ScrollView下嵌套GridView或ListView默认不在顶部的解决方法

自定义ScrollView重写下面的方法

/* ScrollView下嵌套GridView或ListView默认不在顶部的解决方法*/
@Override
protected int computeScrollDeltaToGetChildRectOnScreen(Rect rect) {
return 0;
}

例如:

package com.bearbaby.erp.staff.widget;

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewConfiguration;
import android.widget.ScrollView;

/**
 * Created by admin on 2017/5/15.
 */

public class MyScrollView extends ScrollView{
    private int mTouchSlop;
    // 上一次触摸时的X坐标
    private float mPrevX;
    private boolean intercept;// 是否被拦截

    public MyScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);

        // 触发移动事件的最短距离，如果小于这个距离就不触发移动控件
        mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
    }
        /* ScrollView下嵌套GridView或ListView默认不在顶部的解决方法*/
    @Override
    protected int computeScrollDeltaToGetChildRectOnScreen(Rect rect) {
        return 0;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                mPrevX = event.getX();
                intercept = true;
                break;

            case MotionEvent.ACTION_MOVE:
                final float eventX = event.getX();
                float xDiff = Math.abs(eventX - mPrevX);
                // Log.d("refresh" ,"move----" + eventX + "   " + mPrevX + "   " + mTouchSlop);
                // 增加60的容差，让下拉刷新在竖直滑动时就可以触发
                if (xDiff > mTouchSlop + 10) {
                    intercept = false;
                }
        }
        return super.onInterceptTouchEvent(event) && intercept;
    }
}