Retrieving the value from UIAlertView textbox in iOS app - ios

Question

I have an iOS app that I recently updated to deal with the UIAlertView / SubView issue that causes the textboxes to render as clear or white (or not render at all, not sure which). In any case, this is a relatively simple question as I'm kind of new to Obj-C, but how do I get the value of the new textbox from another call in the app?
Here is my UIAlertView:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Password"
message:#"Enter your Password\n\n\n"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Login", nil];
alert.frame = CGRectMake( 0, 30, 300, 260);
It used to be stored as a UITextField, and then added to the UIAlertView as a subview:
psswdField = [[UITextField alloc] initWithFrame:CGRectMake(32.0, 65.0, 220.0, 25.0)];
psswdField.placeholder = #"Password";
psswdField.secureTextEntry = YES;
psswdField.delegate = self;
psswdField.tag = 1;
[psswdField becomeFirstResponder];
[alert addSubview:psswdField];
[alert show];
[alert release];
This is all commented out now, and instead I have it rewritten as:
alert.alertViewStyle = UIAlertViewStyleSecureTextInput;
This is how I used to retrieve the value:
[psswdField resignFirstResponder];
[psswdField removeFromSuperview];
activBkgrndView.hidden = NO;
[activInd startAnimating];
[psswdField resignFirstResponder];
[self performSelectorInBackground:#selector(loadData:) withObject:psswdField.text];
Now I'm a bit confused as to how I get the value from that textbox to send to loadData.

Answer 1

You don't want to add your own text field to the alert view. You're not supposed to directly add subviews to a UIAlertView. There is an alertViewStyle property on UIAlertView that you want to set to UIAlertViewStyleSecureTextInput, which will add a text field for you. So you would set it with a line like this:
alert.alertViewStyle = UIAlertViewStyleSecureTextInput;
Then you will retrieve the value in this text field using the delegate method - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex, which you must add to the class that you're setting as your UIAlertView delegate. Here is an example implementation of that delegate method:
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
// Make sure the button they clicked wasn't Cancel
if (buttonIndex == alertView.firstOtherButtonIndex) {
UITextField *textField = [alertView textFieldAtIndex:0];
NSLog(#"%#", textField.text);
}
}