Finally fixed annoying permission request conflict bug

Author: sveinbjornt

lib/loc.dart

@@ -21,6 +21,7 @@
 import 'dart:async';
 
 import 'package:geolocator/geolocator.dart';
+import 'package:permission_handler/permission_handler.dart';
 
 import './common.dart';
 import './prefs.dart';
@@ -38,33 +39,28 @@ class LocationTracking {
   StreamSubscription<Position> positionStream;
 
   void start() async {
-    try {
-      LocationPermission permission = await Geolocator.requestPermission();
-      if (permission == LocationPermission.denied ||
-          permission == LocationPermission.deniedForever) {
-        Prefs().setBoolForKey('share_location', false);
-        return;
-      }
-    } catch (err) {
-      dlog("Error requesting permission: $err");
+    // We never start location tracking if it's disabled in prefs or if we don't have permission
+    if (Prefs().boolForKey('share_location') == false ||
+        await Permission.location.isGranted == false) {
+      dlog("Could not start location tracking, permission not granted");
+      return;
     }
-
     if (positionStream != null) {
-      // Already ongoing
+      // Location tracking already ongoing
       return;
     }
+
     dlog('Starting location tracking');
-    // positionStream = Geolocator.getPositionStream(desiredAccuracy: LocationAccuracy.best)
-    //     .listen((Position position) {
-    //   if (position == null) {
-    //     known = false;
-    //     return;
-    //   }
-    //   lat = position.latitude;
-    //   lon = position.longitude;
-    //   known = true;
-    //   //dlog("Location: ${lat.toString()}, ${lon.toString()}");
-    // });
+    positionStream = Geolocator.getPositionStream().listen((Position position) {
+      if (position == null) {
+        known = false;
+        return;
+      }
+      lat = position.latitude;
+      lon = position.longitude;
+      known = true;
+      //dlog("Location: ${lat.toString()}, ${lon.toString()}");
+    });
   }
 
   void stop() {

lib/main.dart

@@ -69,30 +69,21 @@ void main() async {
   // This wakelock is disabled when leaving session route
   Wakelock.enable();
 
-  // Request microphone permission
-  // TODO: We should ask for all permissions in one request
-  PermissionStatus status = await Permission.microphone.request();
-  if (status != PermissionStatus.granted) {
-    dlog("Microphone permission refused");
+  // Request permissions
+  Map<Permission, PermissionStatus> statuses = await [
+    Permission.microphone,
+    Permission.location,
+  ].request();
+
+  if (statuses[Permission.microphone].isDenied) {
+    dlog("Microphone permission is denied.");
   }
 
-  // Request and activate location tracking
-  if (Prefs().boolForKey('share_location') == true) {
-    // Wrap in try/catch in case another location permission request is ongoing.
-    // This is a hack. For some reason, some versions of Android can activate a
-    // location permission request without being triggered by the Flutter
-    // permissions package, and simultaneous requests trigger an exception.
-    try {
-      LocationPermission permission = await Geolocator.requestPermission();
-      if (permission != LocationPermission.denied &&
-          permission != LocationPermission.deniedForever) {
-        LocationTracking().start();
-      } else {
-        Prefs().setBoolForKey('share_location', false);
-      }
-    } catch (err) {
-      LocationTracking().start();
-    }
+  if (statuses[Permission.location].isDenied) {
+    print("Location permission is denied.");
+    Prefs().setBoolForKey('share_location', false);
+  } else {
+    LocationTracking().start();
   }
 
   // Launch app with session route

lib/session.dart

@@ -154,14 +154,12 @@ class SessionRouteState extends State<SessionRoute> with TickerProviderStateMixi
   }
 
   Future<void> requestMicPermissionAndStartHotwordDetection() async {
-    // Request microphone permission
-    PermissionStatus status = await Permission.microphone.request();
-    if (status != PermissionStatus.granted) {
-      dlog("Microphone permission refused");
-    } else {
+    if (await Permission.microphone.isGranted) {
       if (Prefs().boolForKey('hotword_activation') == true) {
         HotwordDetector().start(hotwordHandler);
       }
+    } else {
+      dlog("Cannot start hotword detection, microphone permission refused");
     }
   }
 
@@ -360,13 +358,14 @@ class SessionRouteState extends State<SessionRoute> with TickerProviderStateMixi
       dlog('Session start called during pre-existing session!');
       return;
     }
+
     dlog('Starting session');
 
-    // if (await SpeechRecognizer().canRecognizeSpeech() == false) {
-    //   AudioPlayer().playSound('rec_cancel');
-    //   showRecognitionErrorAlert(context);
-    //   return;
-    // }
+    if (await Permission.microphone.isGranted == false) {
+      AudioPlayer().playSound('rec_cancel');
+      showRecognitionErrorAlert(context);
+      return;
+    }
 
     // Check for internet connectivity
     if (await isConnectedToInternet() == false) {