diff --git a/lib/apps/chat/models.dart b/lib/apps/chat/models.dart
index ed87780..e13b09d 100644
--- a/lib/apps/chat/models.dart
+++ b/lib/apps/chat/models.dart
@@ -11,6 +11,7 @@ class Friend {
   String pid = '';
   String name = '';
   String wallet = '';
+  String cloud = '';
   String remark = '';
   bool isClosed = false;
   RelativeTime time = RelativeTime();
@@ -36,11 +37,12 @@ class Friend {
     this.pid = params[1];
     this.name = params[2];
     this.wallet = params[3];
-    this.remark = params[4];
-    this.isClosed = params[5];
-    this.time = RelativeTime.fromInt(params[6]);
-    if (params.length == 8) {
-      this.online = params[7];
+    this.cloud = params[4];
+    this.remark = params[5];
+    this.isClosed = params[6];
+    this.time = RelativeTime.fromInt(params[7]);
+    if (params.length == 9) {
+      this.online = params[8];
     }
   }
 }
diff --git a/lib/apps/group/models.dart b/lib/apps/group/models.dart
index ff0d834..a73ca5c 100644
--- a/lib/apps/group/models.dart
+++ b/lib/apps/group/models.dart
@@ -9,7 +9,7 @@ import 'package:esse/apps/primitives.dart';
 
 class GroupChat {
   int id = 0;
-  String gid = '';
+  int gid = 0;
   String addr = '';
   String name = '';
   bool isClosed = false;
@@ -26,7 +26,7 @@ class GroupChat {
     this.isLocal = params[4];
 
   Avatar showAvatar({double width = 45.0}) {
-    final avatar = Global.avatarPath + this.gid + '.png';
+    final avatar = Global.avatarPath + "${this.gid}.png";
     return Avatar(width: width, name: this.name, avatarPath: avatar);
   }
 }
diff --git a/lib/session.dart b/lib/session.dart
index f2f1a09..9f498ea 100644
--- a/lib/session.dart
+++ b/lib/session.dart
@@ -150,10 +150,10 @@ class Session {
     String avatar = Global.avatarPath;
     switch (this.type) {
       case SessionType.Chat:
-        avatar + this.pid + '.png';
+        avatar = avatar + this.pid + '.png';
         break;
       case SessionType.Group:
-        avatar + 'group_' + this.pid + '.png';
+        avatar = avatar + 'group_' + this.pid + '.png';
         break;
       default:
         break;
diff --git a/lib/widgets/qr_scan.dart b/lib/widgets/qr_scan.dart
index 551b30e..47f88ac 100644
--- a/lib/widgets/qr_scan.dart
+++ b/lib/widgets/qr_scan.dart
@@ -25,8 +25,9 @@ class _QRScanState extends State<QRScan> {
     super.reassemble();
     if (Platform.isAndroid) {
       controller?.pauseCamera();
+    } else if (Platform.isIOS) {
+      controller?.resumeCamera();
     }
-    controller?.resumeCamera();
   }
 
   @override
@@ -109,10 +110,8 @@ class _QRScanState extends State<QRScan> {
     );
   }
 
-  void _onQRViewCreated(QRViewController controller) {
-    setState(() {
-      this.controller = controller;
-    });
+  void _onQRViewCreated(QRViewController controller) async {
+    this.controller = controller;
     controller.scannedDataStream.listen((scanData) async {
       if (scanData.code == null) {
         return;
@@ -122,14 +121,14 @@ class _QRScanState extends State<QRScan> {
         // TODO show Error.
         return;
       }
-      await controller.pauseCamera();
+      await this.controller?.pauseCamera();
       widget.callback(true, qrInfo["app"], qrInfo["params"]);
     });
   }
 
