ios 如何获得 UITextField 点击事件？
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How to get UITextField Tap Event?
提问by Azhar
I am trying to show UIAlertView on Tap or Click of UITextField for both IPad and IPhone. I make an IBAction and Attach it with Tap Down event of UITextField.
我正在尝试在 iPad 和 iPhone 的 UITextField 的 Tap 或 Click 上显示 UIAlertView。我制作了一个 IBAction 并使用 UITextField 的 Tap Down 事件附加它。
But its not working correctly, means not always, in case of iphone and not working in-case of iPad
但它不能正常工作，意味着并非总是如此，在 iPhone 的情况下，而不是在 iPad 的情况下工作
- (IBAction) TopuchState
{
//function code
}
please help How could I do this.
请帮助我怎么能做到这一点。
回答by Lucien
As you are already subscribed to be UITextField delegate, implement this method:
由于您已经订阅了 UITextField 委托，请实现此方法：
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"Alert Message" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Ok", nil];
[alert show];
return YES;
}
回答by J Max
Try adding a target for when a particular text field begins editing (UIControlEventEditingDidBegin):
尝试添加特定文本字段开始编辑时的目标 ( UIControlEventEditingDidBegin)：
[textField1 addTarget:delegate action:@selector(textField1Active:) forControlEvents:UIControlEventEditingDidBegin];
回答by jaiswal Rajan
In Swift 3
在斯威夫特 3
Add a target for a particular text field for the event .editingDidBegin in viewDidLoad method
在 viewDidLoad 方法中为事件 .editingDidBegin 添加特定文本字段的目标
self.textField.addTarget(self, action: #selector(textFieldTouched(_:)), for: UIControlEvents.editingDidBegin)
func textFieldTouched(textField: UITextField) {
//Show AlertView
}
回答by Zalykr
I think it's easier if you set the delegate for the UITextFieldand implement the method:
我认为如果您为 设置委托UITextField并实现该方法会更容易：
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
then inside that method you can easily create and show your UIAlertView.
然后在该方法中，您可以轻松创建并显示您的UIAlertView.
Take a look at UITextFieldDelegate.
Good luck!
祝你好运！
回答by Shubham Maheshwari
Connect TextField with delegate and Now calling this function!!
将 TextField 与委托连接，现在调用这个函数！！
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
textView.text=@" ";
return YES;
}
