animation 之xml控制

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原创：kylin_zeng  http://blog.chinaunix.net/uid/23795897.html在此感谢mars 老师的帮助。转载请注明原创出处，尊重他人的劳动成果。

二、第二种使用：
 
1、在res文件夹厦门新建一个anim的文件夹；


2、创建xml文件，并首先要加入set标签，如下：
  <set xmlns:android="http://schemas.android.com/apk/res/android"
      android:interpolator="@android:anim/accelerate_interpolator">
  </set>


3、在该标签当中加入rotate，alpha,scale或者translate标签。


4、在代码中使用AnimationUtils当中转载xml 文件，并生产Animation对象。


例如：
1、在res下面建立一个anim文件夹。

2、里面创建了四个xml文件，alpha.xml,

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1. <?xml version="1.0" encoding="utf-8"?>
   
2. <set xmlns:android="http://schemas.android.com/apk/res/android"
   
3.     android:interpolator="@android:anim/accelerate_interpolator">
   
4. 
   
5.         
   
6.     <alpha
   
7.         android:fromAlpha="1.0"
   
8.         android:toAlpha="0.0"
   
9.         android:startOffset="500"
   
10.         android:duration="500" />
    
11. 
    
12. </set>

rotate.xml,

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1. <?xml version="1.0" encoding="utf-8"?>
   
2. <set xmlns:android="http://schemas.android.com/apk/res/android"
   
3.     android:interpolator="@android:anim/accelerate_interpolator">
   
4. 
   
5.     <rotate android:fromDegrees="0"
   
6.         android:toDegrees="360"
   
7.         android:pivotX="50%"            
8.         //这里有三种表示方法：50  ：是绝对坐标，表示屏幕上真正的50，对应代码控制中的toplant,
   
9.         //                  50% : 是相对坐标，表示相对自身控件的50%，即控件的中心点。
10.         //                  50%p: 是相对于父控件，表示父控件的50%位置。
11.         android:pivotY="50%"
    
12.         android:duration="5000" />
    
13. </set>

scale.xml,

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1. <?xml version="1.0" encoding="utf-8"?>
   
2. <set xmlns:android="http://schemas.android.com/apk/res/android"
   
3.     android:interpolator="@android:anim/accelerate_interpolator">
   
4. 
   
5.     <scale android:fromXScale="1.0"
   
6.         android:toXScale="0.0"
   
7.         android:fromYScale="1.0"
   
8.         android:toYScale="0.0"
   
9.         android:pivotX="50%"
   
10.         android:pivotY="50%"
    
11.         android:duration="2000" />
    
12. 
    
13. </set>

translate.xml

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1. <?xml version="1.0" encoding="utf-8"?>
   
2. <set xmlns:android="http://schemas.android.com/apk/res/android"
   
3.     android:interpolator="@android:anim/accelerate_interpolator">
   
4. 
   
5.     <translate
   
6.         android:fromXDelta="50%"
   
7.         android:toXDelta="100%"
   
8.         android:fromYDelta="0%"
   
9.         android:toYDelta="100%"
   
10.         android:duration="2000" />
    
11. 
    
12. </set>

4、调用：

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1. package mars.animations02;
   
2. 
   
3. import android.app.Activity;
   
4. import android.os.Bundle;
   
5. import android.view.View;
   
6. import android.view.View.OnClickListener;
   
7. import android.view.animation.AlphaAnimation;
   
8. import android.view.animation.Animation;
   
9. import android.view.animation.AnimationSet;
   
10. import android.view.animation.AnimationUtils;
    
11. import android.view.animation.RotateAnimation;
    
12. import android.view.animation.ScaleAnimation;
    
13. import android.view.animation.TranslateAnimation;
    
14. import android.widget.Button;
    
15. import android.widget.ImageView;
    
16. 
    
17. public class MainActivity extends Activity {
    
18.     /** Called when the activity is first created. */
    
19.     private ImageView imageView = null;
    
20.     private Button rotateButton = null;
    
21.     private Button scaleButton = null;
    
22.     private Button alphaButton = null;
    
23.     private Button translateButton = null;
    
24. 
    
25.     @Override
    
26.     public void onCreate(Bundle savedInstanceState) {
    
27.         super.onCreate(savedInstanceState);
    
28.         setContentView(R.layout.main);
    
29.         imageView = (ImageView) findViewById(R.id.imageViewId);
    
30. 
    
31.         rotateButton = (Button) findViewById(R.id.rotateButtonId);
    
32.         rotateButton.setOnClickListener(new RotateButtonListener());
    
33. 
    
34.         scaleButton = (Button) findViewById(R.id.scaleButtonId);
    
35.         scaleButton.setOnClickListener(new ScaleButtonListener());
    
36. 
    
37.         alphaButton = (Button) findViewById(R.id.alphaButtonId);
    
38.         alphaButton.setOnClickListener(new AlphaButtonListener());
    
39. 
    
40.         translateButton = (Button) findViewById(R.id.translateButtonId);
    
41.         translateButton.setOnClickListener(new TranslateButtonListener());
    
42.     }
    
43. 
    
44.     private class RotateButtonListener implements OnClickListener {
    
45. 
    
46.         @Override
    
47.         public void onClick(View view) {
    
48.             Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.rotate);
    
49.             imageView.startAnimation(animation);
    
50.         }
    
51.     }
    
52. 
    
53.     private class ScaleButtonListener implements OnClickListener {
    
54. 
    
55.         @Override
    
56.         public void onClick(View view) {
    
57.             Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.sacle);
    
58.             imageView.startAnimation(animation);
    
59.         }
    
60. 
    
61.     }
    
62. 
    
63.     private class AlphaButtonListener implements OnClickListener {
    
64. 
    
65.         @Override
    
66.         public void onClick(View view) {
    
67.             //使用AnimationUtils装载动画设置文件
    
68.             Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.alpha);
    
69.             imageView.startAnimation(animation);
    
70.         }
    
71. 
    
72.     }
    
73. 
    
74.     private class TranslateButtonListener implements OnClickListener {
    
75. 
    
76.         @Override
    
77.         public void onClick(View view) {
    
78.             Animation animation = (Animation) AnimationUtils.loadAnimation(MainActivity.this, R.anim.translate);
    
79.             imageView.startAnimation(animation);
    
80.         }
    
81. 
    
82.     }
    
83. }

02_09.zip