   @override
   void dispose() {
-    controller?.dispose();
+    this.controller?.dispose();
     super.dispose();
   }
 }
diff --git a/lib/widgets/user_info.dart b/lib/widgets/user_info.dart
index e2e2d45..bbaf43f 100644
--- a/lib/widgets/user_info.dart
+++ b/lib/widgets/user_info.dart
@@ -84,9 +84,9 @@ class _UserInfoState extends State<UserInfo> {
                 foregroundColor: Colors.black,
               ),
               Container(
-                height: 44,
-                width: 44,
-                padding: EdgeInsets.all(2.0),
+                height: 40,
+                width: 40,
+                padding: EdgeInsets.all(1.0),
                 decoration: BoxDecoration(
                   borderRadius: BorderRadius.circular(10.0),
                   border: Border.all(color: Color(0x40ADB0BB)),
diff --git a/pubspec.lock b/pubspec.lock
index 0af9d9d..c0b77fc 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -154,7 +154,7 @@ packages:
       name: device_info_plus
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.2.2"
+    version: "3.2.3"
   device_info_plus_linux:
     dependency: transitive
     description:
@@ -168,7 +168,7 @@ packages:
       name: device_info_plus_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.2"
+    version: "2.2.3"
   device_info_plus_platform_interface:
     dependency: transitive
     description:
@@ -306,7 +306,7 @@ packages:
       name: flutter_inappwebview
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.3.2"
+    version: "5.4.1"
   flutter_keyboard_visibility:
     dependency: transitive
     description:
@@ -360,7 +360,7 @@ packages:
       name: flutter_native_splash
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.2+1"
+    version: "2.1.6"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -374,7 +374,7 @@ packages:
       name: flutter_quill
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.1.0"
+    version: "4.1.3"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -404,6 +404,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.3.2"
+  get_it:
+    dependency: transitive
+    description:
+      name: get_it
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "7.2.0"
   gettext_parser:
     dependency: transitive
     description:
@@ -459,6 +466,13 @@ packages:
       name: image_picker
       url: "https://pub.dartlang.org"
     source: hosted
+    version: "0.8.5"
+  image_picker_android:
+    dependency: transitive
+    description:
+      name: image_picker_android
+      url: "https://pub.dartlang.org"
+    source: hosted
     version: "0.8.4+11"
   image_picker_for_web:
     dependency: transitive
@@ -467,6 +481,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.6"
+  image_picker_ios:
+    dependency: transitive
+    description:
+      name: image_picker_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.8.5"
   image_picker_platform_interface:
     dependency: transitive
     description:
@@ -521,6 +542,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.4.7"
+  lint:
+    dependency: transitive
+    description:
+      name: lint
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.2"
   lints:
     dependency: transitive
     description:
@@ -555,7 +583,7 @@ packages:
       name: msix
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.4.1"
+    version: "3.5.1"
   nested:
     dependency: transitive
     description:
@@ -945,7 +973,7 @@ packages:
       name: url_launcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.0.20"
+    version: "6.1.0"
   url_launcher_android:
     dependency: transitive
     description:
@@ -1015,7 +1043,7 @@ packages:
       name: video_player
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.0"
+    version: "2.4.0"
   video_player_android:
     dependency: transitive
     description:
@@ -1029,21 +1057,21 @@ packages:
       name: video_player_avfoundation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.1"
+    version: "2.3.2"
   video_player_platform_interface:
     dependency: transitive
     description:
       name: video_player_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.1.1"
+    version: "5.1.2"
   video_player_web:
     dependency: transitive
     description:
       name: video_player_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.7"
+    version: "2.0.8"
   vm_service:
     dependency: transitive
     description:
diff --git a/src/apps/group/models/group.rs b/src/apps/group/models/group.rs
index 7433213..a4a086e 100644
--- a/src/apps/group/models/group.rs
+++ b/src/apps/group/models/group.rs
@@ -35,7 +35,7 @@ pub(crate) struct GroupChat {
 impl GroupChat {
     pub fn new(addr: PeerId, name: String) -> Self {
         let mut rng = ChaChaRng::from_entropy();
-        let gid = rng.next_u64();
+        let gid = rng.next_u64() >> 1; // fixed i64
 
