scrollview嵌套webview

webview不能滑动问题：

  webview.setOnTouchListener(new View.OnTouchListener() {                @Override            public boolean onTouch(View v, MotionEvent ev) {                if (ev.getAction() == MotionEvent.ACTION_UP){                    scrollView.requestDisallowInterceptTouchEvent(false);}                else{                    scrollView.requestDisallowInterceptTouchEvent(true);}                    return false;            }        });