Fix Installation timezone TODO. (#186)

Author: yulingtianxia

lib/parse_server_sdk.dart

@@ -18,6 +18,7 @@ import 'package:shared_preferences/shared_preferences.dart';
 import 'package:uuid/uuid.dart';
 import 'package:web_socket_channel/io.dart';
 import 'package:xxtea/xxtea.dart';
+import 'package:flutter_native_timezone/flutter_native_timezone.dart';
 
 part 'package:parse_server_sdk/src/objects/response/parse_error_response.dart';
 part 'package:parse_server_sdk/src/objects/response/parse_exception_response.dart';

lib/src/objects/parse_installation.dart

@@ -82,8 +82,9 @@ class ParseInstallation extends ParseObject {
     }
 
     //Timezone
-    //TODO set<String>(keyTimeZone, );
-
+    final String currentTimeZone = await FlutterNativeTimezone.getLocalTimezone();
+    set<String>(keyTimeZone, currentTimeZone);
+    
     //App info
     final PackageInfo packageInfo = await PackageInfo.fromPlatform();
     set<String>(keyAppName, packageInfo.appName);

pubspec.yaml

@@ -18,6 +18,7 @@ dependencies:
   sembast: ^1.15.1
   xxtea: ^2.0.2
 
+  flutter_native_timezone: ^1.0.4
 
   # Utils
   path_provider: ^0.5.0+1