Merge pull request #43 from vanniktech/isLocationServiceEnabled

Add helper method isLocationServiceEnabled.

rxbluetooth/src/main/java/com/github/ivbaranov/rxbluetooth/RxBluetooth.java

@@ -26,6 +26,7 @@
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
+import android.location.LocationManager;
 import android.text.TextUtils;
 import com.github.ivbaranov.rxbluetooth.events.AclEvent;
 import com.github.ivbaranov.rxbluetooth.events.BondStateEvent;
@@ -44,6 +45,8 @@
 import java.util.concurrent.Callable;
 
 import static android.Manifest.permission.ACCESS_COARSE_LOCATION;
+import static android.location.LocationManager.GPS_PROVIDER;
+import static android.location.LocationManager.NETWORK_PROVIDER;
 import static android.os.Build.VERSION.SDK_INT;
 
 /**
@@ -94,6 +97,16 @@ public boolean isLocationPermissionGranted() {
     return true;
   }
 
+  /**
+   * Return true if a location service is enabled.
+   *
+   * @return true if either the GPS or Network provider is enabled
+   */
+  public boolean isLocationServiceEnabled() {
+    LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
+    return locationManager.isProviderEnabled(GPS_PROVIDER) || locationManager.isProviderEnabled(NETWORK_PROVIDER);
+  }
+
   /**
    * This will issue a request to enable Bluetooth through the system settings (without stopping
    * your application) via ACTION_REQUEST_ENABLE action Intent.