2

I create custom login page by using UIAlerView subclass. Now when i click on button it opens up UIAlertView I want to change the main view based on which button is pressed.

But as all implementation of UIAlerView is in another class though i change the view it doesn't retain that as that class variable doesn't get it's value.

Can anyone please help me with this? I can post the code if required.

Thank you, Ankita

Mac
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2 Answers2

1

You can use a custom init method like below for alertView and store the _sender in global or class variable. like

id sender;
- (id)initWithSender:(id)_sender
{
    self = [super init];
    if (self) {
        sender=_sender;
    }
    return self;
}

from RootVC/bgview initialize alertView as follows and define a method named 

-(void) alertIndexSelected:(NSInterger) index;


{



//change the backgound view based on button selected
}
in rootvc/your main view. 
  alertViewobj =[[alertView alloc] initWithSender:self];

when the button is selected on alertview call the below method, this will notify your rootvc about which index of alert is pressed. use following alertview delegate.

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[sender alertIndexSelected: buttonIndex];
}
pradeepa
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1

If you are planning to use delegate methods then I think you need to referrer to some of these links.

How to use custom delegates in Objective-C

How do I create delegates in Objective-C?

http://iosdevelopertips.com/objective-c/the-basics-of-protocols-and-delegates.html

I hope this will help you a great deal in understanding delegates.

Cœur
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Robin
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