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    Last updated: 2024-07-05 18:11:36
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      Feature Description

      The SDK on v6.3 or later provides the user status management feature. Each user has two statuses:
      General status. It is preset in the SDK and cannot be modified.
      Custom status. It can be customized and modified by users. For example, it can be set to "Listening to music" or "On the call".
      
      The general user status is available in the following 3 types:
      Online (ONLINE): The current user has logged in and can receive and send messages.
      Offline (OFFLINE): The user didn't call logout (Android / iOS and macOS / Windows) to log out, and the persistent connection is disconnected. In general, the user can receive offline push messages.
      Not logged in (UNLOGINED): The user hasn't logged in since registration or has called logout to log out.
      
      Keep the following in mind in terms of the offline status:
      1. An account will be in the offline status if the application is killed or the network is disconnected abnormally (such as due to 4G/Wi-Fi switch or a weak signal in an elevator) when the application is being logged in.
      2. An account will be in the offline status if the application process is killed after the user logs in to the application and clicks the Home button to enter the background. An account will be in the online status if the application process is kept alive in the background.
      3. Switching between the online and offline statuses relies on the TCP persistent connection between the IM SDK and the backend. If the client is in airplane mode, the network is completely disconnected, or if not supported by certain device vendors, TCP FIN or RST packets may fail to be sent, and the offline status cannot be switched to immediately. As the backend cannot receive heartbeat packets, it will set the current user status to offline 400 seconds later.
      Note:
      1. User status is relevant to the current user but not the device. If an account is logged in on multiple devices at the same time, the status cannot be queried or set by device.
      2. Some of the following features are supported only by the Premium edition.
      3. Some of the features mentioned below require enabling the Console switch for Set user status query and status change notification. The switch path is: Applications > Your App > Chat > Configuration > Login and Message > Set user status query and status change notification.

      Effect

      You can use this feature to display the online status and custom statuses of users in your App, as shown in the effect picture below:
      
      
      

      Setting Self Status

      Call the setSelfStatus API (Android / iOS and macOS / Windows) to set a user's own custom status through the customStatus field. If you have called addIMSDKListener (Android / iOS and macOS / Windows) to add a SDK listener, the onUserStatusChanged callback (Android / iOS and macOS / Windows) will be triggered after the field is set successfully.
      For more information, see Status Change Notification.
      The following describes how to clear the custom status:
      1. When calling the setSelfStatus API, you can leave the customStatus field empty to clear the status.
      2. When the SDK notices that the current account is in the offline status, it will automatically clear the custom status and trigger the status change notification.
      Note
      1. To call setSelfStatus, you don't need to upgrade to the Premium edition or enable the feature in the console.
      2. The customStatus is up to 100 bytes.
      3. This API can be called an unlimited number of times.
      Sample code:
      Android
      iOS and macOS
      Windows
      V2TIMUserStatus status = new V2TIMUserStatus();
      boolean clearStatus = true;
      if (clearStatus) {
            status.setCustomStatus(null);
      } else {
            status.setCustomStatus("listening to music");
      }
      V2TIMManager.getInstance().setSelfStatus(status, new V2TIMCallback() {
          @Override
          public void onSuccess() {
              Log.i(TAG, "setSelfStatus succeed, CustomStatus is " + status.getCustomStatus());
          }
      
          @Override
          public void onError(int code, String desc) {
              Log.e(TAG, "setSelfStatus error code = " + code + ", desc = " + desc);
          }
      });
      V2TIMUserStatus *status = [[V2TIMUserStatus alloc] init];
      BOOL clearStatus = YES;
      if (clearStatus) {
          status.customStatus = nil;
      } else {
          status.customStatus = @"listening to music";
      }
      [V2TIMManager.sharedInstance setSelfStatus:status
                                            succ:^{
          NSLog(@"setSelfStatus succeed, customStatus: %@", status.customStatus);
      } fail:^(int code, NSString *desc) {
          NSLog(@"setSelfStatus error, code: %d, desc: %@", code, desc);
      }];
      class Callback final : public V2TIMCallback {
      public:
          using SuccessCallback = std::function<void()>;
          using ErrorCallback = std::function<void(int, const V2TIMString&)>;
      
          Callback() = default;
          ~Callback() override = default;
      
          void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
              success_callback_ = std::move(success_callback);
              error_callback_ = std::move(error_callback);
          }
      
          void OnSuccess() override {
              if (success_callback_) {
                  success_callback_();
              }
          }
          void OnError(int error_code, const V2TIMString& error_message) override {
              if (error_callback_) {
                  error_callback_(error_code, error_message);
              }
          }
      
      private:
          SuccessCallback success_callback_;
          ErrorCallback error_callback_;
      };
      
      V2TIMUserStatus status;
      bool clearStatus = true;
      status.customStatus = clearStatus ? {} : "listening to music";
      
      auto callback = new Callback{};
      callback->SetCallback(
          [=]() {
              // Set the user's own status successfully
              delete callback;
          },
          [=](int error_code, const V2TIMString& error_message) {
              // Failed to set to the status
              delete callback;
          });
      
      V2TIMManager::GetInstance()->SetSelfStatus(status, callback);

      Querying the User Status

      Call the getUserStatus API (Android / iOS and macOS / Windows) to query the status of the current user or another user. The API will return the general status and custom status of the queried user.

