我有一个UIToolbar
,我将inputAccessoryView
作为UITextFields
添加到带有数字键盘的三个UIToolbar
。在这个UITextField
上,我有一个取消和完成按钮,根据这篇文章解除键盘:trying to add done button to Numeric keyboard。这适用于一个UITextFields
,可以轻松识别。但是,我正在尝试为三个- (void) viewDidLoad
{
[super viewDidLoad];
// weight, numberOfDrinks, and drinkingDuration are UITextFields set up in Storyboard.
// I implemented the UITextFieldDelegate protocol in the .h file and set the UITextField's delegates to the owning ViewController in Storyboard.
self.weight.delegate = self;
self.numberOfDrinks.delegate = self;
self.drinkingDuration.delegate = self;
}
- (void) textFieldDidBeginEditing:(UITextField *)textField {
UIToolbar *doneToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
doneToolbar.barStyle = UIBarStyleBlackTranslucent;
// I can't pass the textField as a parameter into an @selector
doneToolbar.items = [NSArray arrayWithObjects:
[[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancelKeyboard:)],
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil],
[[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(doneWithKeyboard:)],
nil];
[doneToolbar sizeToFit];
textField.inputAccessoryView = doneToolbar;
}
- (void) cancelKeyboard: (UITextField *) textField {
textField.text = @"";
[textField resignFirstResponder];
}
- (void) doneWithKeyboard: (UITextField *) textField {
[textField resignFirstResponder];
}
使用相同的代码。这就是我所拥有的:
{{1}}
我收到“无法识别的选择器发送到实例”错误,因为cancelKeyboard和doneWithKeyboard方法没有传递他们需要的textField参数。任何想法如何正确实现?
谢谢!
本
答案 0 :(得分:1)
在.h文件中使用globle对象 UITextField * SelectedTextField; //在开始编辑方法定义 SelectedTextField = textField; 然后在你的方法上使用它来辞职或展示。
这会对你有帮助。
答案 1 :(得分:1)
如果您只想关闭当前视图控制器中的键盘,可以调用视图控制器的view属性的endEditing方法:
[self.view endEditing];