         Self {
             gid,
diff --git a/src/apps/group/rpc.rs b/src/apps/group/rpc.rs
index 1c960f4..76f3138 100644
--- a/src/apps/group/rpc.rs
+++ b/src/apps/group/rpc.rs
@@ -175,12 +175,12 @@ pub(crate) fn new_rpc_handler(handler: &mut RpcHandler<Global>) {
             let mut msg = crate::group::Message::new(&pid, f.id, true, m_type, raw, false);
             msg.insert(&chat_db)?;
             let event = crate::group::GroupEvent::Message(msg.hash, nm);
-            let tid = state.layer.write().await.delivery(msg.id);
+            let tid = state.group.write().await.delivery(msg.id);
             let data = bincode::serialize(&event).unwrap_or(vec![]);
             results.groups.push(SendType::Event(tid, f.pid, data));
 
             // update session.
-            crate::group::update_session(&s_db, &id, &msg, &mut results);
+            crate::group::update_session(&s_db, &fid, &msg, &mut results);
 
             // handle group member
             let avatar = read_avatar(&state.base, &pid, &f.pid)
diff --git a/src/group/mod.rs b/src/group/mod.rs
index 77b7299..b4ae14d 100644
--- a/src/group/mod.rs
+++ b/src/group/mod.rs
@@ -78,7 +78,7 @@ impl Group {
         Group {
             sessions: HashMap::new(),
             delivery: HashMap::new(),
-            delivery_count: 0,
+            delivery_count: 1,
         }
     }
 
@@ -92,7 +92,7 @@ impl Group {
     pub fn clear(&mut self) {
         self.sessions.clear();
         self.delivery.clear();
-        self.delivery_count = 0;
+        self.delivery_count = 1;
     }
 
     pub fn add(&mut self, pid: PeerId, sid: i64, fid: i64, h: i64) {
diff --git a/src/group/models.rs b/src/group/models.rs
index afc484d..94c689a 100644
--- a/src/group/models.rs
+++ b/src/group/models.rs
@@ -9,7 +9,7 @@ pub(crate) use self::request::Request;
 use esse_primitives::{id_from_str, id_to_str, MessageType, NetworkMessage};
 use group_types::GroupChatId;
 use std::path::PathBuf;
-use tdn::types::primitives::{HandleResult, PeerId, Result};
+use tdn::types::primitives::{HandleResult, PeerId, Result, PEER_ID_LENGTH};
 
 use crate::apps::group::GroupChat;
 use crate::rpc::session_create;
@@ -52,7 +52,7 @@ pub(crate) async fn from_network_message(
         }
         NetworkMessage::Invite(content) => {
             // check is Tmp group.
-            let itype = InviteType::deserialize(&content)?;
+            let itype = InviteType::deserialize(&content).unwrap();
             match itype {
                 InviteType::Group(gcd, addr, name) => {
                     // 1 add group chat.
@@ -223,19 +223,20 @@ impl InviteType {
     pub fn deserialize(s: &str) -> Result<InviteType> {
         match &s[0..3] {
             "0;;" => {
-                if s.len() < 103 {
-                    // 16(gid) + 64(pid) + 7
-                    Err(anyhow!("invite invalid"))
+                if s.len() < 63 {
+                    // 16(gid) + 40(pid) + 7
+                    Err(anyhow!("invite group invalid"))
                 } else {
+                    let bytes = &s[3..];
                     let mut gid_bytes = [0u8; 8];
-                    gid_bytes.copy_from_slice(&hex::decode(&s[3..19])?);
+                    gid_bytes.copy_from_slice(&hex::decode(&bytes[0..16])?);
                     let gid = GroupChatId::from_le_bytes(gid_bytes);
-                    let addr = PeerId::from_hex(&s[22..86])?;
-                    let name = s[88..].to_owned();
+                    let addr = PeerId::from_hex(&bytes[18..(PEER_ID_LENGTH * 2 + 18)])?;
+                    let name = bytes[(PEER_ID_LENGTH * 2 + 20)..].to_owned();
                     Ok(InviteType::Group(gid, addr, name))
                 }
             }
-            _ => Err(anyhow!("invite invalid")),
+            _ => Err(anyhow!("invite type invalid")),
         }
     }
 }