[移动开发]Android解决DrawerLayout嵌套RecyclerView滑动冲突

做了个app，界面布局如下图

在DrawerLayout的左边侧滑菜单中嵌套了一个recyclerview，drawerlayout可以左右侧滑，起到菜单拉开关闭的效果，recyclerview可以上下滑动，因此容易引起滑动冲突的现象，正常操作还好，没看出什么不好的影响，但是上下快速滑动recyclerview的时候就很容易莫名其妙触发抽屉菜单关闭了。

?网上找了很多资料，最后发现重写DrawerLayout后效果完美，毫无违和感，代码如下：

package com.pang.note.ui;

import android.content.Context;
import android.support.v4.widget.DrawerLayout;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewConfiguration;

/**
 * by pang,完美解决drawerLayout嵌套recyclerView滑动事件冲突的问题，https://blog.csdn.net/pang9998/article/details/120230771
 */
public class CustomDrawerLayout extends DrawerLayout {
    private int   mTouchSlop;
    private float mLastMotionX;
    private float mLastMotionY;

    public CustomDrawerLayout(Context context){
        this(context, null);
    }
    public CustomDrawerLayout(Context context,AttributeSet attrs) {
        this(context, attrs, 0);
    }
    public CustomDrawerLayout(Context context,AttributeSet attrs, int defStyle) {
        super(context, attrs,defStyle);
        final ViewConfiguration configuration = ViewConfiguration.get(getContext());
        mTouchSlop =configuration.getScaledTouchSlop();
    }
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        try {
            final float x = ev.getX();
            final float y= ev.getY();

            switch(ev.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    mLastMotionX= x;
                    mLastMotionY= y;
                    break;

                case MotionEvent.ACTION_MOVE:
                    int xDiff = (int) Math.abs(x - mLastMotionX);
                    int yDiff = (int) Math.abs(y - mLastMotionY);
                    final int x_yDiff = xDiff * xDiff + yDiff * yDiff;

                    boolean xMoved = x_yDiff > mTouchSlop * mTouchSlop;

                    if(xMoved) {
                        if(xDiff > yDiff * 4) {
                            return true;
                        }else {
                            return false;
                        }
                    }
                    break;
                default:

                    break;
            }
            return super.onInterceptTouchEvent(ev);
        } catch(IllegalArgumentException ex) {
        }
        return false;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev){
        try {
            return super.onTouchEvent(ev);
        } catch(IllegalArgumentException ex) {
        }
        return false;
    }
}