title: UIScrollView with contentsize set can't scroll beyond frame boundary
body: <p>I Feel like I'm missing something super obvious here.</p>
  
  <p>I have a UIScrollView in a storyboard, with a outlet to the view controller.</p>
  
  <p>I programatically add a series of views, and set the content size of the scroll view.</p>
  
  <p>Even though I've set the scrollview's contentsize height to a very high value, I can't scroll beyond the views bounds.</p>
  
  <p>I'm printing the content size and frame size after setting it. As well as the contentoffset.y when the scrollview scrolls.</p>
  
  <p>Here is an example of the console output:</p>
  
  <pre><code>2013-09-24 21:54:34.531 [Redacted] scrollView frame size: 320.000000,460.000000
  2013-09-24 21:54:34.531 [Redacted] scrollView content size: 0.000000,10000.000000
  2013-09-24 21:54:36.259 [Redacted] scroll to: 6.000000
  2013-09-24 21:54:36.275 [Redacted] scroll to: 17.000000
  2013-09-24 21:54:36.291 [Redacted] scroll to: 29.000000
  2013-09-24 21:54:36.308 [Redacted] scroll to: 41.000000
  2013-09-24 21:54:36.325 [Redacted] scroll to: 52.000000
  2013-09-24 21:54:36.341 [Redacted] scroll to: 65.000000
  2013-09-24 21:54:36.358 [Redacted] scroll to: 74.000000
  2013-09-24 21:54:36.375 [Redacted] scroll to: 84.000000
  2013-09-24 21:54:36.392 [Redacted] scroll to: 90.000000
  2013-09-24 21:54:36.408 [Redacted] scroll to: 95.000000
  2013-09-24 21:54:36.425 [Redacted] scroll to: 100.000000
  2013-09-24 21:54:36.441 [Redacted] scroll to: 103.000000
  2013-09-24 21:54:36.459 [Redacted] scroll to: 107.000000
  2013-09-24 21:54:36.475 [Redacted] scroll to: 110.000000
  2013-09-24 21:54:36.492 [Redacted] scroll to: 114.000000
  2013-09-24 21:54:36.509 [Redacted] scroll to: 118.000000
  2013-09-24 21:54:36.525 [Redacted] scroll to: 122.000000
  2013-09-24 21:54:36.542 [Redacted] scroll to: 126.000000
  2013-09-24 21:54:36.558 [Redacted] scroll to: 130.000000
  2013-09-24 21:54:36.575 [Redacted] scroll to: 134.000000
  2013-09-24 21:54:36.592 [Redacted] scroll to: 141.000000
  2013-09-24 21:54:36.609 [Redacted] scroll to: 147.000000
  2013-09-24 21:54:36.625 [Redacted] scroll to: 152.000000
  2013-09-24 21:54:36.642 [Redacted] scroll to: 156.000000
  2013-09-24 21:54:36.659 [Redacted] scroll to: 159.000000
  2013-09-24 21:54:36.676 [Redacted] scroll to: 160.000000
  2013-09-24 21:54:36.776 [Redacted] scroll to: 161.000000
  2013-09-24 21:54:37.010 [Redacted] scroll to: 162.000000
  2013-09-24 21:54:37.026 [Redacted] scroll to: 168.000000
  2013-09-24 21:54:37.043 [Redacted] scroll to: 179.000000
  2013-09-24 21:54:37.060 [Redacted] scroll to: 195.000000
  2013-09-24 21:54:37.077 [Redacted] scroll to: 207.000000
  2013-09-24 21:54:37.097 [Redacted] scroll to: 209.000000
  2013-09-24 21:54:37.112 [Redacted] scroll to: 219.000000
  2013-09-24 21:54:37.129 [Redacted] scroll to: 223.000000
  2013-09-24 21:54:37.145 [Redacted] scroll to: 222.000000
  2013-09-24 21:54:37.162 [Redacted] scroll to: 218.000000
  2013-09-24 21:54:37.179 [Redacted] scroll to: 212.000000
  2013-09-24 21:54:37.195 [Redacted] scroll to: 204.000000
  2013-09-24 21:54:37.212 [Redacted] scroll to: 195.000000
  2013-09-24 21:54:37.229 [Redacted] scroll to: 186.000000
  2013-09-24 21:54:37.245 [Redacted] scroll to: 177.000000
  2013-09-24 21:54:37.262 [Redacted] scroll to: 168.000000
  2013-09-24 21:54:37.279 [Redacted] scroll to: 160.000000
  2013-09-24 21:54:37.296 [Redacted] scroll to: 152.000000
  2013-09-24 21:54:37.312 [Redacted] scroll to: 145.000000
  2013-09-24 21:54:37.329 [Redacted] scroll to: 138.000000
  2013-09-24 21:54:37.346 [Redacted] scroll to: 133.000000
  2013-09-24 21:54:37.362 [Redacted] scroll to: 127.000000
  2013-09-24 21:54:37.379 [Redacted] scroll to: 122.000000
  2013-09-24 21:54:37.396 [Redacted] scroll to: 118.000000
  2013-09-24 21:54:37.412 [Redacted] scroll to: 114.000000
