Android Animation Tween动画效果的使用

原文地址::http://dev.firnow.com/course/3_program/java/javajs/20100719/459467.html

 

 

 

Animation Tween动画可以通过java代码实现，也可以通过xml布局来实现

1.通过java代码实现：

显示代码打印

001 package com.Aina.Android; 

002   

003 import android.content.Context; 

004 import android.graphics.Bitmap; 

005 import android.graphics.Canvas; 

006 import android.graphics.Paint; 

007 import android.graphics.drawable.BitmapDrawable; 

008 import android.view.KeyEvent; 

009 import android.view.View; 

010 import android.view.animation.AlphaAnimation; 

011 import android.view.animation.Animation; 

012 import android.view.animation.RotateAnimation; 

013 import android.view.animation.ScaleAnimation; 

014 import android.view.animation.TranslateAnimation; 

015   

016 /** 

017  * com.Aina.Android Pro_AnimationTween 

018  *  

019  * @author Aina.huang E-mail: [email protected] 

020  * @version 创建时间：2010 Jun 17, 2010 5:15:36 PM 类说明 

021  */

022 public class GameView extends View { 

023   

024     private Paint mPaint = null; 

025     private Animation mAlphaAnimation = null; 

026     private Animation mScaleAnimation = null; 

027     private Animation mTranslateAnimation = null; 

028     private Animation mRotateAnimation = null; 

029     private Bitmap mBitmap = null; 

030   

031     public GameView(Context context) { 

032         super(context); 

033         mBitmap = ((BitmapDrawable) this.getResources().getDrawable( 

034                 R.drawable.img)).getBitmap(); 

035     } 

036   

037     @Override

038     protected void onDraw(Canvas canvas) { 

039         super.onDraw(canvas); 

040         mPaint = new Paint(); 

041         mPaint.setAntiAlias(true); 

042         canvas.drawBitmap(mBitmap, 0, 0, mPaint); 

043     } 

044   

045     public boolean onKeyDown(int keyCode, KeyEvent event) { 

046         switch (keyCode) { 

047         case KeyEvent.KEYCODE_DPAD_UP: 

048             mAlphaAnimation = new AlphaAnimation(0.1f, 1.0f);// 透明度 

049             mAlphaAnimation.setDuration(3000); 

050             this.startAnimation(mAlphaAnimation); 

051             break; 

052         case KeyEvent.KEYCODE_DPAD_DOWN: 

053             mScaleAnimation = new ScaleAnimation(0.0f, 1.0f, 0.0f, 

054                     1.0f,// 整个屏幕就0.0到1.0的大小//缩放 

055                     Animation.RELATIVE_TO_SELF, 0.5f, 

056                     Animation.RELATIVE_TO_SELF, 0.0f); 

057             mScaleAnimation.setDuration(3000); 

058             this.startAnimation(mScaleAnimation); 

059             break; 

060         case KeyEvent.KEYCODE_DPAD_LEFT: 

061             mTranslateAnimation = new TranslateAnimation(0, 100, 0, 100);// 移动 

062             mTranslateAnimation.setDuration(2000); 

063             this.startAnimation(mTranslateAnimation); 

064             break; 

065         case KeyEvent.KEYCODE_DPAD_RIGHT: 

066             mRotateAnimation = new RotateAnimation(0.0f, 360.0f,//旋转 

067                     Animation.RELATIVE_TO_SELF, 0.5f, 

068                     Animation.RELATIVE_TO_SELF, 0.5f); 

 069             mRotateAnimation.setDuration(3000); 

070             this.startAnimation(mRotateAnimation); 

071             break; 

072         default: 

073             break; 

074         } 

075         return super.onKeyDown(keyCode, event); 

076     } 

077 } 

078   

079   

080   

081   

082   

083 package com.Aina.Android; 

084   

085 import android.app.Activity; 

086 import android.os.Bundle; 

087 import android.view.KeyEvent; 

088   

089 public class Test_AnimationTween extends Activity { 

090     /** Called when the activity is first created. */

091     private GameView gv = null; 

092     @Override

093     public void onCreate(Bundle savedInstanceState) { 

094         super.onCreate(savedInstanceState); 

095         gv = new GameView(this); 

096         this.setContentView(gv); 

097     } 

098     @Override

099     public boolean onKeyDown(int keyCode, KeyEvent event) { 

100         return gv.onKeyDown(keyCode, event); 

101     } 

102       

103 }

2.通过xml布局实现：

显示代码打印

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

02 <set xmlns:android="http://schemas.android.com/apk/res/android"> 

03     <alpha android:fromAlpha="0.1" android:toAlpha="1.0"

04         android:duration="3000"> 

05     </alpha> 

06 </set> 

07   

08   

09   

10   

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

12 <set xmlns:android="http://schemas.android.com/apk/res/android"> 

13     <scale android:fromXScale="0.0" android:toXScale="1.0"

