title: ios setting anchor from XIB table not working properly
body: <p>I have some widgets defined in an XIB, I want to set the constrains-anchors programatically. When I set an imageView seems to work, but a UITable is disappearing when left, right or bottom anchors are set.</p>
  
  <p>Also the table is not setting Y position underneath the imageView...</p>
  
  <pre><code>- (void)viewDidLayoutSubviews{
      [super viewDidLayoutSubviews];
  
      [self setupConstrains];
  }
  
  - (void)setupConstrains {
  
  //    //image world
      self.whatDoppelsView.translatesAutoresizingMaskIntoConstraints = false;
  
      [self.whatDoppelsView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor].active = YES;
      [self.whatDoppelsView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor].active = YES;
  
      //table,
      self.table.translatesAutoresizingMaskIntoConstraints = false;
  //    
      [self.table.topAnchor constraintEqualToAnchor:self.whatDoppelsView.bottomAnchor constant:0];
  //
  //    [self.table.topAnchor constraintEqualToAnchor:self.view.topAnchor constant:1];
  //
  //    //[self.table.heightAnchor constraintEqualToConstant:900];
  //    
      [self.table.heightAnchor constraintEqualToAnchor:self.view.heightAnchor multiplier:0.50];
  
  //    [self.table.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor].active = YES;
  //    [self.table.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor].active = YES;
  
  //    [self.table.bottomAnchor constraintEqualToAnchor: self.view.bottomAnchor].active = YES;
  
  }
  </code></pre>
  
  <p>If i uncomment the table leading, trailing or bottom anchor, it disappears, also the table should be underneath my imageView.</p>
  
  <p>How to fix this layout?, thanks!</p>