图片3D浏览的Demo
这是个图片浏览的例子;http://dl.iteye.com/upload/attachment/283334/e6b78ed5-8326-326c-8fe5-bcd1857db18f.png
刚在群里一个家伙给提供的思路:
1.Activity类Rotate.java文件
package cn.com;import android.app.Activity;import android.os.Bundle;import android.view.GestureDetector;import android.view.MotionEvent;import android.widget.ImageView;public class Rotate extends Activity {GestureDetector gesture;int mCenterX = 160;int mCenterY = 0;ImageView mImageView1;ImageView mImageView2;/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);FlingGuest sg = new FlingGuest(this);gesture = new GestureDetector(sg);mImageView1 = (ImageView) findViewById(R.id.image1);mImageView2 = (ImageView) findViewById(R.id.image2);}public void leftMoveHandle() {Rotate3d leftAnimation = new Rotate3d(0, -90, 0, 0, mCenterX, mCenterY);Rotate3d rightAnimation = new Rotate3d(90, 0, 0.0f, 0.0f, mCenterX,mCenterY);leftAnimation.setFillAfter(true);leftAnimation.setDuration(1000);rightAnimation.setFillAfter(true);rightAnimation.setDuration(1000);mImageView1.startAnimation(leftAnimation);mImageView2.startAnimation(rightAnimation);}public void rightMoveHandle() {Rotate3d leftAnimation = new Rotate3d(0, 90, 0, 0, mCenterX, mCenterY);Rotate3d rightAnimation = new Rotate3d(-90, 0, 0.0f, 0.0f, mCenterX,mCenterY);leftAnimation.setFillAfter(true);leftAnimation.setDuration(1000);rightAnimation.setFillAfter(true);rightAnimation.setDuration(1000);mImageView1.startAnimation(rightAnimation);mImageView2.startAnimation(leftAnimation);}// called automatically, any screen action will Triggered itpublic boolean onTouchEvent(MotionEvent me) {return gesture.onTouchEvent(me);}}
2.手势监听类
package cn.com;import android.app.Activity;import android.util.Log;import android.view.MotionEvent;import android.view.GestureDetector.OnGestureListener;public class FlingGuest implements OnGestureListener {Activity activity;int VALUE_DISTANCE = 100;int VALUE_SPEED = 20;public FlingGuest(Activity a) {activity = a;}// 用户轻触触摸屏，由1个MotionEvent ACTION_DOWN触发public boolean onDown(MotionEvent e) {Log.d("TAG", "[+++++++++++]");return true;}// e1, the begin of ACTION_DOWN MotionEvent// e2, the end of ACTION_DOWN MotionEvent// velocityX, the motion speed in X// velocityY：the motion speed in y// 用户按下触摸屏、快速移动后松开,由1个MotionEvent ACTION_DOWN,// 多个ACTION_MOVE, 1个ACTION_UP触发// e1：第1个ACTION_DOWN MotionEvent// e2：最后一个ACTION_MOVE MotionEvent// velocityX：X轴上的移动速度，像素/秒// velocityY：Y轴上的移动速度，像素/秒// 触发条件 ：// X轴的坐标位移大于VALUE_DISTANCE，且移动速度大于VALUE_SPEED个像素/秒public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {if ((e1.getX() - e2.getX() > VALUE_DISTANCE)&& Math.abs(velocityX) > VALUE_SPEED) {Log.d("TAG", "[+++++++++++]");((Rotate)activity).leftMoveHandle();} else if ((e2.getX() - e1.getX() > VALUE_DISTANCE)&& Math.abs(velocityX) > VALUE_SPEED) {Log.d("TAG", "[+++++++++++]");((Rotate)activity).rightMoveHandle();}return true;}// 用户长按触摸屏，由多个MotionEvent ACTION_DOWN触发public void onLongPress(MotionEvent e) {Log.d("TAG", "[+++++++++++]");}// 用户按下触摸屏，并拖动，由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE触发public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,float distanceY) {Log.d("TAG", "[+++++++++++]");return true;}// 用户轻触触摸屏，尚未松开或拖动，由一个1个MotionEvent ACTION_DOWN触发// 注意和onDown()的区别，强调的是没有松开或者拖动的状态public void onShowPress(MotionEvent e) {Log.d("TAG", "[+++++++++++]");}// 用户（轻触触摸屏后）松开，由一个MotionEvent ACTION_UP触发public boolean onSingleTapUp(MotionEvent e) {Log.d("TAG", "[+++++++++++]");return true;}}
3.Rotate3d.java动画辅助类
package cn.com;import android.graphics.Camera;import android.graphics.Matrix;import android.view.animation.Animation;import android.view.animation.Transformation;public class Rotate3d 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 Rotate3d(float fromDegree, float toDegree, float left, float top,float centerX, float centerY) {this.mFromDegree = fromDegree;this.mToDegree = toDegree;this.mLeft = left;this.mTop = top;this.mCenterX = centerX;this.mCenterY = centerY;}@Overridepublic void initialize(int width, int height, int parentWidth,int parentHeight) {super.initialize(width, height, parentWidth, parentHeight);mCamera = new Camera();}@Overrideprotected 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, -centerY);matrix.postTranslate(centerX, centerY);}}
4.main.xml
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="wrap_content"><ImageView android:id="@+id/image2" android:layout_width="fill_parent"android:layout_height="fill_parent" android:background="@drawable/two" /><ImageView android:id="@+id/image1" android:layout_width="fill_parent"android:layout_height="fill_parent" android:background="@drawable/one" /></RelativeLayout>
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