14         android:fromYScale="0.0" android:toYScale="1.0" android:pivotX="50%"

15         android:pivotY="50%" android:fillAfter="false"

16         android:duration="3000"> 

17     </scale> 

18 </set> 

19   

20   

21   

22   

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

24 <set xmlns:android="http://schemas.android.com/apk/res/android"> 

25     <translate android:fromXDelta="0" android:toXDelta="100"

26         android:fromYDelta="0" android:toYDelta="100" android:duration="3000"> 

27     </translate> 

28 </set> 

29   

30   

31   

32   

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

34 <set xmlns:android="http://schemas.android.com/apk/res/android"> 

35     <rotate

36         android:interpolator="@android:anim/accelerate_decelerate_interpolator"

37         android:fromDegrees="0" android:toDegrees="+360" android:pivotX="50%"

38         android:pivotY="50%" android:duration="3000"> 

39     </rotate> 

40 </set>

显示代码打印

01 package com.Aina.Android; 

02   

03 import android.content.Context; 

04 import android.graphics.Bitmap; 

05 import android.graphics.Canvas; 

06 import android.graphics.Paint; 

07 import android.graphics.drawable.BitmapDrawable; 

08 import android.view.KeyEvent; 

09 import android.view.View; 

10 import android.view.animation.AlphaAnimation; 

11 import android.view.animation.Animation; 

12 import android.view.animation.AnimationUtils; 

13 import android.view.animation.RotateAnimation; 

14 import android.view.animation.ScaleAnimation; 

15 import android.view.animation.TranslateAnimation; 

16   

17 /** 

18  * com.Aina.Android Pro_AnimationTween 

19  *  

20  * @author Aina.huang E-mail: [email protected] 

21  * @version 创建时间：2010 Jun 17, 2010 5:15:36 PM 类说明 

22  */

23 public class GameView extends View { 

24   

25     private Paint mPaint = null; 

26     private Animation mAlphaAnimation = null; 

27     private Animation mScaleAnimation = null; 

28     private Animation mTranslateAnimation = null; 

29     private Animation mRotateAnimation = null; 

30     private Bitmap mBitmap = null; 

31     private Context mContext = null; 

32     public GameView(Context context) { 

33         super(context); 

34         mContext = context; 

35         mBitmap = ((BitmapDrawable) this.getResources().getDrawable( 

36                 R.drawable.img)).getBitmap(); 

37     } 

38   

39     @Override

40     protected void onDraw(Canvas canvas) { 

41         super.onDraw(canvas); 

42         mPaint = new Paint(); 

43         mPaint.setAntiAlias(true); 

44         canvas.drawBitmap(mBitmap, 0, 0, mPaint); 

45     } 

46   

47     public boolean onKeyDown(int keyCode, KeyEvent event) { 

48         switch (keyCode) { 

49         case KeyEvent.KEYCODE_DPAD_UP: 

50 //          mAlphaAnimation = new AlphaAnimation(0.1f, 1.0f);// 透明度 

51 //          mAlphaAnimation.setDuration(3000); 

52             mAlphaAnimation = AnimationUtils.loadAnimation(mContext, R.anim.alpha); 

53             this.startAnimation(mAlphaAnimation); 

54             break; 

55         case KeyEvent.KEYCODE_DPAD_DOWN: 

56 //          mScaleAnimation = new ScaleAnimation(0.0f, 1.0f, 0.0f, 

57 //                  1.0f,// 整个屏幕就0.0到1.0的大小//缩放 

58 //                  Animation.RELATIVE_TO_SELF, 0.5f, 

59 //                  Animation.RELATIVE_TO_SELF, 0.0f); 

60 //          mScaleAnimation.setDuration(3000); 

61             mScaleAnimation = AnimationUtils.loadAnimation(mContext, R.anim.scale); 

62             this.startAnimation(mScaleAnimation); 

63             break; 

64         case KeyEvent.KEYCODE_DPAD_LEFT: 

65 //          mTranslateAnimation = new TranslateAnimation(0, 100, 0, 100);// 移动 

66 //          mTranslateAnimation.setDuration(2000); 

67             mTranslateAnimation = AnimationUtils.loadAnimation(mContext, R.anim.translate); 

68             this.startAnimation(mTranslateAnimation); 

69             break; 

70         case KeyEvent.KEYCODE_DPAD_RIGHT: 

71 //          mRotateAnimation = new RotateAnimation(0.0f, 360.0f,//旋转 

72 //                  Animation.RELATIVE_TO_SELF, 0.5f, 

73 //                  Animation.RELATIVE_TO_SELF, 0.5f);           

74 //          mRotateAnimation.setDuration(3000); 

75             mRotateAnimation = AnimationUtils.loadAnimation(mContext, R.anim.rotate); 

76             this.startAnimation(mRotateAnimation); 

77             break; 

78         default: 

79             break; 

80         } 

81         return super.onKeyDown(keyCode, event); 

82     } 

83

}

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