android 兑现3d旋转

通过继承Animation动画类 ?封装了一个3d旋转的效果代码如下

import android.graphics.Camera;import android.graphics.Matrix;import android.view.animation.Animation;import android.view.animation.Transformation;public class Rotatw3d extends Animation{	private float mFromDegree;	private float mToDegree;	private float mCenterX;	private float mcenterY;	private float mleft;	private float mTop;	private Camera mCamera;	private static final String TAG="Rotate3d";	public Rotatw3d(float mFromDegree, float mToDegree, float mCenterX,			float mcenterY, float mleft, float mTop)	{		this.mFromDegree = mFromDegree;		this.mToDegree = mToDegree;		this.mCenterX = mCenterX;		this.mcenterY = mcenterY;		this.mleft = mleft;		this.mTop = mTop;	}	@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 FromDegree =mFromDegree;		float degrees=FromDegree+(mToDegree-mFromDegree)*interpolatedTime;		final float centerX=mCenterX;		final float centerY=mcenterY;		final Matrix matrix=t.getMatrix();		if(degrees<=-76.0f)		{			degrees=-90.0f;			mCamera.save();			mCamera.rotateY(degrees);			mCamera.getMatrix(matrix);			mCamera.restore();		}		else if(degrees>=76.0f)		{			degrees=90.0f;			mCamera.save();			mCamera.rotateY(degrees);			mCamera.getMatrix(matrix);			mCamera.restore();		}		else 		{			mCamera.save();			mCamera.translate(0, 0, centerX);			mCamera.rotateY(degrees);			mCamera.translate(0, 0, -centerX);			mCamera.getMatrix(matrix);			mCamera.restore();		}		matrix.preTranslate(-centerX, -centerX);		matrix.postTranslate(centerX, centerX);	}}

简单的调用

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 Rotatw3d leftaction=new Rotatw3d(-0, -90, -100, -100, -100, -100);        leftaction.setFillAfter(true);        leftaction.setDuration(5000);        ImageView image=(ImageView)findViewById(R.id.image);        image.startAnimation(leftaction);

?3d的旋转效果是出来了，至于如何精致，你可自由发挥。