在IB的库中,介绍告诉我们,当按下返回键时,UITextView的键盘将消失。但实际上返回键只能作为'\n'
我可以添加一个按钮,并使用[txtView resignFirstResponder]隐藏键盘。
但是有没有办法为键盘中的返回键添加动作,这样我就不需要添加UIButton了?
在IB的库中,介绍告诉我们,当按下返回键时,UITextView的键盘将消失。但实际上返回键只能作为'\n'
我可以添加一个按钮,并使用[txtView resignFirstResponder]隐藏键盘。
但是有没有办法为键盘中的返回键添加动作,这样我就不需要添加UIButton了?
当前回答
-(BOOL)textFieldShouldReturn:(UITextField *)textField; // called from textfield (keyboard)
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text; // good tester function - thanks
其他回答
用另一种方法解决了这个问题。
Create a button that will be placed in the background From the Attribute Inspector, change the button type to custom, and the makes the button transparent. Expand the button to cover the whole view, and make sure the button is behind all the other object. Easy way to do this is to drag the button to the top of list view in the View Control drag the button to the viewController.h file and create an action (Sent Event: Touch Up Inside) like : (IBAction)ExitKeyboard:(id)sender; In ViewController.m should look like : (IBAction)ExitKeyboard:(id)sender { [self.view endEditing:TRUE]; } Run app, and when you click away from the TextView, the keyboard disappears
-(BOOL)textFieldShouldReturn:(UITextField *)textField; // called from textfield (keyboard)
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text; // good tester function - thanks
在视图控制器中添加这个方法。
迅速:
func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
if text == "\n" {
textView.resignFirstResponder()
return false
}
return true
}
这个方法对你也有帮助:
/**
Dismiss keyboard when tapped outside the keyboard or textView
:param: touches the touches
:param: event the related event
*/
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
if let touch = touches.anyObject() as? UITouch {
if touch.phase == UITouchPhase.Began {
textField?.resignFirstResponder()
}
}
}
在使用uitextview时还有另一个解决方案, 你可以添加工具栏作为InputAccessoryView在“textViewShouldBeginEditing”,并从这个工具栏的完成按钮,你可以解雇键盘,这是如下代码:
在viewDidLoad
toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)]; //toolbar is uitoolbar object
toolBar.barStyle = UIBarStyleBlackOpaque;
UIBarButtonItem *btnDone = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(btnClickedDone:)];
[toolBar setItems:[NSArray arrayWithObject:btnDone]];
在textviewdelegate方法
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView
{
[textView setInputAccessoryView:toolBar];
return YES;
}
在操作按钮完成,这是在工具栏如下:
-(IBAction)btnClickedDone:(id)sender
{
[self.view endEditing:YES];
}
不要忘记为textView设置委托-否则resignfirstresponder将无法工作。