  2013-09-24 21:54:37.429 [Redacted] scroll to: 111.000000
  2013-09-24 21:54:37.445 [Redacted] scroll to: 108.000000
  2013-09-24 21:54:37.462 [Redacted] scroll to: 105.000000
  2013-09-24 21:54:37.479 [Redacted] scroll to: 103.000000
  2013-09-24 21:54:37.496 [Redacted] scroll to: 101.000000
  2013-09-24 21:54:37.512 [Redacted] scroll to: 99.000000
  2013-09-24 21:54:37.529 [Redacted] scroll to: 98.000000
  2013-09-24 21:54:37.545 [Redacted] scroll to: 96.000000
  2013-09-24 21:54:37.562 [Redacted] scroll to: 95.000000
  2013-09-24 21:54:37.579 [Redacted] scroll to: 94.000000
  2013-09-24 21:54:37.595 [Redacted] scroll to: 93.000000
  2013-09-24 21:54:37.629 [Redacted] scroll to: 92.000000
  2013-09-24 21:54:37.645 [Redacted] scroll to: 91.000000
  2013-09-24 21:54:37.695 [Redacted] scroll to: 90.000000
  2013-09-24 21:54:37.745 [Redacted] scroll to: 89.000000
  2013-09-24 21:54:37.862 [Redacted] scroll to: 88.000000
  2013-09-24 21:54:38.381 [Redacted] scroll to: 89.000000
  2013-09-24 21:54:38.397 [Redacted] scroll to: 108.000000
  2013-09-24 21:54:38.414 [Redacted] scroll to: 127.000000
  2013-09-24 21:54:38.431 [Redacted] scroll to: 150.000000
  2013-09-24 21:54:38.448 [Redacted] scroll to: 164.000000
  2013-09-24 21:54:38.464 [Redacted] scroll to: 182.000000
  2013-09-24 21:54:38.481 [Redacted] scroll to: 195.000000
  2013-09-24 21:54:38.499 [Redacted] scroll to: 213.000000
  2013-09-24 21:54:38.516 [Redacted] scroll to: 222.000000
  2013-09-24 21:54:38.533 [Redacted] scroll to: 224.000000
  2013-09-24 21:54:38.550 [Redacted] scroll to: 222.000000
  2013-09-24 21:54:38.566 [Redacted] scroll to: 217.000000
  2013-09-24 21:54:38.583 [Redacted] scroll to: 209.000000
  2013-09-24 21:54:38.599 [Redacted] scroll to: 201.000000
  2013-09-24 21:54:38.616 [Redacted] scroll to: 192.000000
  2013-09-24 21:54:38.633 [Redacted] scroll to: 183.000000
  2013-09-24 21:54:38.650 [Redacted] scroll to: 174.000000
  2013-09-24 21:54:38.666 [Redacted] scroll to: 166.000000
  2013-09-24 21:54:38.683 [Redacted] scroll to: 157.000000
  2013-09-24 21:54:38.699 [Redacted] scroll to: 150.000000
  2013-09-24 21:54:38.716 [Redacted] scroll to: 143.000000
  2013-09-24 21:54:38.733 [Redacted] scroll to: 137.000000
  2013-09-24 21:54:38.749 [Redacted] scroll to: 131.000000
  2013-09-24 21:54:38.766 [Redacted] scroll to: 126.000000
  2013-09-24 21:54:38.783 [Redacted] scroll to: 121.000000
  2013-09-24 21:54:38.799 [Redacted] scroll to: 117.000000
  2013-09-24 21:54:38.816 [Redacted] scroll to: 113.000000
  2013-09-24 21:54:38.833 [Redacted] scroll to: 110.000000
  2013-09-24 21:54:38.849 [Redacted] scroll to: 107.000000
  2013-09-24 21:54:38.866 [Redacted] scroll to: 105.000000
  2013-09-24 21:54:38.883 [Redacted] scroll to: 102.000000
  2013-09-24 21:54:38.900 [Redacted] scroll to: 100.000000
  2013-09-24 21:54:38.916 [Redacted] scroll to: 99.000000
  2013-09-24 21:54:38.933 [Redacted] scroll to: 97.000000
  2013-09-24 21:54:38.950 [Redacted] scroll to: 96.000000
  2013-09-24 21:54:38.966 [Redacted] scroll to: 95.000000
  2013-09-24 21:54:38.983 [Redacted] scroll to: 94.000000
  2013-09-24 21:54:39.000 [Redacted] scroll to: 93.000000
  2013-09-24 21:54:39.016 [Redacted] scroll to: 92.000000
  2013-09-24 21:54:39.049 [Redacted] scroll to: 91.000000
  2013-09-24 21:54:39.083 [Redacted] scroll to: 90.000000
  2013-09-24 21:54:39.150 [Redacted] scroll to: 89.000000
  2013-09-24 21:54:39.267 [Redacted] scroll to: 88.000000
  2013-09-24 21:54:43.145 [Redacted] scroll to: 91.000000
  2013-09-24 21:54:43.162 [Redacted] scroll to: 97.000000
  2013-09-24 21:54:43.178 [Redacted] scroll to: 103.000000
  2013-09-24 21:54:43.195 [Redacted] scroll to: 109.000000
  2013-09-24 21:54:43.212 [Redacted] scroll to: 115.000000
  2013-09-24 21:54:43.229 [Redacted] scroll to: 120.000000
  2013-09-24 21:54:43.245 [Redacted] scroll to: 124.000000
  2013-09-24 21:54:43.262 [Redacted] scroll to: 127.000000
