主要代码:(有注释)

package com.example.checkboxtest;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.os.Handler;import android.os.Message;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.Toast;public class MyView extends ViewGroup {    View leftView = null;    View rightView = null;    public MyView(Context context, AttributeSet attrs) {        super(context, attrs);        View view = new View(context, attrs);        view.setBackgroundColor(Color.BLACK);        this.addView(view, 0);    }    /**     * 测量     */    @SuppressLint("DrawAllocation")    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        if (getChildCount() != 2) {            try {                // 自定义Exception                throw new Exception() {                    @Override                    public void printStackTrace() {                        System.err.println("MyView中只能存在一个View");                        super.printStackTrace();                    }                };            } catch (Exception e) {                e.printStackTrace();            }        }        leftView = getChildAt(0);        // 设置leftview的高和宽        leftView.measure(widthMeasureSpec, heightMeasureSpec);        rightView = getChildAt(1);        // 设置rightview的高和宽        rightView.measure(widthMeasureSpec, heightMeasureSpec);        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    /**     * 布局     */    @SuppressLint("NewApi")    @Override    protected void onLayout(boolean changed, int l, int t, int r, int b) {        System.out.println(l + "," + t + "," + r + "," + b);        if (leftView != null & rightView != null) {            // 设置leftview的位置,在屏幕右侧(初始不可见)            leftView.layout(-r, 0, 0, b);            // 设置rightView的位置,在屏幕中            rightView.layout(l, t, r, b);        }    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);    }    @SuppressLint("NewApi")    @Override    public boolean onTouchEvent(MotionEvent event) {        final float X = event.getX();        float Y = event.getY();        switch (event.getAction()) {        case MotionEvent.ACTION_MOVE:            System.out.println("X:" + X);            if (X < 100) {                scrollTo(0, 0);            } else if (X > rightView.getMeasuredWidth() - 100) {
   // 当用户滑动至离右边缘100时,页面关闭                new Thread(new Runnable() {
   // 新建线程,滑动关闭                            @Override                            public void run() {                                for (int i = 0;; i++) {                                    try {                                        Thread.sleep(10);// rightView每隔10ms右移3,保证滑动流畅                                    } catch (InterruptedException e) {                                        e.printStackTrace();                                    }                                    int len = (int) (X + 3 * i);                                    // System.out.println("len:" + len);                                    Message message = new Message();// android中非UI线程不允许直接操作控件,可以将消息发送至主线程的handler类                                    if (len >= rightView.getMeasuredWidth()) {                                        message.what = 1;                                        handler.sendMessage(message);// 发送消息                                                                        // 关闭View                                        break;                                    } else {                                        message.what = 0; // 发送消息 自动滑动                                        handler.sendMessage(message);                                    }                                }                            }                        }).start();            } else {                scrollTo((int) -X, 0);                // 计算透明度信息                float alpha = (float) (1.0 - (float) (1.0 / 400) * X);                // System.out.println("alpha:" + al);                // 设置透明度                leftView.setAlpha(alpha);            }            break;        }        // 设置true,消费event事件,不在向外传递        return true;    }    @SuppressLint("HandlerLeak")    Handler handler = new Handler() {        @SuppressLint("NewApi")        @Override        public void handleMessage(Message msg) {            if (msg.what == 0) {                scrollBy(-3, 0);// viewgroup向右滑动3            } else if (msg.what == 1) {                Toast.makeText(getContext(), "关闭", 50).show();                setVisibility(View.GONE);// 设置viewgroup不可见(隐藏)            }        }    };}

使用:

要显示底下的activity界面需要使用Fragment的add方法

//新建一个FragmentFragment bFragment = new BFragment();getFragmentManager().beginTransaction().add(R.id.fragment, bFragment).commit();

工程源码下载:http://pan.baidu.com/share/link?shareid=866490907&uk=1141451701