Fix file manager access on Android 10

sbapp/kivymd/uix/filemanager/filemanager.py

@@ -649,7 +649,8 @@ class MDFileManager(MDRelativeLayout):
 
             return dirs, files
 
-        except OSError:
+        except OSError as e:
+            print("Filemanager OSError: "+str(e))
             return None, None
 
     def close(self) -> None:

sbapp/main.py

@@ -1677,8 +1677,6 @@ class SidebandApp(MDApp):
                     ate_dialog.open()
         
         else:
-            self.sideband.config["map_storage_path"] = None
-            self.sideband.save_configuration()
             if RNS.vendor.platformutils.get_platform() == "android":
                 toast("No file access, check permissions!")
             else:

sbapp/patches/AndroidManifest.tmpl.xml

@@ -54,6 +54,7 @@
                  {{ args.extra_manifest_application_arguments }}
                  android:theme="{{args.android_apptheme}}{% if not args.window %}.Fullscreen{% endif %}"
                  android:hardwareAccelerated="true"
+                 android:requestLegacyExternalStorage="true"
                  >
         {% for l in args.android_used_libs %}
         <uses-library android:name="{{ l }}" />