I have an app that has a username and password field. I want to validate the input before the the user is allowed to stop editing the field. To do that, I'm using the textFieldShouldEndEditing delegate method. If the input doesn't validate I display a UIAlertView.
This approach works as advertised - the user cannot leave the field if the input doesn't validate.
To have the done button on the keyboard dismiss the keyboard, I call resignFirstResponder on the textfield.
The issue I have is the alert is being called twice. How do I keep the alert from showing twice?
edit for clarification
What is happening is that the alert appears, then another alert appears. I then have to dismiss both windows to fix the input.
Here is the textFieldShouldEndEditing method
-(BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
NSLog(@"function called %@",textField);
if([textField.text length] == 0)
{
return YES;
}
if(textField == userName)
{
if([self userNameValidated:textField.text])
{
NSLog(@"name validated");
NSString *tempDonerName = [[NSString alloc] initWithString:(@"%@",userName.text)];
//[[NSUserDefaults standardUserDefaults] setObject:tempDonerName forKey:@"name"];
[tempDonerName release];
return YES;
} else {
NSLog(@"name did not validate");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Invalid Username",@"Invalid Username title")
message:NSLocalizedString(@"Please make sure there are no apostrophes,spaces in the username, and that the username is less than 12 characters",@"Invalid username message")
delegate:nil
cancelButtonTitle:NSLocalizedString(@"OK",@"OK Text")
otherButtonTitles:nil];
[alert show];
[alert release];
return NO;
}
} else if (textField == userPin) {
if([self userPinValidated:textField.text])
{
NSLog(@"pin validated");
//NSString *tempDonerPin = [[NSString alloc] initWithString:(@"%@",userPin.text)];
//[[NSUserDefaults standardUserDefaults] setObject:tempDonerPin forKey:@"pin"];
//[tempDonerPin release];
return YES;
} else {
NSLog(@"pin did not validate");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Invalid Password",@"Invalid Pin title")
message:NSLocalizedString(@"Please make sure there are no apostrophes in the password",@"Invalid password message")
delegate:nil
cancelButtonTitle:NSLocalizedString(@"OK",@"OK Text")
otherButtonTitles:nil];
[alert show];
[alert release];
return NO;
}
}else {
NSLog(@"code validate - shouldn't get called");
return YES;
}
}
