ios Xcode 4.2 按下“完成/返回”按钮时如何隐藏文本框键盘
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How to hide Textbox Keyboard when "Done / Return" Button is pressed Xcode 4.2
提问by Talon
I created a Text Field in Interface Builder. I set it's "Return Key" to Done. This is a one line only input (so it wont need multiple lines).
我在 Interface Builder 中创建了一个文本字段。我将它的“返回键”设置为完成。这是一个只有一行的输入（所以它不需要多行）。
How do I hide the virtual keyboard when the user taps the done button?
当用户点击完成按钮时如何隐藏虚拟键盘？
回答by Paul Hunter
Implement the delegate method UITextFieldDelegate, then:
实现委托方法UITextFieldDelegate，然后：
- (void)viewDidLoad {
[super viewDidLoad];
self.yourIBtextField.delegate = self;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return NO;
}
回答by Himanshu padia
UITextView does not have any methods which will be called when the user hits the return key.
UITextView 没有任何方法可以在用户点击返回键时调用。
Even then if you want to do this, implement the textView:shouldChangeTextInRange:replacementText: method of UITextViewDelegate and in that check if the replacement text is \n, hide the keyboard.
即使这样，如果您想这样做，请实现 UITextViewDelegate 的 textView:shouldChangeTextInRange:replacementText: 方法，并在该方法中检查替换文本是否为 \n，隐藏键盘。
There might be other ways but I am not aware of any.
可能还有其他方法，但我不知道任何方法。
Make sure you declare support for the UITextViewDelegate protocol.
确保声明对 UITextViewDelegate 协议的支持。
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range
replacementText:(NSString *)text {
if([text isEqualToString:@"\n"]) {
[textView resignFirstResponder];
return NO;
}
return YES;
}
I hope it will helps a lot.
我希望它会很有帮助。
回答by ixi
Make category on UIViewController with next method
使用 next 方法在 UIViewController 上创建类别
- (void)hideKeyboard
{
[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder)
to:nil
from:nil
forEvent:nil];
}