  2013-09-24 21:54:43.279 [Redacted] scroll to: 130.000000
  2013-09-24 21:54:43.296 [Redacted] scroll to: 131.000000
  2013-09-24 21:54:43.312 [Redacted] scroll to: 133.000000
  2013-09-24 21:54:43.329 [Redacted] scroll to: 135.000000
  2013-09-24 21:54:43.345 [Redacted] scroll to: 136.000000
  2013-09-24 21:54:43.374 [Redacted] scroll to: 137.000000
  2013-09-24 21:54:43.664 [Redacted] scroll to: 138.000000
  2013-09-24 21:54:43.681 [Redacted] scroll to: 139.000000
  2013-09-24 21:54:43.697 [Redacted] scroll to: 143.000000
  2013-09-24 21:54:43.714 [Redacted] scroll to: 149.000000
  2013-09-24 21:54:43.731 [Redacted] scroll to: 155.000000
  2013-09-24 21:54:43.748 [Redacted] scroll to: 161.000000
  2013-09-24 21:54:43.764 [Redacted] scroll to: 166.000000
  2013-09-24 21:54:43.781 [Redacted] scroll to: 169.000000
  2013-09-24 21:54:43.798 [Redacted] scroll to: 172.000000
  2013-09-24 21:54:43.814 [Redacted] scroll to: 174.000000
  2013-09-24 21:54:43.831 [Redacted] scroll to: 177.000000
  2013-09-24 21:54:43.848 [Redacted] scroll to: 178.000000
  2013-09-24 21:54:43.865 [Redacted] scroll to: 180.000000
  2013-09-24 21:54:43.887 [Redacted] scroll to: 181.000000
  2013-09-24 21:54:43.914 [Redacted] scroll to: 183.000000
  2013-09-24 21:54:43.948 [Redacted] scroll to: 184.000000
  2013-09-24 21:54:43.981 [Redacted] scroll to: 186.000000
  2013-09-24 21:54:43.998 [Redacted] scroll to: 187.000000
  2013-09-24 21:54:44.015 [Redacted] scroll to: 188.000000
  2013-09-24 21:54:44.031 [Redacted] scroll to: 189.000000
  2013-09-24 21:54:44.048 [Redacted] scroll to: 190.000000
  2013-09-24 21:54:44.065 [Redacted] scroll to: 191.000000
  2013-09-24 21:54:44.082 [Redacted] scroll to: 192.000000
  2013-09-24 21:54:44.116 [Redacted] scroll to: 194.000000
  2013-09-24 21:54:44.149 [Redacted] scroll to: 195.000000
  2013-09-24 21:54:44.182 [Redacted] scroll to: 196.000000
  2013-09-24 21:54:44.216 [Redacted] scroll to: 197.000000
  2013-09-24 21:54:44.266 [Redacted] scroll to: 198.000000
  2013-09-24 21:54:44.283 [Redacted] scroll to: 199.000000
  2013-09-24 21:54:44.299 [Redacted] scroll to: 200.000000
  2013-09-24 21:54:44.316 [Redacted] scroll to: 202.000000
  2013-09-24 21:54:44.349 [Redacted] scroll to: 203.000000
  2013-09-24 21:54:44.366 [Redacted] scroll to: 204.000000
  2013-09-24 21:54:44.449 [Redacted] scroll to: 205.000000
  2013-09-24 21:54:44.500 [Redacted] scroll to: 206.000000
  2013-09-24 21:54:44.601 [Redacted] scroll to: 207.000000
  2013-09-24 21:54:44.932 [Redacted] scroll to: 189.000000
  2013-09-24 21:54:44.949 [Redacted] scroll to: 174.000000
  2013-09-24 21:54:44.966 [Redacted] scroll to: 161.000000
  2013-09-24 21:54:44.982 [Redacted] scroll to: 151.000000
  2013-09-24 21:54:44.999 [Redacted] scroll to: 141.000000
  2013-09-24 21:54:45.016 [Redacted] scroll to: 133.000000
  2013-09-24 21:54:45.032 [Redacted] scroll to: 126.000000
  2013-09-24 21:54:45.049 [Redacted] scroll to: 121.000000
  2013-09-24 21:54:45.066 [Redacted] scroll to: 116.000000
  2013-09-24 21:54:45.082 [Redacted] scroll to: 112.000000
  2013-09-24 21:54:45.099 [Redacted] scroll to: 108.000000
  2013-09-24 21:54:45.116 [Redacted] scroll to: 105.000000
  2013-09-24 21:54:45.133 [Redacted] scroll to: 102.000000
  2013-09-24 21:54:45.149 [Redacted] scroll to: 100.000000
  2013-09-24 21:54:45.166 [Redacted] scroll to: 98.000000
  2013-09-24 21:54:45.183 [Redacted] scroll to: 97.000000
  2013-09-24 21:54:45.200 [Redacted] scroll to: 96.000000
  2013-09-24 21:54:45.216 [Redacted] scroll to: 94.000000
  2013-09-24 21:54:45.233 [Redacted] scroll to: 93.000000
  2013-09-24 21:54:45.266 [Redacted] scroll to: 92.000000
  2013-09-24 21:54:45.283 [Redacted] scroll to: 91.000000
  2013-09-24 21:54:45.316 [Redacted] scroll to: 90.000000
  2013-09-24 21:54:45.366 [Redacted] scroll to: 89.000000
  2013-09-24 21:54:45.483 [Redacted] scroll to: 88.000000
  </code></pre>
  
