Fix: GPS Access denied when phone in standby

Added ACCESS_BACKGROUND_LOCATION permission to access GPS while phone is in standby. This is necessary for situations where the PublicAPI is triggered to start a record from an external device like a smartwatch.

README.md

@@ -94,8 +94,9 @@ OpenTracks can be used with [Gadgetbridge](https://www.gadgetbridge.org/):
 * __No in-app analytics__
 * __No use of Google Play Services__
 
-__Only required permission:__
+__Only required permissions:__
 * _ACCESS_FINE_LOCATION_: required to use the GPS.
+* _ACCESS_BACKGROUND_LOCATION_: required to start recording with GPS while phone is in standby. (e.g. when triggered by Public API from an external device)
 
 ### Public API
 

src/main/AndroidManifest.xml

@@ -46,6 +46,7 @@ limitations under the License.
 
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
 

src/main/java/de/dennisguse/opentracks/util/PermissionRequester.java

@@ -57,7 +57,7 @@ public class PermissionRequester {
         locationPermissionRequest.launch(permissions.toArray(permissions.toArray(new String[0])));
     }
 
-    private static final List<String> GPS_PERMISSION = List.of(Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION);
+    private static final List<String> GPS_PERMISSION = List.of(Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_BACKGROUND_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION);
 
     private static final List<String> BLUETOOTH_PERMISSIONS;