ios 点击 UITextField 的清除按钮隐藏键盘而不是清除文本
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Tap on UITextField's clear button hides keyboard instead of clearing text
提问by Mad
In iPhone, I have a view which has a UITextField. When I tap on the clear button of UITextField's the keyboard dismissed instead of clearing the text in the UITextField. On an iPad it is working correctly. What can I do to fix this?
在 iPhone 中，我有一个视图，其中包含UITextField. 当我点击UITextField's的清除按钮时，键盘关闭而不是清除UITextField. 在 iPad 上它工作正常。我能做些什么来解决这个问题？
回答by Himanshu padia
Just clear the field, resignFirstResponder(if you want to hide keyboard) and return NO/false
只需清除该字段，resignFirstResponder（如果您想隐藏键盘）并返回NO/false
Note: set Attributes inspector property of UITextField
注意：设置属性检查器属性 UITextField
Clear Button -> Appears while editing
清除按钮 -> 编辑时出现
so it will display the clear button while editing in the text field.
所以它会在文本字段中编辑时显示清除按钮。
// Objective-C
// 目标-C
-(BOOL)textFieldShouldClear:(UITextField *)textField
{
textField.text = @"";
[textField resignFirstResponder];
return NO;
}
// Swift
// 斯威夫特
func textFieldShouldClear(textField: UITextField) -> Bool {
textField.text = ""
textField.resignFirstResponder()
return false
}
回答by Ajay Malviya
Try this code after you attach delegate of uitextifield
在附加 uitextifield 的委托后尝试此代码
-(BOOL)textFieldShouldClear:(UITextField *)textField
{
return true;
}
回答by Shamsudheen TK
First, check all the code blocks that related to your UITextField(especially the code yourTextField.hidden = YES;)
首先，检查与您的UITextField（尤其是代码yourTextField.hidden = YES;）相关的所有代码块
Put break points and analyze every UITextFielddelegates that you implemented.
放置断点并分析UITextField您实现的每个委托。
(textFieldDidEndEditing,textFieldShouldEndEditing,textFieldShouldReturn.etc.)
( textFieldDidEndEditing, textFieldShouldEndEditing, textFieldShouldReturn.etc.)
OR
或者
Implement the textFieldShouldCleardelegate and write the code here to visible and clear your UITextField
实现textFieldShouldClear委托并在此处编写代码以显示和清除您的UITextField
To do this, you have to set the clearButtonModeas below,
为此，您必须设置clearButtonMode如下，
yourTextField.clearButtonMode = UITextFieldViewModeWhileEditing;
yourTextField.delegate = self;
//For active keyboard again
[yourTextField becomeFirstResponder];
Then implement the textFieldShouldCleardelegate
然后实现textFieldShouldClear委托
YourClass.h
你的课堂.h
@interface className : UIViewController <UITextFieldDelegate>
YourClass.m
你的课堂.m
-(BOOL)textFieldShouldClear:(UITextField *)textField {
yourTextField.hidden = NO;
yourTextField.text = @"";
return YES;
}
回答by Sj.
Just make sure U've given these two
只要确保你已经给了这两个
editingTextField.delegate = self;
editingTextField.clearButtonMode = UITextFieldViewModeWhileEditing;
TextFieldShouldClearis needed only if you need to do some customizations :-)
仅当您需要进行一些自定义时才需要TextFieldShouldClear:-)
Are you doing some thing in this method?
你在用这个方法做些什么吗？
Maybe you are are calling resignFirstResponder in this delegate method, thats why the keyboard is getting dismissed.
也许您正在此委托方法中调用 resignFirstResponder，这就是键盘被关闭的原因。
Please go through the delegate methods, and check what u r doing exactly.
请仔细检查委托方法，并检查您在做什么。
回答by Alessandro Ornano
This issue happened also if you have
如果你有这个问题也会发生
yourTextField.clearButtonMode = UITextFieldViewModeNever;
Check this line and delete it or change view mode..
检查此行并将其删除或更改视图模式..
