FLEX/Example/UICatalog/AAPLPageControlViewController.m

/*
        File: AAPLPageControlViewController.m
    Abstract: A view controller that demonstrates how to use UIPageControl.
     Version: 2.12
    
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*/

#import "AAPLPageControlViewController.h"

@interface AAPLPageControlViewController ()

@property (nonatomic, weak) IBOutlet UIPageControl *pageControl;

@property (nonatomic, weak) IBOutlet UIView *colorView;
@property (nonatomic) NSArray *colors;

@end


#pragma mark -

@implementation AAPLPageControlViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Set a list of colors that correspond to the selected page.
    self.colors = @[UIColor.blackColor, UIColor.grayColor, UIColor.redColor, UIColor.greenColor, UIColor.blueColor, UIColor.cyanColor, UIColor.yellowColor, UIColor.magentaColor, UIColor.orangeColor, UIColor.purpleColor];

    [self configurePageControl];
    [self pageControlValueDidChange];
}


#pragma mark - Configuration

- (void)configurePageControl {
    // The total number of pages that are available is based on how many available colors we have.
    self.pageControl.numberOfPages = self.colors.count;
    self.pageControl.currentPage = 2;

    self.pageControl.tintColor = UIColor.aapl_applicationBlueColor;
    self.pageControl.pageIndicatorTintColor = UIColor.aapl_applicationGreenColor;
    self.pageControl.currentPageIndicatorTintColor = UIColor.aapl_applicationPurpleColor;

    [self.pageControl addTarget:self action:@selector(pageControlValueDidChange) forControlEvents:UIControlEventValueChanged];
}


#pragma mark - Actions

- (void)pageControlValueDidChange {
    NSLog(@"The page control changed its current page to %ld.", (long)self.pageControl.currentPage);

    self.colorView.backgroundColor = self.colors[self.pageControl.currentPage];
}

@end