iOSのタイマーでUIScrollViewをスワイプ

Question

3ページで表ビュー内にスクロールビューをレンダリングする次のコードがあります。ページを5秒ごとに変更したいのですが、どうすればいいですか？

 UITableViewCell *cell; 

     cell = [tableView dequeueReusableCellWithIdentifier: sliderIdentifier]; 
     if (!cell) { 
      cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:sliderIdentifier]; 
     } 

     if (sliderItems != nil && sliderItems.count > 0) { 

      UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0,self.view.frame.size.width, 200)]; 
      scroll.scrollEnabled = YES; 

      for (int i = 0; i < sliderItems.count ; i++) { 
       CGFloat xOrigin = i * self.view.frame.size.width; 

       UIImageView *awesomeView = [[UIImageView alloc] initWithFrame:CGRectMake(xOrigin, 0, self.view.frame.size.width, 200)]; 

       ItemResponse *test = [ItemResponse new]; 
       test = sliderItems[i]; 

       dispatch_queue_t concurrentQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); 
       //this will start the image loading in bg 
       dispatch_async(concurrentQueue, ^{ 

        NSString *urlStr = test.listingImage; 
        NSURL *imageUrl = [NSURL URLWithString:urlStr]; 
        NSData *imageData = [NSData dataWithContentsOfURL:imageUrl]; 
        //this will set the image when loading is finished 
        dispatch_async(dispatch_get_main_queue(), ^{ 
         awesomeView.image = [UIImage imageWithData:imageData]; 
         [scroll addSubview:awesomeView]; 

         UILabel *iconAdLabel = [[UILabel alloc]init]; 
         iconAdLabel.frame = CGRectMake(0 + (i * self.view.frame.size.width),130,self.view.frame.size.width,70); 
         iconAdLabel.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; 
         NSString *titleStr = [NSString stringWithFormat:@" %@ ", test.listingTitle]; 
         iconAdLabel.text = titleStr; 
         UIColor *color = [self getUIColorObjectFromHexString:@"#000000" alpha:0.6]; 
         iconAdLabel.backgroundColor = color; 
         UIColor *textcolor = [self getUIColorObjectFromHexString:@"#ffffff" alpha:1.0]; 
         iconAdLabel.textColor = textcolor; 
         iconAdLabel.textAlignment = NSTextAlignmentRight; 
         UIFont *font=[UIFont fontWithName:@"NotoKufiArabic" size:14.0f]; 
         iconAdLabel.font = font; 
         iconAdLabel.numberOfLines = 2; 

         [scroll addSubview:iconAdLabel]; 
        }); 
       }); 

      } 

      scroll.contentSize = CGSizeMake(self.view.frame.size.width * sliderItems.count , 200); 
      dispatch_queue_t concurrentQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); 
      //this will start the image loading in bg 
      dispatch_async(concurrentQueue, ^{ 
       dispatch_async(dispatch_get_main_queue(), ^{ 
        [self.view addSubview:scroll]; 
       }); 
      }); 
     } 

     return cell; 

Answer 1

あなたが行動

-(void)timerAction 
{ 
    [scroll scrollRectToVisible:CGRectMake(x, y, width, height) animated:YES]; 
} 

でNSTimerオブジェクト

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(timerAction) userInfo:nil repeats:YES]; 

を使用することができます。また、あなたはViewControllerをが消えると、タイマーオブジェクトを無効にする必要があります。したがって、複数のセルがある場合は、NSArrayを使用してタイマーオブジェクトを追跡し、不要になったときに無効にします。[timer invalidate]