title: Get appropriate message on apk download attempt
body: <p>I allow users to update the app apk file when there's a new version.</p>
  
  <pre><code>let download_folder : java.io.File = android.os.Environment.getExternalStoragePublicDirectory( android.os.Environment.DIRECTORY_DOWNLOADS );
  
  let file = fileModule.path.join( download_folder.getPath(), "app.apk" );
  
  permissions.requestPermission( ["android.permission.WRITE_EXTERNAL_STORAGE"], "Permission required to install app update!" )
  </code></pre>
  
  <p>When the user tries to download, they get a system prompt:</p>
  
  <p><code>Allow &lt;app-name&gt; to access photos, media, and files on your device?</code></p>
  
  <p>Understandably, some users have questioned why the app needs access to photos - I'm just downloading the file and installing it.</p>
  
  <p>I've got the following permissions in the manifest file - but I don't think newer OSes use these.</p>
  
  <pre><code>    &lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/&gt;
      &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt;
  </code></pre>
  
  <p>What can be done so that they don't get that message?</p>
  
  <p>I've got a message but it seems to be overrridden.</p>
  
  <p>Thanks.</p>