Introduce a setConnected method to manually set a connected flag

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/MapboxAccountManager.java

@@ -18,6 +18,8 @@ public class MapboxAccountManager {
     private final String accessToken;
     private final Context applicationContext;
 
+    private Boolean connected = null;
+
     /**
      * MapboxAccountManager should NOT be instantiated directly.
      * Use @see MapboxAccountManager#getInstance() instead.
@@ -89,13 +91,30 @@ public static void validateAccessToken(String accessToken) throws InvalidAccessT
         }
     }
 
+    /**
+     * Manually sets the connectivity state of the app. This is useful for apps that control their
+     * own connectivity state and want to bypass any checks to the ConnectivityManager.
+     *
+     * @param connected flag to determine the connectivity state, true for connected, false for
+     *                  disconnected, null for ConnectivityManager to determine.
+     */
+    public void setConnected(Boolean connected) {
+        // Connectivity state overridden by app
+        this.connected = connected;
+    }
+
     /**
      * Determines whether we have an Internet connection available. Please do not rely on this
      * method in your apps, this method is used internally by the SDK.
      *
      * @return true if there is an Internet connection, false otherwise
      */
     public boolean isConnected() {
+        if (connected != null) {
+            // Connectivity state overridden by app
+            return connected;
+        }
+
         ConnectivityManager cm = (ConnectivityManager) applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE);
         NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
         return (activeNetwork != null && activeNetwork.isConnected());

platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/offline/OfflineActivity.java

@@ -13,8 +13,10 @@
 import android.widget.ProgressBar;
 import android.widget.Toast;
 
+import com.mapbox.mapboxsdk.MapboxAccountManager;
 import com.mapbox.mapboxsdk.camera.CameraPosition;
 import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
+import com.mapbox.mapboxsdk.constants.MapboxConstants;
 import com.mapbox.mapboxsdk.constants.Style;
 import com.mapbox.mapboxsdk.geometry.LatLng;
 import com.mapbox.mapboxsdk.geometry.LatLngBounds;
@@ -73,6 +75,13 @@ protected void onCreate(Bundle savedInstanceState) {
             actionBar.setDisplayShowHomeEnabled(true);
         }
 
+        // You can use MapboxAccountManager.setConnected(Boolean) to manually set the connectivity
+        // state of your app. This will override any checks performed via the ConnectivityManager.
+        //MapboxAccountManager.getInstance().setConnected(false);
+        boolean connected = MapboxAccountManager.getInstance().isConnected();
+        Log.d(LOG_TAG, String.format(MapboxConstants.MAPBOX_LOCALE,
+                "MapboxAccountManager is connected: %b", connected));
+
         // Set up map
         mapView = (MapView) findViewById(R.id.mapView);
         mapView.setStyleUrl(Style.MAPBOX_STREETS);