  <p>As you can see, I can't scroll beyond 200 odd.</p>
  
  <p>I'm not new to iOS and have worked with scroll views before so I feel like I must be missing something really obvious.</p>
  
  <p>Any help greatly appreciated, have a tight deadline!</p>
  
  <p>EDIT: Added code:</p>
  
  <pre><code>checkboxes = [[NSMutableArray alloc] init];
  {
      // Just indented scope for tidyness, no functional meaning
      [checkboxes addObject:[self createCheckboxWithLabel:@"Oil Level Checked"
                                                       atY:190]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Coolant Level Checked"
                                                           atY:240]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Tyre pressures &amp; tread dept checked"
                                                           atY:290]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Warning beacon &amp; horn operating"
                                                           atY:340]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Lights &amp; indicators working &amp; clean"
                                                           atY:390]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Screen was &amp; wipers operational"
                                                           atY:440]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Mirrors undamaged &amp; clean"
                                                           atY:490]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Road Tax &amp; MOD discs present &amp; valid"
                                                           atY:540]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"PPE in vechile"
                                                           atY:590]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Fire Extinguisher &amp; First Aid kit present"
                                                           atY:640]];
      [checkboxes addObject:[self createCheckboxWithLabel:@"Wheel nuts checked with torque wrench"
                                                           atY:690]];
  }
  for(WpCheckboxWithLabelView *checkbox in checkboxes){
      [scrollView addSubview: checkbox];
  }
  
  // Set content size of scrollview
  scrollView.contentSize = CGSizeMake(0, 10000);
  scrollView.delegate = self;
  NSLog(@"scrollView frame size: %f,%f", scrollView.frame.size.width, scrollView.frame.size.height);
  NSLog(@"scrollView content size: %f,%f", scrollView.contentSize.width, scrollView.contentSize.height);
  </code></pre>