title: Autolayout , UITableView inside UiScrollView don't grow
body: <p>I had this structure on my storyboard (i have added some example name to easly understand):</p>
  
  <ul>
  <li><p><strong>UIView</strong> (the main view) "BlackView"</p>
  
  <p>-<strong>UIScrollView</strong> (inside the main view) "OrangeView"</p>
  
  <ul>
  <li><strong>UIView</strong> "YelloView" (ContentView inside main scroll)
  
  <ul>
  <li><strong>UITableView</strong> "BluView" (Inside and on the top of the contentView)</li>
  <li><strong>UIView</strong> "RedView" (Inside of the ContentView and on the same level of UITableview)</li>
  </ul></li>
  </ul></li>
  </ul>
  
  <p>What i wanna achive? I want a table that grow proportionally to his rows number (the row height is fixed to 60). I also want an UIScrollview that grow in content_size and scroll ability accordingly to the heights sum of the BlueView and the RedView.</p>
  
  <p>The autolayout constraints are:</p>
  
  <p><strong>UiScrollView "OrangeView":</strong> (top 0,trailing 0,bottom 0,leading 0)</p>
  
  <p><strong>UIView "YelloView":</strong> (top 0,trailing 0,bottom 0,leading 0) (equal width to main ed equal height to main "BlackView" , priority “low” for bottom)</p>
  
  <p><strong>UITabelView "BluView":</strong> (top 0,trailing 0,leading 0)</p>
  
  <p><strong>UIView "RedView":</strong> (Vertical space 2 to "BluView",trailing 0,leading 0,bottom 0 to YelloView)</p>
  
  <p>I have a complete chain of constraints from top to bottom of the view. UITableView is free to grow because i haven't set directly his "height" constraint and uitableview setscrollingenabled is FALSE. The result is a tableview that don't grow.</p>
  
  <p>I can produce the growing by code:</p>
  
  <pre><code>Table.frame=CGRectMake(BluView.frame.origin.x, BluView.frame.origin.y, BluView.frame.size.width, BluView.contentSize.height);
  </code></pre>
  
  <p>I works, the table frame and the "OrangeView" scroll content_size grow correctly but "RedView" doesn't respond to this frame change and it doesn't move to the new "table bottom" ad 2 of distance.</p>
  
  <p>What i have already tried to refresh the constraints system:</p>
  
  <pre><code>    [BlackView layoutIfNeeded];
      [BlackView setNeedsUpdateConstraints];
      [RedView layoutIfNeeded];
      [ScrollContainer layoutIfNeeded];
      [RedView layoutIfNeeded];
      [RedView setNeedsUpdateConstraints];
      [OrangeView setNeedsUpdateConstraints];
      [RedView updateConstraints];
      [OrangeView updateConstraints];
      [BlackView updateConstraints];
      [BluView setTranslatesAutoresizingMaskIntoConstraints:NO];
      [RedView setTranslatesAutoresizingMaskIntoConstraints:NO];
  </code></pre>
  
  <p>I have called those methods before and after the uitable frame change, they doesn't refresh the RedView's y position. How i can obtain the desired behaviour? There's a way to create anothere type of "costraints tree" or maybe there's another way to refresh the position of the RedView after i have programmatically change the Tableview frame?</p>