android Animation图片渐变更画 Demo

最终实现效果：

项目目录结构：

 

main.xml

Java代码  

1. <?xml version="1.0" encoding="utf-8"?>  
2. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:layout_width="fill_parent"  
4.     android:layout_height="fill_parent"  
5.     android:orientation="vertical" >  
6.       
7.     <ImageView   
8.         android:id="@+id/iv_animation_logo"  
9.         android:contentDescription="@string/animationContentDescription"  
10.         android:layout_width="fill_parent"  
11.         android:layout_height="fill_parent"  
12.         android:src="@drawable/animation_logo"/>  
13.   
14. </RelativeLayout>  

 

AnimationDemoActivity.java

Java代码  

1. package com.royal.animationDemo;  
2.   
3. import android.app.Activity;  
4. import android.os.Bundle;  
5. import android.view.Window;  
6. import android.view.WindowManager;  
7. import android.view.animation.AlphaAnimation;  
8. import android.view.animation.Animation;  
9. import android.view.animation.Animation.AnimationListener;  
10.   
11. /** 
12.  * 图片渐变更画 
13.  */  
14. public class AnimationDemoActivity extends Activity {  
15.       
16.     public static final int ANIMATION_TIME = 5000;  
17.       
18.     @Override  
19.     public void onCreate(Bundle savedInstanceState) {  
20.         super.onCreate(savedInstanceState);  
21.         this.requestWindowFeature(Window.FEATURE_NO_TITLE);  
22.         // 去掉界面任务条  
23.         this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);  
24.         setContentView(R.layout.main);  
25.           
26.         //图片渐变模糊度始终  
27.         AlphaAnimation aa = new AlphaAnimation(0.1f,1.0f);  
28.         //渐变时间  
29.         aa.setDuration(ANIMATION_TIME);  
30.         //展现图片渐变更画  
31.         this.findViewById(R.id.iv_animation_logo).startAnimation(aa);  
32.           
33.         //渐变过程监听  
34.         aa.setAnimationListener(new AnimationListener() {  
35.               
36.             /** 
37.              * 动画开始时 
38.              */  
39.             @Override  
40.             public void onAnimationStart(Animation animation) {  
41.                 System.out.println("动画开始...");  
42.             }  
43.               
44.             /** 
45.              * 重复动画时 
46.              */  
47.             @Override  
48.             public void onAnimationRepeat(Animation animation) {  
49.                 System.out.println("动画重复...");  
50.             }  
51.               
52.             /** 
53.              * 动画结束时 
54.              */  
55.             @Override  
56.             public void onAnimationEnd(Animation animation) {  
57.                 System.out.println("动画结束...");  
58.             }  
59.         });  
60.     }  
61. }  

 

string.xml

Java代码  

1. <?xml version="1.0" encoding="utf-8"?>  
2. <resources>  
3.   
4.     <string name="app_name">AnimationDemo</string>  
5.     <string name="animationContentDescription">渐变图片动画描述</string>  
6.   
7. </resources>  

 

打印结果：