      Querying a User's Own Status

      Users can call getUserStatus and set userIDList to their own userID to query their own status.
      Note
      1. To allow users to query their own status, you don't need to upgrade to the Premium edition or enable the feature in the console.
      2. This API can be called an unlimited number of times.
      Sample code:
      Android
      iOS and macOS
      Windows
      String loginUserID = V2TIMManager.getInstance().getLoginUser();
      if (loginUserID == null || loginUserID.isEmpty()) {
          return;
      }
      List<String> ids = Arrays.asList(loginUserID);
      V2TIMManager.getInstance().getUserStatus(ids, new V2TIMValueCallback<List<V2TIMUserStatus>>() {
          @Override
          public void onSuccess(List<V2TIMUserStatus> v2TIMUserStatuses) {
              // Queried the user's own status successfully
          }
      
          @Override
          public void onError(int code, String desc) {
              // Failed to query the user's own status
          }
      });
      NSString *loginUserID = V2TIMManager.sharedInstance.getLoginUser;
      if (loginUserID == nil || loginUserID.length == 0) {
          return;
      }
      [V2TIMManager.sharedInstance getUserStatus:@[loginUserID]
                                            succ:^(NSArray<V2TIMUserStatus *> *result) {
          // Queried the user's own status successfully
      } fail:^(int code, NSString *desc) {
          // Failed to query the user's own status
      }];
      template <class T>
      class ValueCallback final : public V2TIMValueCallback<T> {
      public:
          using SuccessCallback = std::function<void(const T&)>;
          using ErrorCallback = std::function<void(int, const V2TIMString&)>;
      
          ValueCallback() = default;
          ~ValueCallback() override = default;
      
          void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
              success_callback_ = std::move(success_callback);
              error_callback_ = std::move(error_callback);
          }
      
          void OnSuccess(const T& value) override {
              if (success_callback_) {
                  success_callback_(value);
              }
          }
          void OnError(int error_code, const V2TIMString& error_message) override {
              if (error_callback_) {
                  error_callback_(error_code, error_message);
              }
          }
      
      private:
          SuccessCallback success_callback_;
          ErrorCallback error_callback_;
      };
      
      V2TIMString loginUser = V2TIMManager::GetInstance()->GetLoginUser();
      if (!loginUser.Empty()) {
          V2TIMStringVector userIDList;
          userIDList.PushBack(loginUser);
      
          auto callback = new ValueCallback<V2TIMUserStatusVector>{};
          callback->SetCallback(
              [=](const V2TIMUserStatusVector& userStatusList) {
                  // Queried the user's own status successfully
                  delete callback;
              },
              [=](int error_code, const V2TIMString& error_message) {
                  // Failed to query the user's own status
                  delete callback;
              });
      
          V2TIMManager::GetInstance()->GetUserStatus(userIDList, callback);
      }

      Querying Other User's Status

      A user can set userIDList to the list of the userID values of other users to query their statuses.
      Note
      1. Querying the status of other users requires the Purchase Premium Edition.
      2. To query the status of other users, you need to activate the switch Set user status query and status change notification in the Console in advance. The switch path is: Applications > Your App > Chat > Configuration > Login and Message. If the switch is off, calling getUserStatus will result in an error.
      3. By default, this API can be called 20 times every 5 seconds, and the statuses of up to 500 users can be queried at a time.
      Sample code:
      Android
      iOS and macOS
      Windows
      List<String> ids = Arrays.asList("userid1", "userid2", "userid3");
      V2TIMManager.getInstance().getUserStatus(ids, new V2TIMValueCallback<List<V2TIMUserStatus>>() {
          @Override
          public void onSuccess(List<V2TIMUserStatus> v2TIMUserStatuses) {
              // Queried the status successfully
          }
      
          @Override
          public void onError(int code, String desc) {
              // Failed to query the status
          }
      });
      [V2TIMManager.sharedInstance getUserStatus:@[@"userid1", @"userid2", @"userid3"] succ:^(NSArray<V2TIMUserStatus *> *result) {
          // Queried the status successfully
      } fail:^(int code, NSString *desc) {
          // Failed to query the status
      }];
      template <class T>
      class ValueCallback final : public V2TIMValueCallback<T> {
      public:
          using SuccessCallback = std::function<void(const T&)>;
          using ErrorCallback = std::function<void(int, const V2TIMString&)>;
      
