iOS滚动视图禁用内容

Question

我已注册表单，当键盘隐藏时，我正在更改内容插入和偏移，之后我无法捕捉到任何触摸事件。

-(void)keyboardWillShow:(NSNotification *)notification {

    CGRect keyboardRect = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    //calculating values

    self.scrollView.contentInset = contentInsets;
    self.scrollView.scrollIndicatorInsets = contentInsets;
    [self.scrollView setContentOffset:scrollPoint];
}

-(void)keyboardWillHide:(NSNotification *)notification {
    self.scrollView.contentOffset = CGPointMake(0, 200);
    self.scrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
    self.scrollView.scrollIndicatorInsets = self.scrollView.contentInset;
}

如果我删除偏移或插入的更改，则效果很好。但我需要设置偏移和插入。