ViewPager嵌套(内层ViewPager可以滑动之父类兼容listView)

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package com.peopledailychina.activity.widget;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewGroup;

/**
 * viewpage 和listview 相互冲突 将父view 传递到viewpage 里面 使用父类的方法
 * parent.requestDisallowInterceptTouchEvent(true); 当
 * requestDisallowInterceptTouchEvent 如果为true的时候 表示:父view 不拦截子view的touch 事件
 * 这个方法只是改变flag
 */
public class FinalViewPager extends ViewPager {private ViewGroup parent;

    private float startX;
    private float startY;
    private float lastX;
    private float lastY;
    private float endX;
    private float endY;
    public boolean isFixTouch = true;

    enum Orientation {VERTICAL, HORIZONTAL;
    }public FinalViewPager(Context context) {super(context);
        // TODO Auto-generated constructor stub
    }public FinalViewPager(Context context, AttributeSet attrs) {super(context, attrs);
    }@Override
    protected void onAttachedToWindow() {// TODO Auto-generated method stub
        super.onAttachedToWindow();
        this.parent = (ViewGroup) getParent();
    }public void setNestedpParent(ViewGroup parent) {this.parent = parent;
    }@Override
    public boolean dispatchTouchEvent(MotionEvent ev) {if (isFixTouch) {if (parent == null) {return super.dispatchTouchEvent(ev);
            }float x = ev.getX();
            float y = ev.getY();

            switch (ev.getAction()) {case MotionEvent.ACTION_DOWN:parent.requestDisallowInterceptTouchEvent(true);
                    break;
                case MotionEvent.ACTION_MOVE:float moveX = x - lastX;
                    float moveY = y - lastY;
                    if (Math.abs(moveX) / Math.abs(moveY) > 1) {parent.requestDisallowInterceptTouchEvent(true);
                    } else {parent.requestDisallowInterceptTouchEvent(false);
                    }break;
                case MotionEvent.ACTION_UP:case MotionEvent.ACTION_CANCEL:break;
                default:break;
            }lastX = x;
            lastY = y;
        }return super.dispatchTouchEvent(ev);
    }public boolean isFixTouch() {return isFixTouch;
    }public void setFixTouch(boolean fixTouch) {isFixTouch = fixTouch;
    }
// @Override
    // public boolean onTouchEvent(MotionEvent arg0) {
    // // TODO Auto-generated method stub
    // switch (arg0.getAction()) {
    // case MotionEvent.ACTION_UP:
    // case MotionEvent.ACTION_CANCEL:
    // return true;
    // default:
    // break;
    // }
    // return super.onTouchEvent(arg0);
    // }

    private Orientation getScrollOrientation(MotionEvent ev) {switch (ev.getAction()) {case MotionEvent.ACTION_DOWN:startX = ev.getX();
                startY = ev.getY();

                break;
            case MotionEvent.ACTION_MOVE:float moveX = ev.getX() - startX;
                float moveY = ev.getY() - startY;
                if (Math.abs(moveX) >= Math.abs(moveY)) {return Orientation.HORIZONTAL;
                }break;
            case MotionEvent.ACTION_UP:startX = 0;
                startY = 0;

                break;
            default:break;
        }return Orientation.VERTICAL;
    }
}