ListView滑动冲突

一 ListView文件

public class MyListerView extends ListView {
    private float mLastY;// 当前触摸点高度
    boolean isBotton = false;  // listview 是否滑动到底部
    boolean isTop = false;     // lisview 是否滑动到顶部

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

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

    public MyListerView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        setOnScrollListener(new OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView absListView, int i) {

            }

            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                if (totalItemCount == 0) {
                    isTop = true;
                    isBotton = true;
                    return;
                }
                // 判断 listview 滑动到底部
                if (visibleItemCount + firstVisibleItem == totalItemCount) {
                    View lastVisibleItemView = getChildAt(totalItemCount - firstVisibleItem - 1);
                    if (lastVisibleItemView != null && lastVisibleItemView.getBottom() <= view.getHeight()) {
                        // 滑动到了底部
                        isBotton = true;
                    } else {
                        isBotton = false;
                    }
                } else {
                    isBotton = false;
                }
                // 判断listview 滑动到顶部
                if (firstVisibleItem == 0) {
                    View firstVisibleItemView = getChildAt(0);
                    if (firstVisibleItemView != null && firstVisibleItemView.getTop() == 0) {
                        // 滑动到了底部
                        isTop = true;
                    } else {
                        isTop = false;
                    }
                } else {
                    isTop = false;
                }
            }
        });
    }
    
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        int action = ev.getAction();
        switch (action) {
            case MotionEvent.ACTION_DOWN:
                super.onInterceptTouchEvent(ev);
                //不允许上层viewGroup拦截事件.
                getParent().requestDisallowInterceptTouchEvent(true);
                break;
            case MotionEvent.ACTION_MOVE:
                if ((ev.getY() - mLastY) < 0) {
                    getParent().requestDisallowInterceptTouchEvent(!isBotton);
                } else if ((ev.getY() - mLastY) > 0) {
                    getParent().requestDisallowInterceptTouchEvent(!isTop);
                }
                break;
            case MotionEvent.ACTION_UP:
                //不允许上层viewGroup拦截事件
                getParent().requestDisallowInterceptTouchEvent(true);
                break;
        }
        mLastY = ev.getY();
        return super.dispatchTouchEvent(ev);
    }
 

}