如何将文本字段添加到警报视图？Xcode 4.5 iOS6

Question

如何在alertview中添加文本字段？我正在尝试做一个应用程序,在应用程序提交编辑之前,用户必须通过在所述alertview上键入他/她的密码来验证第一,但我该怎么做？似乎我搜索的代码不再起作用了.这里是:

  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Log In" message:@"Please enter your Password" delegate:self cancelButtonTitle:@"Log In" otherButtonTitles:@"Cancel", nil];
    [alert addTextFieldWithValue:@"" label:@"Password"];
    UITextField *tf = [alert textFieldAtIndex:0];
    tf.clearButtonMode = UITextFieldViewModeWhileEditing;
    tf.keyboardType = UIKeyboardTypeAlphabet;
    tf.keyboardAppearance = UIKeyboardAppearanceAlert;
    tf.autocapitalizationType = UITextAutocapitalizationTypeWords;
    tf.autocapitalizationType = UITextAutocorrectionTypeNo;

错误说

 "No visible @interface for 'UIAlertView' 
 declares the selector 'addTextFieldWithValue:label:'" 
 on the [alert addTextFieldWithValue:@"" label:@"Password"];

我还想问一下如何将代码放在alertview上的Confirm按钮上.

Answer 1

alert.alertViewStyle = UIAlertViewStylePlainTextInput;

或者如果您需要它是安全的(用于密码)

alert.alertViewStyle = UIAlertViewStyleSecureTextInput;

编辑:

我不是100%肯定你的意思是"把代码放在确认按钮上",但如果你想知道他们是推送确认还是取消,你只需要实现

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    //check the button index and do something if it's the right one.
}