UitextField resignFirstResponder 在滚动视图中不起作用

我有 2 个函数用于 resignFirstResponder 但当文本字段位于滚动视图中时它们都不起作用

我的职能：

-(BOOL)textFieldShouldReturn:(UITextField *)theTextField {

        if (theTextField == textField1) {
        [textField1 resignFirstResponder];
    }
    if (theTextField == textField2) {
        [textField2 resignFirstResponder];
    }
    if (theTextField == textField3) {
        [textField3 resignFirstResponder];
    }


    return YES;

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    [textField1 resignFirstResponder];
    [textField2 resignFirstResponder];
    [textField3 resignFirstResponder];

}

我已经在 IB 中链接了滚动视图，我无法找出为什么只有当我单击滚动视图之外时它才不起作用。所以它只响应视图，但为什么？我认为[[event allTouches] anyObject]响应 ANYObjects 上的 ALLtouches

感谢帮助

您还可以使用手势识别器来获取背景点击。使用cancelsTouchesInView = NO 将所有其他触摸转发到正确的接收器。

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTappedBackground:)];
tapGesture.cancelsTouchesInView = NO;
[self.scrollView addGestureRecognizer:tapGesture];