Define fetchCallbackId as @property instead of private variable

src/ios/CDVBackgroundGeoLocation.h

@@ -9,6 +9,9 @@
 #import <AudioToolbox/AudioToolbox.h>
 
 @interface CDVBackgroundGeoLocation : CDVPlugin <CLLocationManagerDelegate>
+
+@property (nonatomic, strong) NSString* syncCallbackId;
+
 - (void) configure:(CDVInvokedUrlCommand*)command;
 - (void) start:(CDVInvokedUrlCommand*)command;
 - (void) stop:(CDVInvokedUrlCommand*)command;

src/ios/CDVBackgroundGeoLocation.m

@@ -21,7 +21,6 @@
     BOOL enabled;
     NSString *token;
     NSString *url;
-    NSString *syncCallbackId;
     UIBackgroundTaskIdentifier bgTask;
     NSTimer *backgroundTimer;
     
@@ -95,7 +94,7 @@
     isDebugging         = [[command.arguments objectAtIndex: 7] boolValue];
     activityType        = [self decodeActivityType:[command.arguments objectAtIndex:9]];
     
-    syncCallbackId = command.callbackId;
+    self.syncCallbackId = command.callbackId;
     
     locationManager.activityType = activityType;
     locationManager.pausesLocationUpdatesAutomatically = YES;
@@ -427,7 +426,7 @@
     result = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDictionary:returnInfo];
     [result setKeepCallbackAsBool:YES];
     
-    [self.commandDelegate sendPluginResult:result callbackId:syncCallbackId];
+    [self.commandDelegate sendPluginResult:result callbackId:self.syncCallbackId];
 }
 
 - (void) stopBackgroundTask
@@ -496,12 +495,6 @@
     }
     if (isMoving) {
         isAcquiringSpeed = YES;
-        locationAcquisitionAttempts = 0;
-        
-        locationManager.distanceFilter = distanceFilter;
-        // Power-up the GPS temporarily until we get a good speed sample.
-        locationManager.desiredAccuracy = kCLLocationAccuracyBest;
-        [locationManager startUpdatingLocation];
     } else {
         isAcquiringStationaryLocation   = YES;
     }