仿QQmini的侧滑效果SlidingMenu

Slidingmenu很多地方都有。。之前项目有要求模仿QQmini的，所以现在记录一下, 2013-1-9 22:28最后更改，不去记录pointID,暂时处理不好，在拖动的时候在点击滑动页面就会出现getX()越界, MotionEvent.java没细看，先这样吧...

android 的touch事件处理请参考我转载的一篇文章：http://blog.csdn.net/feng283797821/article/details/8485522

转载请注明出处http://blog.csdn.net/feng283797821/article/details/8485382

先看效果图

                                        

效果比较挫。。。。将就吧。。。源码我将会放到CSDN上面需要的可以下载

自定义控件的代码：

package com.feng.view;import com.feng.qqmini.R;import com.feng.utils.Util;import android.content.Context;import android.util.AttributeSet;import android.util.Log;import android.view.GestureDetector;import android.view.GestureDetector.OnGestureListener;import android.view.MotionEvent;import android.view.View;import android.view.ViewConfiguration;import android.view.animation.AnimationUtils;import android.widget.LinearLayout;import android.widget.Scroller;public class HomeCenterLayout extends LinearLayout {private final static String TAG = "HomeCenterLayout";public final int MENU_border_Width = 40;    private Scroller mScroller;        private GestureDetector gestureDetector;        private LinearLayout leftLayout, rightLayout, childLayout;    private Context context;    private boolean fling;        private boolean mIsBeingDragged = false;        private int mTouchSlop;    /**     * Position of the last motion event.     */    private float mLastMotionX, mLastMotionY;        /**     * ID of the active pointer. This is used to retain consistency during     * drags/flings if multiple pointers are used.     */    //private int mActivePointerId = INVALID_POINTER;        /**     * Sentinel value for no current active pointer.     * Used by {@link #mActivePointerId}.     */    private static final int INVALID_POINTER = -1;        int menuWidth = 0;    int moveWidth = 0;public HomeCenterLayout(Context context, AttributeSet attrs) {super(context, attrs);initView(context);}public HomeCenterLayout(Context context) {super(context);initView(context);}public Scroller getScroller() {return mScroller;}public void initView(Context context) {this.context = context;this.menuWidth = MENU_border_Width;this.mScroller = new Scroller(context,AnimationUtils.loadInterpolator(context,android.R.anim.overshoot_interpolator));        final ViewConfiguration configuration = ViewConfiguration.get(context);        mTouchSlop = configuration.getScaledTouchSlop();}public void addChildView(View child) {this.childLayout.addView(child);}   @Overrideprotected void onLayout(boolean changed, int left, int top, int right,int bottom) {super.onLayout(changed, left, top, right, bottom);//Log.i(TAG + " onLayout", "on layout  "+changed+" "+left+" "+top+" "+right+" "+bottom);for (int i = 0; i < getChildCount(); i++) {View child = getChildAt(i);child.layout(child.getLeft()+moveWidth,child.getTop(),child.getRight()+moveWidth,child.getBottom());}}        @Overridepublic void computeScroll() {if (mScroller.computeScrollOffset()) {           scrollTo(mScroller.getCurrX(), 0);           postInvalidate();}}    @Overridepublic boolean onInterceptTouchEvent(MotionEvent ev) {// TODO Auto-generated method stubLog.i(TAG, "onInterceptTouchEvent------>"+ev.getAction());        final int action = ev.getAction();        if ((action == MotionEvent.ACTION_MOVE) && (mIsBeingDragged)) {            return true;//拦截不传递给child view        }            switch (action & MotionEvent.ACTION_MASK) {        case MotionEvent.ACTION_DOWN: {        final float x = ev.getX();        final float y = ev.getY();            if (!inChild((int)x, (int) y)) {                mIsBeingDragged = false;                break;                //超出边界,return false传递给子view处理            }            /*             * Remember location of down touch.             * ACTION_DOWN always refers to pointer index 0.             */            mLastMotionX = x;            mLastMotionY = y;            //mActivePointerId = ev.getPointerId(0);            /*            * If being flinged and user touches the screen, initiate drag;            * otherwise don't.  mScroller.isFinished should be false when            * being flinged.            */            mIsBeingDragged = !mScroller.isFinished();            break;        }        case MotionEvent.ACTION_MOVE: {            /*             * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check             * whether the user has moved far enough from his original down touch.             */            /*            * Locally do absolute value. mLastMotionY is set to the y value            * of the down event.            */            final int activePointerId = mActivePointerId;            if (activePointerId == INVALID_POINTER) {                // If we don't have a valid id, the touch down wasn't on content.                