title: Get actual dimensions of iOS view
body: <p>How would I get the actual dimensions of a view or subview that I'm controlling? For example:</p>
  
  <pre><code>UIView *firstView = [[UIView alloc] initWithFrame:CGRectMake(0,0,200,100)];
  [self addSubview:firstView];
  
  UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 20, 230, 120)];
  [firstView addSubview:button];
  </code></pre>
  
  <p>As you can see, my <code>button</code> object exceeds the dimensions of the view it is being added to. </p>
  
  <p>With this is mind (assuming there are many objects being added as subviews), how can I determine the actual width and height of <code>firstView</code>?</p>