[Offline][iOS][Android] Add option to set maximum offline tile count

android/src/main/java/com/mapbox/mapboxgl/GlobalMethodHandler.java

@@ -69,6 +69,10 @@ public void onMethodCall(MethodCall methodCall, MethodChannel.Result result) {
                 OfflineManagerUtils.mergeRegions(result, context, methodCall.argument("path"));
                 break;
 
+            case "setOfflineTileCountLimit":
+                OfflineManagerUtils.setOfflineTileCountLimit(result, context, methodCall.<Number>argument("limit").longValue());
+                break;
+
             case "downloadOfflineRegion":
                 // Get download region arguments from caller
                 OfflineRegionData regionData = new Gson().fromJson(methodCall.argument("region").toString(), OfflineRegionData.class);

android/src/main/java/com/mapbox/mapboxgl/OfflineManagerUtils.java

@@ -42,6 +42,11 @@ public void onError(String error) {
         });
     }
 
+    static void setOfflineTileCountLimit(MethodChannel.Result result, Context context, long limit){
+        OfflineManager.getInstance(context).setOfflineMapboxTileCountLimit(limit);
+        result.success(null);
+    }
+
     static void downloadRegion(
         MethodChannel.Result result,
         Context context,

ios/Classes/OfflineManagerUtils.swift

@@ -65,7 +65,13 @@ class OfflineManagerUtils {
         }
         result(regionsArgsJsonString)
     }
-
+
+    static func setOfflineTileCountLimit(result: @escaping FlutterResult, maximumCount: UInt64) {
+        let offlineStorage = MGLOfflineStorage.shared
+        offlineStorage.setMaximumAllowedMapboxTiles(maximumCount)
+        result(nil)
+    }
+
     static func deleteRegion(result: @escaping FlutterResult, id: Int) {
         let offlineStorage = MGLOfflineStorage.shared
         guard let pacs = offlineStorage.packs else { return }

ios/Classes/SwiftMapboxGlFlutterPlugin.swift

@@ -29,6 +29,17 @@ public class SwiftMapboxGlFlutterPlugin: NSObject, FlutterPlugin {
                     result: result,
                     registrar: registrar
                 )
+            case "setOfflineTileCountLimit":
+                guard let arguments = methodCall.arguments as? [String: Any],
+                    let limit = arguments["limit"] as? UInt64 else {
+                        result(FlutterError(
+                            code: "SetOfflineTileCountLimitError",
+                            message: "could not decode arguments",
+                            details: nil
+                        ))
+                        return
+                }
+                OfflineManagerUtils.setOfflineTileCountLimit(result: result, maximumCount: limit)
             case "getListOfRegions":
                 // Note: this does not download anything from internet, it only fetches data drom database
                 OfflineManagerUtils.regionsList(result: result)

lib/src/global.dart

@@ -59,6 +59,15 @@ Future<OfflineRegion> updateOfflineRegionMetadata(
   return OfflineRegion.fromJson(json.decode(regionJson));
 }
 
+Future<dynamic> setOfflineTileCountLimit(int limit, {String accessToken}) =>
+    _globalChannel.invokeMethod(
+      'setOfflineTileCountLimit',
+      <String, dynamic>{
+        'limit': limit,
+        'accessToken': accessToken,
+      },
+    );
+
 Future<dynamic> deleteOfflineRegion(int id, {String accessToken}) =>
     _globalChannel.invokeMethod(
       'deleteOfflineRegion',