多种动画效果

效果图：

核心代码：

```

public  class  Rotate3dAnimation  extends  Animation { 

     private  final  float  mFromDegrees; 

     private  final  float  mToDegrees; 

     private  final  float  mCenterX; 

     private  final  float  mCenterY; 

     private  final  float  mDepthZ; 

     private  final  boolean  mReverse; 

     private  Camera mCamera; 

   

     public  Rotate3dAnimation( float  fromDegrees,  float  toDegrees, 

             float  centerX,  float  centerY,  float  depthZ,  boolean  reverse) { 

         mFromDegrees = fromDegrees; 

         mToDegrees = toDegrees; 

         mCenterX = centerX; 

         mCenterY = centerY; 

         mDepthZ = depthZ; 

         mReverse = reverse; 

     } 

   

     @Override 

     public  void  initialize( int  width,  int  height,  int  parentWidth,  int  parentHeight) { 

         super .initialize(width, height, parentWidth, parentHeight); 

         mCamera =  new  Camera(); 

     } 

   

     @Override 

     protected  void  applyTransformation( float  interpolatedTime, Transformation t) { 

         final  float  fromDegrees = mFromDegrees; 

         float  degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime); 

   

         final  float  centerX = mCenterX; 

         final  float  centerY = mCenterY; 

         final  Camera camera = mCamera; 

   

         final  Matrix matrix = t.getMatrix(); 

   

         camera.save(); 

         if  (mReverse) { 

             camera.translate( 0 .0f,  0 .0f, mDepthZ * interpolatedTime); 

         }  else  { 

             camera.translate( 0 .0f,  0 .0f, mDepthZ * ( 1 .0f - interpolatedTime)); 

         } 

         camera.rotateY(degrees); 

         camera.getMatrix(matrix); 

         camera.restore(); 

   

         matrix.preTranslate(-centerX, -centerY); 

         matrix.postTranslate(centerX, centerY); 

     }

```

转自：

http://bbs.9tech.cn/topic-365958-1.html