Change the keyboard type of UITextField in UIAlertView [closed]

Question

I created a UIAlertView with its alertViewStyle set to UIAlertViewStylePlainTextInput.

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

My Code：

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

Answer 1

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

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];'

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

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

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

UPDATE for iOS 8.0 Swift

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
        })