我有一个简单的问题,我希望你们能帮助我回答.现在我在故事板中有一个UIPageControl根据你所在的点改变图像,但是,到现在你必须按下点来改变点/图像,我怎样才能改变图像/点通过刷？
这是我的.h的代码
#import <UIKit/UIKit.h> @interface PageViewController : UIViewController @property (strong,nonatomic) IBOutlet UIImageView *dssview; - (IBAction)changephoto:(UIPageControl *)sender; @end
这是我的.m的代码
#import "PageViewController.h"
@interface PageViewController ()
@end
@implementation PageViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)changephoto:(UIPageControl *)sender {
_dssview.image = [UIImage imageNamed:
[NSString stringWithFormat:@"%d.jpg",sender.currentPage+1]];
}
@end
任何帮助将不胜感激.
谢谢
解决方法
您可以根据更新UIPageControl对象的方向将UISwipeGestureRecognizer添加到视图和UISwipeGestureRecognizer的选择器方法中,或者递增当前页面或递减.
UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)]; swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft; [self.view addGestureRecognizer:swipeLeft]; UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)]; swipeRight.direction = UISwipeGestureRecognizerDirectionRight; [self.view addGestureRecognizer:swipeRight];
滑动手势选择器
- (void)swipe:(UISwipeGestureRecognizer *)swipeRecogniser
{
if ([swipeRecogniser direction] == UISwipeGestureRecognizerDirectionLeft)
{
self.pageControl.currentPage -=1;
}
else if ([swipeRecogniser direction] == UISwipeGestureRecognizerDirectionRight)
{
self.pageControl.currentPage +=1;
}
_dssview.image = [UIImage imageNamed:
[NSString stringWithFormat:@"%d.jpg",self.pageControl.currentPage]];
}
Add an outlet to the UIPageControl in the .h file
@interface PageViewController : UIViewController @property (strong,nonatomic) IBOutlet UIImageView *dssview; @property (strong,nonatomic) IBOutlet UIPageControl *pageControl; - (IBAction)changephoto:(UIPageControl *)sender; @end
