button在底部的多个view切换<实例三触摸和点击实现3D切换>

在这个例子里面我实现了多个view在切换时同时支持手势和点击底部的button，纯UI的东西，除了设计模式，没有什么原理可讲，上代码。

1.MainActivity.java:

package com.isomobile.widgets;

import android.app.ActivityGroup;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends ActivityGroup implements View.OnClickListener {
    private int mCurId = R.id.btn1;
    private MainViewManager mViewManager;
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mViewManager = MainViewManager.getInstance();
        mViewManager.setupViews(this);
    }

    @Override
    public void onClick(View v) {
        final int id = v.getId();
        if (mCurId == id) {
            return;
        }
        mCurId = id;
        mViewManager.setCurBtnPos(id);
        mViewManager.processViews(this);
        mViewManager.onRotateAnimation(mViewManager.getCurBtnIndex(id));
    }
}

2.MainViewManager.java

package com.isomobile.widgets;

import android.app.Activity;
import android.app.ActivityGroup;
import android.content.Context;
import android.content.Intent;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.widget.Button;
import android.widget.RelativeLayout;

public class MainViewManager {
    private static final int FLING_MIN_DISTANCE = 120;

    private static final int FLING_MIN_VELOCITY = 200;
    
    private final static int DISTENCE_X = 240, DISTENCE_Y = 0;

    private final static int ROTATE_ANIMATION_DURATION = 300;
    
    private final static int DEFAULT_FLING_ANGLE = 30;
    
    public final static Class<?>[] sActivityClasses = new Class[]{
            Activity1.class, Activity2.class, Activity3.class, Activity4.class, Activity5.class
    };

    public final static int[] sResIds = new int[]{
            R.id.btn1, R.id.btn2, R.id.btn3, R.id.btn4, R.id.btn5
    };

    public final static String[] sActivityIds = new String[]{
            "Activity1", "Activity2", "Activity3", "Activity4", "Activity5"
    };

    private int mPreBtnPos = 0, mCurBtnPos = 0;

    private RelativeLayout mViewContainer;

    private View mPreView;

    private View[] mCurView = new View[sResIds.length];

    private Button[] mBtns = new Button[sResIds.length];

    private static MainViewManager mInstance = new MainViewManager();

    private MainViewManager() {
    }

    public static MainViewManager getInstance() {
        return mInstance;
    }
   
    public int getCurBtnId(int index) {
        return sResIds[index];
    }
    
    public void setCurBtnPos(int rid) {
        mCurBtnPos = getCurBtnIndex(rid);
    }
    
    public View getCurView(int index) {
        return mCurView[index];
    }
    
    public void setupViews(Context context) {
        mViewContainer = (RelativeLayout) ((Activity) context).findViewById(R.id.container);
        final Button[] btns = mBtns;
        for (int i = 0; i < btns.length; i++) {
            btns[i] = (Button) ((Activity) context).findViewById(sResIds[i]);
            btns[i].setOnClickListener((OnClickListener) context);
        }

        // 第一次启动时，默认跳转到第一个activity
        mCurView[0] = ((ActivityGroup) context).getLocalActivityManager().startActivity(
                sActivityIds[0],
                new Intent(context, sActivityClasses[0]).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
                .getDecorView();
        mViewContainer.addView(mCurView[0]);
        mPreView = mCurView[0];
        mPreBtnPos = 0;
    }

    public int getCurBtnIndex(int rid) {
        final int length = sResIds.length;
        for (int i = 0; i < length; i++) {
            if (rid == sResIds[i]) {
                return i;
            }
        }
        return 0;
    }
    
    public int getCurBtnResid(){
        return sResIds[mCurBtnPos];
    }

    public boolean getMotionState(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY){
        return e1.getX() - e2.getX() > FLING_MIN_DISTANCE
        && Math.abs(velocityX) > FLING_MIN_VELOCITY
        && Math.abs(Math.toDegrees(Math.atan((e1.getY() - e2.getY())
                / (e1.getX() - e2.getX())))) < DEFAULT_FLING_ANGLE;
    }
    
    public void processViews(Context context) {
        mViewContainer.removeAllViews();
        final Intent intent = new Intent(context, sActivityClasses[mCurBtnPos]);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        mCurView[mCurBtnPos] = ((ActivityGroup) context).getLocalActivityManager().startActivity(
                sActivityIds[mCurBtnPos], intent).getDecorView();
    }

    public void onRotateAnimation(int index) {
        if (mPreBtnPos > mCurBtnPos) {
            Rotate3d.rightRotate(mPreView, mCurView[index], DISTENCE_X, DISTENCE_Y,
                    ROTATE_ANIMATION_DURATION, new AnimListener());
        } else {
            Rotate3d.leftRotate(mPreView, mCurView[index], DISTENCE_X, DISTENCE_Y,
                    ROTATE_ANIMATION_DURATION, new AnimListener());
        }

        mPreView = mCurView[index];
        mViewContainer.removeAllViews();
        mViewContainer.addView(mCurView[index]);
        mPreBtnPos = mCurBtnPos;
    }

    private final static class AnimListener implements Animation.AnimationListener {

        public void onAnimationEnd(Animation animation) {
            // 可以设置buttons的背景或者状态(是否可点击等)
        }

        public void onAnimationRepeat(Animation animation) {

        }

        public void onAnimationStart(Animation animation) {
            // 可以设置buttons的背景或者状态(是否可点击等)
        }
    }
}

3.Activity1~Activity5.java:

package com.isomobile.widgets;

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.view.View.OnTouchListener;
import android.widget.LinearLayout;
import android.widget.TextView;

public class Activity1 extends Activity implements OnTouchListener, OnGestureListener {
    private GestureDetector mGestureDetector;

    private MainViewManager mViewManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity1_layout);
        setupViews();
    }

    private void setupViews() {
        mGestureDetector = new GestureDetector(this);
        mViewManager = MainViewManager.getInstance();
        android.util.Log.d("TAG", "aaa");
        final LinearLayout layout1 = (LinearLayout) findViewById(R.id.layout1);
        final TextView tv1 = (TextView) layout1.findViewById(R.id.tv1);
        tv1.setOnTouchListener(this);
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        android.util.Log.d("TAG", "1111");
        mGestureDetector.onTouchEvent(event);
        return true;
    }

    @Override
    public boolean onDown(MotionEvent e) {
        return false;
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        try {
            if (mViewManager.getMotionState(e1, e2, velocityX, velocityY)) {
                mViewManager.setCurBtnPos( mViewManager.getCurBtnId(1));
                if (null == mViewManager.getCurView(1)) {
                    mViewManager.processViews(getParent());
                }
                mViewManager.onRotateAnimation(1);
                return true;
            } else if (mViewManager.getMotionState(e2, e1, velocityX, velocityY)) {
                mViewManager.setCurBtnPos( mViewManager.getCurBtnId(4));
                if (null == mViewManager.getCurView(4)) {
                    mViewManager.processViews(getParent());
                }
                mViewManager.onRotateAnimation(4);
                return true;
            }
        } catch (Exception ex) {
            return true;
        }
        return false;
    }

    @Override
    public void onLongPress(MotionEvent e) {
    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        return false;
    }

    @Override
    public void onShowPress(MotionEvent e) {
    }

    @Override
    public boolean onSingleTapUp(MotionEvent e) {
        return false;
    }

}

整个工程源代码：http://download.csdn.net/detail/androidzhaoxiaogang/3643473