强制隐藏键盘/resignFirstResponder

发布于 2024-12-17 21:40:19 字数 206 浏览 2 评论 0原文

我正在开发一个应用程序，它有一个 tableView ，每个单元格的右侧都有一个 textField （有超过 20 个单元格）。我已经为除最后一行之外的每一行创建了自定义单元格。最后一行只有一个按钮。

现在我想在单击按钮时调用 resignFirstResponder。
我该怎么办请帮忙？

原文

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

念三年u 2024-12-24 21:40:19

您必须跟踪哪个单元格中的哪个文本字段有第一响应者，并像这样退出它。

[myCellTextField resignFirstResponder];

You will have to keep track of which textfield in which cell has the first responder and resign it like this.

[myCellTextField resignFirstResponder];

回复收藏 0 原文

淡紫姑娘！ 2024-12-24 21:40:19

您可能想用键盘跟踪文本字段。在控制器中实现协议，并将控制器设置为每个文本字段的委托。像这样编写 textFieldDidBeginEditing: 方法，设置一个名为 currentTextField 的实例变量：

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    currentTextField = [textField retain];
}

然后，在按钮的操作中运行 [currentTextField resignFirstResponder]。

You probably want to keep track of the text field with the keyboard. Implement the <UITextFieldDelegate> protocol in your controller, and set the controller as each of the text fields' delegates. Write the textFieldDidBeginEditing: method like so, setting an instance variable called currentTextField:

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    currentTextField = [textField retain];
}

Then, in your action for the button run [currentTextField resignFirstResponder].

回复收藏 0 原文

若沐 2024-12-24 21:40:19

Aopsfan的答案可能是迄今为止最好的解决方案。但是，要添加它（因为我无法发表评论），请记住取消分配该对象：

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    if (currentTextField != nil) {
        [currentTextField release];
    }
    currentTextField = [textField retain];
}

最好还是使用@property's和@synthesize，以便运行时可以为您进行内存管理。

[ViewController].h

@property (nonatomic, retain) UITextField* currentTextField;

[ViewController].m

@synthesize currentTextField = _currentTextField;

- (void)viewDidLoad|Appear {
    self.currentTextField = nil;
}

- (void) dealloc {
    [_currentTextField release], _currentTextField = nil;
    ...
    [super dealloc];
}

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    self.currentTextField = textField;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (self.currentTextField) {
        [self.currentTextField resignFirstResponder];
    }
}

Aopsfan's answer is probably the best solution so far. However, to add to it (as I cannot post comments), do remember to deallocate the object:

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    if (currentTextField != nil) {
        [currentTextField release];
    }
    currentTextField = [textField retain];
}

Better still use @property's and @synthesize so the runtime can do the memory management for you.

[ViewController].h

@property (nonatomic, retain) UITextField* currentTextField;

[ViewController].m

@synthesize currentTextField = _currentTextField;

- (void)viewDidLoad|Appear {
    self.currentTextField = nil;
}

- (void) dealloc {
    [_currentTextField release], _currentTextField = nil;
    ...
    [super dealloc];
}

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    self.currentTextField = textField;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (self.currentTextField) {
        [self.currentTextField resignFirstResponder];
    }
}

回复收藏 0 原文