fix clear session active in mobile

lib/apps/chat/detail.dart

@@ -14,7 +14,7 @@ import 'package:esse/widgets/chat_message.dart';
 import 'package:esse/widgets/show_contact.dart';
 import 'package:esse/global.dart';
 import 'package:esse/provider.dart';
-import 'package:esse/session.dart';
+import 'package:esse/session.dart' show SessionType, OnlineType;
 
 import 'package:esse/apps/primitives.dart';
 import 'package:esse/apps/chat/models.dart';
@@ -53,6 +53,12 @@ class _ChatDetailState extends State<ChatDetail> {
     });
   }
 
+  @override
+  void deactivate() {
+    context.read<AccountProvider>().clearActivedSession(SessionType.Chat);
+    super.deactivate();
+  }
+
   _generateRecordPath() {
     this._recordName = DateTime.now().millisecondsSinceEpoch.toString() +
     '_' +

lib/apps/group_chat/detail.dart

@@ -18,6 +18,7 @@ import 'package:esse/widgets/show_contact.dart';
 import 'package:esse/rpc.dart';
 import 'package:esse/global.dart';
 import 'package:esse/provider.dart';
+import 'package:esse/session.dart' show SessionType;
 
 import 'package:esse/apps/primitives.dart';
 import 'package:esse/apps/group_chat/models.dart';
@@ -57,6 +58,12 @@ class _GroupChatDetailState extends State<GroupChatDetail> {
     });
   }
 
+  @override
+  void deactivate() {
+    context.read<AccountProvider>().clearActivedSession(SessionType.Group);
+    super.deactivate();
+  }
+
   _generateRecordPath() {
     this._recordName = DateTime.now().millisecondsSinceEpoch.toString() +
     '_' +

lib/provider.dart

@@ -207,6 +207,16 @@ class AccountProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  clearActivedSession(SessionType type) {
+    if (this.activedSession.type == type && this.actived > 0) {
+      rpc.send('session-suspend', [this.actived, this.activedSession.gid,
+          this.activedSession.type == SessionType.Group]
+      );
+      this.actived = 0;
+      this.coreShowWidget = DefaultCoreShow();
+    }
+  }
+
   updateActivedSession(int id, [SessionType type, int fid]) {
     if (fid != null && fid > 0) {
       for (int k in this.sessions.keys) {
@@ -221,11 +231,9 @@ class AccountProvider extends ChangeNotifier {
 
     if (id > 0) {
       if (this.actived != id && this.actived > 0) {
-        bool must = false;
-        if (this.activedSession.type == SessionType.Group) {
-          must = true;
-        }
-        rpc.send('session-suspend', [this.actived, this.activedSession.gid, must]);
+        rpc.send('session-suspend', [this.actived, this.activedSession.gid,
+            this.activedSession.type == SessionType.Group]
+        );
       }
       this.actived = id;
       this.activedSession.lastReaded = true;