break;            }            //final int pointerIndex = ev.findPointerIndex(activePointerId);            final float x = ev.getX(/*pointerIndex*/);            final float y = ev.getY(/*pointerIndex*/);            final int xDiff = (int) Math.abs(x - mLastMotionX);            final int yDiff = (int) Math.abs(y - mLastMotionY);            if (xDiff > mTouchSlop && yDiff < xDiff) {                mIsBeingDragged = true;                //mLastMotionX = x;                //mLastMotionY = y;            }            break;        }        case MotionEvent.ACTION_CANCEL:        case MotionEvent.ACTION_UP:            mIsBeingDragged = false;            //mActivePointerId = INVALID_POINTER;            snapToDestination();            break;        }        return mIsBeingDragged;}@Overridepublic boolean onTouchEvent(MotionEvent event) {Log.i(TAG, "onTouchEvent ---->>>>>"+event.getAction());        if (event.getAction() == MotionEvent.ACTION_DOWN &&         !inChild((int)event.getX(), (int)event.getY())) {            // Don't handle edge touches immediately -- they may actually belong to one of our            // descendants.            return false;        }                switch(event.getAction() & MotionEvent.ACTION_MASK) {        case MotionEvent.ACTION_DOWN: {        return true; //本VIEW消化掉        //break;        }        case MotionEvent.ACTION_MOVE: {        /*if(mIsBeingDragged)*/ {        //final int activePointerIndex = event.findPointerIndex(mActivePointerId);                final float x = event.getX(/*activePointerIndex*/);            final float y = event.getY(/*activePointerIndex*/);                final int distanceX = (int) /*Math.abs*/-(x - mLastMotionX);            if( distanceX < 0 && getScrollX() < 0 && leftLayout != null) {            setBrotherVisibility(true);                   }            else if(distanceX > 0 && getScrollX() > 0 && rightLayout != null) {            setBrotherVisibility(false);            }            else {            }                        scrollBy((int) distanceX, 0);                                mLastMotionX = x;                    mLastMotionY = y;        }        break;        }        case MotionEvent.ACTION_UP: {                mIsBeingDragged = false;                //mActivePointerId = INVALID_POINTER;                snapToDestination();        break;        }        default:        return super.onTouchEvent(event);        }        return mIsBeingDragged;}   @Overrideprotected void onScrollChanged(int l, int t, int oldl, int oldt) {// TODO Auto-generated method stubsuper.onScrollChanged(l, t, oldl, oldt);}public void scrollToScreen() {/*if (getFocusedChild() != null && whichScreen != currentScreenIndex                && getFocusedChild() == getChildAt(currentScreenIndex)) {        getFocusedChild().clearFocus();}*/int scrollDistance = 0;//getWidth()*(getChildCount()-whichScreen) - getScrollX();if(Math.abs(getScrollX()) > getWidth()/2)scrollDistance = (getScrollX() > 0) ? getWidth()-menuWidth-getScrollX() : -(getWidth()-menuWidth-Math.abs(getScrollX()));elsescrollDistance = -getScrollX();//Log.i(TAG, " scrollDistance = "+scrollDistance);mScroller.startScroll(getScrollX(), 0, scrollDistance, 0, Math.abs(scrollDistance) * 2);invalidate();   }       public boolean onFling(MotionEvent e1, MotionEvent e2,float velocityX, float velocityY) {//Log.d(TAG, "on onFling>>>");if (Math.abs(velocityX) > ViewConfiguration.get(context).getScaledMinimumFlingVelocity()) {fling = true;snapToDestination();}  return true;}   private void snapToDestination() {//       Log.i(TAG+" snapToDestination", "getScrollX() = "+getScrollX() + " getWidth()="+getWidth());       scrollToScreen();   }      private boolean inChild(int x, int y) {       if (getChildCount() > 0) {           final int scrollX = mScroller.getCurrX();           final View child = getChildAt(0);           return !(scrollX + x < 0            || scrollX + x > getWidth()           || y < 0           || y> getHeight());       }       return false;   }       /**    * @param String类型 "left", "right", "middle"/"other" 忽略大小写    * */public void setSkipToWhichPage(String whichpg) {   int targetX = 0, moveDistance = 0;   if(whichpg.equalsIgnoreCase("left")) {   targetX = -(Util.getViewWidthInPix(context) - menuWidth);   setBrotherVisibility(true);   }   else if(whichpg.equalsIgnoreCase("right")) {   targetX = Util.getViewWidthInPix(context) - menuWidth;   setBrotherVisibility(false);   }   else    ;      moveDistance = targetX - getScrollX();   Log.i(VIEW_LOG_TAG, "targetX="+targetX+",moveDistance="+moveDistance);   mScroller.startScroll(getScrollX(), 0, moveDistance, 0, 0);   invalidate();    }    public void setBrotherLayout(LinearLayout left, LinearLayout right) {this.leftLayout = left;this.rightLayout = right;}private void setBrotherVisibility(boolean leftSide) {        if(leftSide) {            rightLayout.setVisibility(View.GONE);            leftLayout.setVisibility(View.VISIBLE);        }        else {            rightLayout.setVisibility(View.VISIBLE);            leftLayout.setVisibility(View.GONE);        }}}

代码下载地址http://download.csdn.net/detail/feng283797821/4977504

有个开源的 https://github.com/jfeinstein10/SlidingMenu