title: How to open the default app on a mobile device based on the file extension?
body: <p>We are writing a cross platform application in Firemonkey.
  One of the features is that the user can download files that are stored on the server.
  Therefore we have a REST service the application uses to download the file.</p>
  <p>We don't know the file type, it could be pdf, image or a word document, ...
  I'm looking for a routine that allows launching the standard app on the mobile device that is capable of opening the document and this for IOS and Android.</p>
  <p>Can anybody help me with that?</p>
  <p>Thx,</p>
  <p>Dominique</p>