title: Xamarin.Forms: How to use DPI and Weights
body: <p>I developed a lot of apps with Xamarin for Android. Whenever I wanted to show a picture, and wanted this picture to have the same dimensions on every phone, I used weights. They act like percentage values.</p>
  
  <p>So I could declare a picture or a layout to for instance ALWAYS take 50 % of its parent layout.
  The result was, that everything look identical on each phone.</p>
  
  <p>Now I switched to Xamarin.Forms to also develop for iOS. </p>
  
  <p>However, I just found out that weights or even DPI (which work kind of similar) do not exist here anymore.</p>
  
  <p>The result is wildly different images sizes between iOS and Android, when shared from the same XAML. </p>
  
  <p>How can I go on about this when neither option (DPI nor weights) is available? Is there an equivalent? </p>
  
  <p>Thank you!</p>