android开发，自定义左侧滑出菜单

这里给大家提供一个类似QQ聊天那种可以左侧滑出菜单的自定义控件。希望对大家有帮助。参考了一些网友的做法，自己整理优化了一下，用法非常简单，就一个类，不需要自己写任何的代码，只要添加上布局就能实现侧滑菜单效果，非常方便。不多说，一看就懂。

先来看看效果：

先看看实现：

package com.kokjuis.travel.customView;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Point;
import android.support.v4.widget.ViewDragHelper;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;

import com.kokjuis.travel.R;

/**
 * 

 

 

 

 

 
 .........你的布局

 

 
 *
 *
 *
 * 用法就是直接用这个控件把需要的布局包起来
 *  可滑动的layout extends FrameLayout
 */
public class SwipeDragLayout extends FrameLayout {

    private static SwipeDragLayout mCacheView;
    private View contentView;//列表的view
    private View menuView;//滑出菜单的view
    private ViewDragHelper mDragHelper;
    private Point originPos = new Point();
    private boolean isOpen, ios, clickToClose;
    private float offset;
    private float needOffset = 0.2f;
    private SwipeListener mListener;

    public SwipeDragLayout(Context context) {
        this(context, null);
    }

    public SwipeDragLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public SwipeDragLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

        TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.SwipeDragLayout);
        needOffset = array.getFloat(R.styleable.SwipeDragLayout_need_offset, 0.2f);
        //是否有回弹效果
        ios = array.getBoolean(R.styleable.SwipeDragLayout_ios, false);
        clickToClose = array.getBoolean(R.styleable.SwipeDragLayout_click_to_close, false);
        init();
        array.recycle();
    }

    public static SwipeDragLayout getmCacheView() {
        return mCacheView;
    }

    //初始化dragHelper，对拖动的view进行操作
    private void init() {
        mDragHelper = ViewDragHelper.create(this, 1.0f, new ViewDragHelper.Callback() {


            @Override
            public boolean tryCaptureView(View child, int pointerId) {
                return child == contentView;
            }


            @Override
            public void onViewReleased(View releasedChild, float xvel, float yvel) {
                if (releasedChild == contentView) {
                    if (isOpen()) {
                        if (offset != 1 && offset > (1 - needOffset)) {
                            open();
                        } else if (offset == 1) {
                            if (clickToClose) {
                                close();
                            }
                        } else {
                            close();
                        }
                    } else {
                        if (offset != 0 && offset < needOffset) {
                            close();
                        } else if (offset == 0) {
                            getParent().requestDisallowInterceptTouchEvent(false);
                        } else {
                            open();
                            Log.d("Released and isOpen", "" + isOpen);
                            if (mListener != null) {
                                mListener.onOpened(SwipeDragLayout.this);
                            }
                        }
                    }
                    invalidate();
                }
            }


            @Override
            public int clampViewPositionHorizontal(View child, int left, int dx) {
                //滑动距离,如果启动效果，则可滑动3/2倍菜单宽度的距离
                final int leftBound = getPaddingLeft() - (ios ? menuView.getWidth() * 3 / 2 : menuView.getWidth());
                final int rightBound = getWidth() - child.getWidth();
                final int newLeft = Math.min(Math.max(left, leftBound), rightBound);
                return newLeft;
            }

            @Override
            public int getViewHorizontalDragRange(View child) {
                return contentView == child ? menuView.getWidth() : 0;
            }

            @Override
            public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
                final int childWidth = menuView.getWidth();
                offset = -(float) (left - getPaddingLeft()) / childWidth;
                //offset can callback here
                if (mListener!=null){
                    mListener.onUpdate(SwipeDragLayout.this,offset);
                }
            }


        });

    }

    public void setClickToClose(boolean clickToClose) {
        this.clickToClose = clickToClose;
    }

    public void setIos(boolean ios) {
        this.ios = ios;
    }

    public boolean isOpen() {
        return isOpen;
    }

    public void open() {
        mCacheView = SwipeDragLayout.this;
        mDragHelper.settleCapturedViewAt(originPos.x - menuView.getWidth(), originPos.y);
        isOpen = true;
    }

    public void smoothOpen(boolean smooth) {
        mCacheView = SwipeDragLayout.this;
        if (smooth) {
            mDragHelper.smoothSlideViewTo(contentView, originPos.x - menuView.getWidth(), originPos.y);
        } else {
            contentView.layout(originPos.x - menuView.getWidth(), originPos.y, menuView.getLeft(), menuView.getBottom());
        }
    }

    //滑动关闭方法
    private void smoothClose(boolean smooth) {
        if (smooth) {
            mDragHelper.smoothSlideViewTo(contentView, getPaddingLeft(), getPaddingTop());
            postInvalidate();
        } else {
            contentView.layout(originPos.x, originPos.y, menuView.getRight(), menuView.getBottom());
        }
        isOpen = false;
        mCacheView = null;

    }



    public void close() {
        mDragHelper.settleCapturedViewAt(originPos.x, originPos.y);
        isOpen = false;
        mCacheView = null;
        if (mListener != null) {
            mListener.onClosed(SwipeDragLayout.this);
        }
    }
    
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        switch (ev.getAction()) {

            case MotionEvent.ACTION_DOWN:
                if (mCacheView != null) {
                    if (mCacheView != this) {
                        mCacheView.smoothClose(true);
                        return true;//点击关闭后不执行其他click事件
                    }else if(isOpen()&&ev.getX()

必要的一些配置，添加到attrs.xml里：

看看用法，非常简单，直接放在你想要的item布局里面就可以了：

 

    

        

        

    


    

        //你自己的布局.....