedInstanceState) { 
       
        super.onCreate(savedInstanceState);
        setContentView(R.layout.py);
        Button bt=(Button)findViewById(R.id.bt);
        Animation translateAnimation=new TranslateAnimation(0,500,0,500);
//新建一个平移动画对象实例
        translateAnimation.setDuration(3000);//设置持续时间
        translateAnimation.setRepeatCount(10);
        bt.startAnimation(translateAnimation);//按钮播放平移动画
        Animation scal= AnimationUtils.loadAnimation(this,R.anim.scale_animation);//获取缩放动画
        bt.startAnimation(scal);//播放缩放动画
    }
}