title: Change View in UIScrollView with NSTimer
body: <p>I am using the following code in order to create a <code>UIScrollView</code>:</p>
  
  <pre><code>UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
  scroll.pagingEnabled = YES;
  NSInteger numberOfViews = 3;
  for (int i = 0; i &lt; numberOfViews; i++) {
  
      CGFloat yOrigin = i * self.view.frame.size.width;
      UIView *awesomeView = [[UIView alloc] initWithFrame:CGRectMake(yOrigin, 0, self.view.frame.size.width, self.view.frame.size.height)];
      awesomeView.backgroundColor = [UIColor colorWithRed:0.5/i green:0.5 blue:0.5 alpha:1];
      [scroll addSubview:awesomeView];
  
  }
  
  scroll.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews, self.view.frame.size.height);
  
  [self.view addSubview:scroll];
  </code></pre>
  
  <p>The Question is: How do I implement an <code>NSTimer</code> in order to change the page every 4 seconds? </p>
  
  <pre><code>    [NSTimer scheduledTimerWithTimeInterval:4.0f
                                   target:self
                                 selector:@selector(updateCounter:)
                                 userInfo:nil
                                  repeats:YES];
  </code></pre>
  
  <p>I am struggling to write the updateCounter method. Please help</p>
  
  <pre><code>- (void)updateCounter:(NSTimer *)theTimer {
   NSInteger numberOfViews = 3;
       int i = 0; i++;
       if (i &lt; numberOfViews) {
  
      yOrigin = i * self.view.frame.size.width;
      [scroll scrollRectToVisible:CGRectMake(yOrigin, 0, self.view.frame.size.width,      self.view.frame.size.height) animated:YES];
  }
  
  return; }
  </code></pre>
  
  <p>OK, so with this code, <code>NSTimer</code> changes from <em>view 1</em> to <em>view 2</em>, but it stops, it does not change after the next 4 seconds to <em>view 3</em>. What I want to do is to change from <em>view 1</em>, to <em>view</em> 2, after 4 seconds, then to <em>view 3</em>, after 4 seconds, and so on. I want to have as many views as I need.</p>