Android_动画_旋转、平移、缩放、渐变

效果图

需要的文件

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.example.a517_pingyi">      <application         android:allowBackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:roundIcon="@mipmap/ic_launcher_round"         android:supportsRtl="true"         android:theme="@style/Theme.517_pingyi">         <activity             android:name=".DongHuaActivity"             android:exported="true">             <intent-filter>                 <action android:name="android.intent.action.MAIN" />                  <category android:name="android.intent.category.LAUNCHER" />             </intent-filter>         </activity>      </application>  </manifest> 

DongHuaActivity

package com.example.a517_pingyi;  import android.app.Activity; import android.os.Bundle; import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;

import androidx.annotation.Nullable;

public class DongHuaActivity 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 v) { 
        
switch (v.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 translate= AnimationUtils.loadAnimation(this,R.anim.translate_animation);
        ivBean.startAnimation(translate);
        break;

}
    }
}

alpha_animation

<?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 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>

scale_animation

<?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 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>

activity_main

<?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>

小菠萝

上面的到此结束，下面的只是单纯的平移，放到一个项目下

MainActivity

package com.example.a517_pingyi;

import androidx.appcompat.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);

        //步骤一
        //Animation translateAnimation=AnimationUtils.loadAnimation(this,R.anim.pingyi);
//bt.startAnimation(translateAnimation);
        //法二
        Animation translationAnimation=new TranslateAnimation(0,500,0,500);
        translationAnimation.setDuration(3000);//设置持续时间
        translationAnimation.setRepeatCount(10);
        bt.startAnimation(translationAnimation);//按钮播放平移动画
        Animation scal= AnimationUtils.loadAnimation(this,R.anim.scale_animation);//
        bt.startAnimation(scal);//播放缩放动画
    }
}

pingyi

<?xml version ="1.0" encoding ="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">
   <translate android:duration="3000"
    android:startOffset ="1000"
    android:fillBefore = "true"
    android:fillEnabled= "true"
    android:repeatMode= "restart"
    android:repeatCount = "infinite"
    android:interpolator ="@android:anim/linear_interpolator"
    android:fromXDelta="0"
    android:toXDelta="500"
    android:fromYDelta="0"
    android:toYDelta="500" />

</set>

py

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:text="平移动画"
        android:id="@+id/bt"/>

</LinearLayout>

一个小按钮平移效果图