在UINavigationbar中添加完成按钮 [英] Add a done button in a UINavigationbar

问题描述

当用户触摸特定的文本字段或文本视图时，如何向UINavigationbar添加完成按钮?

How does one add a done button to a UINavigationbar when the user touches a specific textfield or textview?

或者更好的方法是检测何时显示键盘，然后显示按钮.

Or would a better way be to detect when the keyboard is showing, and then display the button.

我希望完成按钮能够像标准Notes应用程序一样关闭键盘.

I would like the done button to dismiss the keyboard like in standard Notes application.

推荐答案

您可以尝试类似的操作:

You could try something similar to this:

- (void)textFieldDidBeginEditing:(UITextField *)textField 
{       
    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                                                                target:self
                                                                                action:@selector(doneEditing)];
    [[self navigationItem] setRightBarButtonItem:doneButton];
    [doneButton release];
}

还有

- (void)textViewDidBeginEditing:(UITextView *)textView 
{       
    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                                                                target:self
                                                                                action:@selector(doneEditing)];
    [[self navigationItem] setRightBarButtonItem:doneButton];
    [doneButton release];
}

根据您的喜好定制以下内容

with the following customized as you like

- (void)doneEditing {
    [[self view] endEditing:YES];
}

然后在-(void)textFieldDidEndEditing:(UITextField *)textField 中以及在-(void)textViewDidEndEditing:(UITextView *)textView

只记得设置代表！

这篇关于在UINavigationbar中添加完成按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！