--- a/cagou/core/platform_/android.py	Wed Apr 01 23:59:00 2020 +0200
+++ b/cagou/core/platform_/android.py	Wed Apr 01 23:59:00 2020 +0200
@@ -25,7 +25,7 @@
 from pathlib import Path
 import shutil
 import mimetypes
-from jnius import autoclass, cast
+from jnius import autoclass, cast, JavaException
 from android import activity
 from android.permissions import request_permissions, Permission
 from kivy.clock import Clock
@@ -57,6 +57,7 @@
 ImagesMedia = autoclass('android.provider.MediaStore$Images$Media')
 AudioMedia = autoclass('android.provider.MediaStore$Audio$Media')
 VideoMedia = autoclass('android.provider.MediaStore$Video$Media')
+URLConnection = autoclass('java.net.URLConnection')
 
 DISPLAY_NAME = '_display_name'
 DATA = '_data'
@@ -454,11 +455,33 @@
 
     def open_url(self, url, wid=None):
         parsed_url = urlparse(url)
-        if parsed_url.scheme == "geo":
+        if parsed_url.scheme == "aesgcm":
+            return super().open_url(url, wid)
+        else:
+            media_type = mimetypes.guess_type(url, strict=False)[0]
+            if media_type is None:
+                log.debug(
+                    f"media_type for {url!r} not found with python mimetypes, trying "
+                    f"guessContentTypeFromName")
+                media_type = URLConnection.guessContentTypeFromName(url)
             intent = Intent(Intent.ACTION_VIEW)
-            intent.setData(Uri.parse(url))
+            if media_type is not None:
+                log.debug(f"file {url!r} is of type {media_type}")
+                intent.setDataAndType(Uri.parse(url), media_type)
+            else:
+                log.debug(f"can't guess media type for {url!r}")
+                intent.setData(Uri.parse(url))
             if mActivity.getPackageManager() is not None:
                 activity = cast('android.app.Activity', mActivity)
-                activity.startActivity(intent)
-        else:
-            super().open_url(url, wid)
+                try:
+                    activity.startActivity(intent)
+                except JavaException as e:
+                    if e.classname != "android.content.ActivityNotFoundException":
+                        raise e
+                    log.debug(
+                        f"activity not found for url {url!r}, we'll try generic opener")
+                else:
+                    return
+
+        # if nothing else worked, we default to base open_url
+        super().open_url(url, wid)