How to make the UIAlertView call itself again?

Question

Below is the scenario.

I have created a UIAlertView in viewDidLoad of the Controller in which I display the Alert.

loginAlert = [[UIAlertView alloc] initWithTitle:@"Check"
                                            message:@"Ok"
                                           delegate:nil
                                  cancelButtonTitle:@"Ok"
                                  otherButtonTitles:nil, nil];
[loginAlert setAlertViewStyle:UIAlertViewStyleSecureTextInput];

I call it as [alert show] and it is displayed.

When user press Ok, it goes to textEndEditing delegate method and from if nil/worng value was entered, I call [alert show] again.

- (void)textFieldDidEndEditing:(UITextField *)textField
{
if ([textField.text length] > 0)
{

}
else
{
 NSLog(@"Checking");
 [loginAlert show];
}
}

But its not displayed again. Please tell me what to do?

give some code. cant understand exactly what you are upto – Durgaprasad May 16 '13 at 09:15 — Durgaprasad, May 16 '13 at 09:15
do you have your UIAlertView object class level? – Harshal Chaudhari May 16 '13 at 09:17 — Harshal Chaudhari, May 16 '13 at 09:17

score 3 · Answer 1 · answered May 16 '13 at 09:27

Instead of delegate:nil, put delegate:self

loginAlert = [[UIAlertView alloc] initWithTitle:@"Check"
                                            message:@"Ok"
                                           delegate:self
                                  cancelButtonTitle:@"Ok"
                                  otherButtonTitles:nil, nil];
[loginAlert setAlertViewStyle:UIAlertViewStyleSecureTextInput];

score 1 · Accepted Answer · answered May 16 '13 at 09:37

First change your alert view delegate to self.

loginAlert = [[UIAlertView alloc] initWithTitle:@"Check"
                                        message:@"Ok"
                                       delegate:self
                              cancelButtonTitle:@"Ok"
                              otherButtonTitles:nil, nil];
[loginAlert setAlertViewStyle:UIAlertViewStyleSecureTextInput];

[loginAlert show];

Then in the alert view delegate method check the length of the text and show the the alert again if empty.

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex{
    if (buttonIndex == 0) {
        if ([[loginAlert textFieldAtIndex:0].text length] > 0)
        {

        }
        else
        {
            NSLog(@"Checking");
            [loginAlert show];
        }
    }
}

This one works perfectly for my requirements. I guess I overdid things a bit and ended up in textfield delegate method and all. — wolverine, May 16 '13 at 11:29

score 0 · Answer 3 · edited May 23 '17 at 12:20

Try this:

loginAlert = [[UIAlertView alloc] initWithTitle:@"Check"
                                        message:@"Ok"
                                       delegate:self
                              cancelButtonTitle:@"Ok"
                              otherButtonTitles:nil, nil];
[loginAlert setAlertViewStyle:UIAlertViewStyleSecureTextInput]; 


- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex{
    if (buttonIndex == 0) {
        [yourTextField resignFirstResponder];
    }
}

- (void)textFieldDidEndEditing:(UITextField *)textField {
    if (textField==yourTextField) {
        if ([yourTextField.text isEqualToString:@""] || yourTextField.text == nil) {
            [yourAlert show];
        }
    }
}

Also see this for your problem:

Dharmbir Singh · Answer 4 · 2013-05-16T09:54:40.333

0

Set delegate self instead of nil and implement my code.

    loginAlert = [[UIAlertView alloc] initWithTitle:@"Check"
                                                message:@"Ok"
                                               delegate:self
                                      cancelButtonTitle:@"Ok"
                                      otherButtonTitles:nil, nil];
    [loginAlert setAlertViewStyle:UIAlertViewStyleSecureTextInput]; 



 - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
     {
        if(buttonIndex == 0)
        {
            [self.view endEditing:YES];
        }
    }

edited May 16 '13 at 09:54

answered May 16 '13 at 09:26

Dharmbir Singh

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@hitesh what do you mean ? – Dharmbir Singh May 16 '13 at 09:50
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex; – hitesh May 16 '13 at 09:54

score 0 · Answer 5 · answered May 16 '13 at 09:28

How about making it simple .. ?

- (void)textFieldDidEndEditing:(UITextField *)textField
{
if ([textField.text length] > 0)
{

}
else
{
 NSLog(@"Checking");
 loginAlert = [[UIAlertView alloc] initWithTitle:@"Check"
                                            message:@"Ok"
                                           delegate:self
                                  cancelButtonTitle:@"Ok"
                                  otherButtonTitles:nil, nil];
[loginAlert setAlertViewStyle:UIAlertViewStyleSecureTextInput]; 
 [loginAlert show];
}
}

score 0 · Answer 6 · answered May 18 '13 at 07:16

   -(void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex{
  if (buttonIndex == 0) 
    {
       // Your code write in this method and show your alert 
    }
   else
   {
        [loginalert show];
   }
}

i hope this code useful for you.

How to make the UIAlertView call itself again?

6 Answers6