title: View controller with background image and transparency xamarin
body: <p>I kind of stuck with a design issue in iOS.</p>
  
  <p>I have a controller with a background image, nothing special.</p>
  
  <pre><code>this.View.BackgroundColor = UIColor.FromPatternImage (UIImage.FromFile ("Images/ballons.jpg"));
  </code></pre>
  
  <p>On top of the controller I have a view with a background color (white) that is semi-transparent.</p>
  
  <pre><code>this.Frame = new System.Drawing.RectangleF (0, 0, UIScreen.MainScreen.Bounds.Width, UIScreen.MainScreen.Bounds.Height);
  this.BackgroundColor = UIColor.White;
  this.Alpha = 0.5f;
  </code></pre>
  
  <p>Now the issue is if I add a button or any other controls in my view they also becomes transparent...so am I thinking wrong here...?</p>
  
  <p>I would like the controller to have a background image, the view a white semi-transparent background and all the controls (buttons, images) not to be transparent at all...</p>