How to customize the content of each page using Page Control and UIScrollView?

Question

I have problem with customizing each page using pagecontrol and UIScrollView. I'm customizing Page Control from Apple.

Basically I would like to have each page different with text and image alternately on different page. Page 1 will have all text, Page 2 will have just images, Page 3 will have all text and goes on.

This is original code:

    // Set the label and background color when the view has finished loading.
    - (void)viewDidLoad {
        pageNumberLabel.text = [NSString stringWithFormat:@"Page %d", pageNumber + 1];
        self.view.backgroundColor = [MyViewController pageControlColorWithIndex:pageNumber];
}

As you can see, this code shows only Page 1, Page 2 etc as you scroll right.

I tried to put in this new code but that didn't make any difference. There's no error. I know this is pretty simple code. I don't why it doesn't work.

I declare pageText as UILabel.

// Set the label and background color when the view has finished loading.
- (void)viewDidLoad {
    pageNumberLabel.text = [NSString stringWithFormat:@"Page %d", pageNumber + 1];
    self.view.backgroundColor = [MyViewController pageControlColorWithIndex:pageNumber];
    if (pageNumber == 1) {
        pageText.text = @"Text in page 1";
    }
    if (pageNumber == 2) {
            pageText.text = @"Image in page 2";
    }
    if (pageNumber == 3) {
            pageText.text = @"Text in page 3";
    }

}

I don't know why it doesn't work. Also if you have better way to do it, let me know. Thanks.

Answer 1

I downloaded the sample, added the following lines to the MyViewController.h

IBOutlet UILabel *pageText;

@property (nonatomic, retain) UILabel *pageText;

In the MyViewController.m I added the @synthesize pageText; line and your viewDidLoad contents.

I opened the MyView.xib/en file in interface builder and connected the new label. Compiled and ran and it worked for the most part. Only thing that didn't seem right was that it was a page behind. so I rewrote it to just handle odd or even pages appropriately.

- (void)viewDidLoad {
    pageNumberLabel.text = [NSString stringWithFormat:@"Page %d", pageNumber + 1];
    self.view.backgroundColor = [MyViewController pageControlColorWithIndex:pageNumber];
    if (pageNumber % 2) {
        pageText.text = [NSString stringWithFormat:@"Image in page %d", pageNumber + 1];
    } else {
        pageText.text = [NSString stringWithFormat:@"Text in page %d", pageNumber +1];
    }   
}