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
我使用这段代码来更改响应器。
- (BOOL)textView:(UITextView*) textView shouldChangeTextInRange: (NSRange) range replacementText: (NSString*) text
{
if ([text isEqualToString:@"\n"]) {
//[textView resignFirstResponder];
//return YES;
NSInteger nextTag = textView.tag + 1;
// Try to find next responder
UIResponder* nextResponder = [self.view viewWithTag:nextTag];
if (nextResponder) {
// Found next responder, so set it.
[nextResponder becomeFirstResponder];
} else {
// Not found, so remove keyboard.
[textView resignFirstResponder];
}
return NO;
return NO;
}
return YES;
}
其他回答
你应该添加UIToolbar到顶部UITextView,而不是使用shouldChangeTextIn
在Swift 4中
let toolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 50))
toolbar.barStyle = .default
toolbar.items = [
UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil),
UIBarButtonItem(title: "Done", style: .done, target: self, action: #selector(doneAction))
]
textView.inputAccessoryView = toolbar
@objc func doneAction(){
self.textView.resignFirstResponder()
}
函数hideQueboard。
- (void)HideQueyboard
{
[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];
}
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
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()
}
}
}
我发现josebama的回答是这个帖子中最完整、最干净的答案。
下面是Swift 4的语法:
func textView(_ textView: UITextView, shouldChangeTextIn _: NSRange, replacementText text: String) -> Bool {
let resultRange = text.rangeOfCharacter(from: CharacterSet.newlines, options: .backwards)
if text.count == 1 && resultRange != nil {
textView.resignFirstResponder()
// Do any additional stuff here
return false
}
return true
}