title: Presenting modal in iOS 13 with custom height
body: <p>In iOS 13 there is a new behaviour for modal view controller when being presented.And I found the build-in App Photo presents a smaller model view controller.</p>
  
  <p>How can I present a viewController with a custom size like this，and can slide up to a larger height?</p>
  
  <p><img src="https://i.stack.imgur.com/eudr0.png" alt="smaller height"></p>
  
  <p><img src="https://i.stack.imgur.com/clhgY.png" alt="larger height"></p>
  
  <p>Picture screenshots from system photo app.</p>