在UIAlertView中更改UITextField的键盘类型 [英] Change the keyboard type of UITextField in UIAlertView

问题描述

我创建了一个UIAlertView，其 alertViewStyle 设置为 UIAlertViewStylePlainTextInput 。

I created a UIAlertView with its alertViewStyle set to UIAlertViewStylePlainTextInput.

我想更改键盘类型，但不是通过添加子视图。

I want to change the keyboard type, but not by adding a subview.

我的代码：

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"a" message:@"b" delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:@"aaa", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;  
[alert show];

推荐答案

如果你想呈现输入风格，首先是所有都在你的班级实现 UIAlertViewDelegate 。

If You want to present the Input Style, First of all implement the UIAlertViewDelegate in your class.

其次，当您呈现alertView时，将委托设置为self。

Secondly when you presenting the alertView set the delegate to self.

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"a" message:@"b" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"aaa", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;  
[alert show];'

如果要更改特定字段的键盘类型那么这样做

If you want to change the keyboard type for particular field then do like this

例如对于第一个字段，它会使键盘数字化。

e.g for 1st field, it will make the keyboard numeritc.

[[alert textFieldAtIndex:0] setKeyboardType:UIKeyboardTypeNumberPad];
[[alert textFieldAtIndex:0] becomeFirstResponder];

iOS 8.0 Swift的更新

从ios 8.0开始 UIAlertView 已弃用，因此您可能需要使用 UIAlertController

From ios 8.0 onward UIAlertView is deprecated so you might need to use UIAlertController

 var alert = UIAlertController(title: "Title", message: "Your msg", 
                preferredStyle: UIAlertControllerStyle.Alert)

        alert.addAction(UIAlertAction(title: "Close", style: UIAlertActionStyle.Cancel, 
              handler:yourHandler))

        alert.addTextFieldWithConfigurationHandler({(textField: UITextField!) in
            textField.placeholder = "Password"
            textField.secureTextEntry = true  // setting the secured text for using password
            textField.keyboardType = UIKeyboardType.Default
        })

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