重写这个方法
mWebView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:{
if(mWebView.getScrollY() <= 0){
refreshLayout.setEnabled(true);
} else {
refreshLayout.setEnabled(false);
}
}
default:
break;
}
return false;
}
});