Will的部落格

UIPageControl用於提示此用者此頁面有多重顯示，

此元件的行為類似翻頁的動作，本範例為放置三張圖片，

滑動頁面與點擊UIPageControl替換圖片顯示，

並添加一個UIViewAnimationOptionTransitionFlipFromRight動畫效果。

#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIPageControl *myPageControl;
@property (weak, nonatomic) IBOutlet UIImageView *myImage;
- (IBAction)pageChanged:(UIPageControl*)sender;
- (IBAction)swipeAction:(UISwipeGestureRecognizer *)sender;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)pageChanged:(UIPageControl*)sender {
    
    _myImage.image = [UIImage imageNamed:[NSString stringWithFormat:@"photo%ld.jpg",sender.currentPage+1]];
    
}

- (IBAction)swipeAction:(UISwipeGestureRecognizer *)sender {
    
    if (sender.direction == UISwipeGestureRecognizerDirectionLeft) {
        _myPageControl.currentPage++;
        
        [UIView transitionWithView:_myImage duration:0.5f options:UIViewAnimationOptionTransitionFlipFromRight 
        animations:^{_myImage.image = [UIImage imageNamed:[NSString stringWithFormat:@"photo%ld.jpg",_myPageControl.currentPage+1]];} completion:nil];
        
    }else{
        _myPageControl.currentPage--;
        
        [UIView transitionWithView:_myImage duration:0.5f options:UIViewAnimationOptionTransitionFlipFromLeft 
        animations:^{_myImage.image = [UIImage imageNamed:[NSString stringWithFormat:@"photo%ld.jpg",_myPageControl.currentPage+1]];} completion:nil];
   
    }
    
}
@end