Delegation

I am also learning so take my advice with a grain of salt. If you are asking about delegates I assume that you have never worked with a UITableView. You need to work with delegates in order to make TableViews work.

I would read up on TableView Doc's and learn to work with them before you jump into a bigger project.

Start small.

 

Protocols :

http://developer.apple.com/library/...nceptual/ObjectiveC/Chapters/ocProtocols.html

This is the simplest tutorial I've found on how to use them :

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

 

I'm new to programming too, but I have done a checklist app. Keep in mind that i used interface builder and do not know how storyboard works. What I did was in the nsmutablearray that my table is reading the data from. Each entry of the array is a namutabledictionary with two keys, name and completed. Under completed, I use the [NSNumber numberWithBOOL:] to indicate whether the entry has been completed. Now in the table view data source, under cellForRowAtIndexPath, I have the view controller check for the number under the key completed. If it's 1 (BOOL value Yes], write a code to add checkmark to the row. Now, all you have to do is pass along the dictionary of the question to your modal view in a custom init method. If the user answers the question correctly, change the value under the key completed to [NSNumber numberWithBOOL: YES], then when the modal view is dismissed, put [tableView reloadData] under viewWillAppear for the table view controller. I hope that helps.

 

First of all, how do you pass along the question from your tableview to your modal view? what I did with my checklist app was this. By default, a view controller has the method:

Code:

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    }
    return self;
}

If you view controller doesn't have it, you can just copy and pate that code. Now, I simply modify the code to look like this:

Code:

- (id)initWithNibName:(NSString *)nibNameOrNil forQuestion:(NSMutableDictionary *)question bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.selectedQuestion = question;
    }
    return self;
}

and add - (id)initWithNibNameNSString *)nibNameOrNil forQuestionNSMutableDictionary *)question bundleNSBundle *)nibBundleOrNil; to my .h file. Now, in the table's view controller, under didSelectRowAtIndexPath, use the indexPath to find the appropriate question (which is an NSMutableDictionary), and use the method I just made to initialize the modal view controller.

When the user answers the question correctly, simply use this line of code:

Code:

[self.selectedQuestion setValue:[NSNumber numberWithBool:YES] forKey:@"completed"];
[self dismissModalViewControllerAnimated:YES];

Add [tableView reloadData] to your viewWillAppear of the table's View Controller, and you should be good to go.

 

Your Question controller signals the tableview controller with a BOOL value for the question answered.

Protocols permit calling implemented methods in the delegate. Set your tableview controller as a delegate of the Question view controller. Create a protocol in the Question view controller that the tableview controller implements.

Then it's a simple matter of calling it from the question view controller :

Code:

[[self delegate] answerWasRight: YES];

This is exactly what Protocols are for.

You can then implement answerWasRight: (BOOL) rightorwrong as you see fit (it can update the table view with a red X or green Check depending on the BOOL value if that is what you want).

Read the 2nd link in my first post. It's a downright simple tutorial on how to implement exactly this functionality.