          ValueCallback() = default;
          ~ValueCallback() override = default;
      
          void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
              success_callback_ = std::move(success_callback);
              error_callback_ = std::move(error_callback);
          }
      
          void OnSuccess(const T& value) override {
              if (success_callback_) {
                  success_callback_(value);
              }
          }
          void OnError(int error_code, const V2TIMString& error_message) override {
              if (error_callback_) {
                  error_callback_(error_code, error_message);
              }
          }
      
      private:
          SuccessCallback success_callback_;
          ErrorCallback error_callback_;
      };
      
      V2TIMStringVector userIDList;
      userIDList.PushBack("userid1");
      userIDList.PushBack("userid2");
      
      auto callback = new ValueCallback<V2TIMUserStatusVector>{};
      callback->SetCallback(
          [=](const V2TIMUserStatusVector& userStatusList) {
              // Queried the status successfully
              delete callback;
          },
          [=](int error_code, const V2TIMString& error_message) {
              // Failed to query the status
              delete callback;
          });
      
      V2TIMManager::GetInstance()->GetUserStatus(userIDList, callback);

      Subscribing to the User Status

      Call the subscribeUserStatus API (Android / iOS and macOS / Windows) to subscribe to the status of the specified user. By default, the IM SDK supports subscribing to the statuses of up to 200 users. After this limit is exceeded, the earliest subscribed user statuses will be removed. When the user status (including general status and custom status) subscribed to changes, the status change notification can be received in the onUserStatusChanged callback (Android / iOS and macOS / Windows).
      API features:
      1. This API doesn't support subscribing to a user's own status, which can be obtained in the onUserStatusChanged callback. For more information, see Status Change Notification.
      2. This API supports subscribing to the status of a friend, which will occupy the quota of 200 mentioned above.
      To get the changes in the statuses of all of a user's friends, you don't need to call this API, and you can enable automatic notifications of friends' statuses in the Console, after which a status change notification can be received in the onUserStatusChanged callback.
      To get the changes in the statuses of some of a user's friends, you can only call subscribeUserStatus for subscription, after which a status change notification can be received in the onUserStatusChanged callback.
      Note
      1. Subscribing to user status requires the Purchase Premium Edition.
      2. To subscribe to user status, you must first enable the Set user status query and status change notification toggle in the Console. The toggle path: Applications > Your App > Chat > Configuration > Login and Message. If the toggle is off, calling subscribeUserStatus will result in an error.
      3. By default, this API can be called 20 times every five seconds, and the statuses of up to 100 users can be subscribed to at a time.
      Sample code:
      Android
      iOS and macOS
      Windows
      List<String> useridList = Arrays.asList("userid1", "userid2", "userid3");
      V2TIMManager.getInstance().subscribeUserStatus(useridList, new V2TIMCallback() {
          @Override
          public void onSuccess() {
              // Subscribed to the status successfully
          }
      
          @Override
          public void onError(int code, String desc) {
              // Failed to subscribe to the status
          }
      });
      [V2TIMManager.sharedInstance subscribeUserStatus:@[@"userid1", @"userid2", @"userid3"] succ:^ {
              // Subscribed to the status successfully
      } fail:^(int code, NSString *desc) {
              // Failed to subscribe to the status
      }];
      class Callback final : public V2TIMCallback {
      public:
          using SuccessCallback = std::function<void()>;
          using ErrorCallback = std::function<void(int, const V2TIMString&)>;
      
          Callback() = default;
          ~Callback() override = default;
      
          void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
              success_callback_ = std::move(success_callback);
              error_callback_ = std::move(error_callback);
          }
      
          void OnSuccess() override {
              if (success_callback_) {
                  success_callback_();
              }
          }
          void OnError(int error_code, const V2TIMString& error_message) override {
              if (error_callback_) {
                  error_callback_(error_code, error_message);
              }
          }
      
      private:
          SuccessCallback success_callback_;
          ErrorCallback error_callback_;
      };
      
      V2TIMStringVector userIDList;
      userIDList.PushBack(u8"userid1");
      userIDList.PushBack(u8"userid2");
      
      auto callback = new Callback{};
      callback->SetCallback(
          [=]() {
              // Subscribed to the status successfully
              delete callback;
          },
          [=](int error_code, const V2TIMString& error_message) {
              // Subscribed to the status successfully
              delete callback;
          });
      
      V2TIMManager::GetInstance()->SubscribeUserStatus(userIDList, callback);

      Unsubscribing from the User Status

      To stop receiving notifications of changes in user statuses, call the unsubscribeUserStatus API (Android / iOS and macOS / Windows) to unsubscribe from the user status or clear the subscription list. If you do not manually clear your subscription list, your account's subscription relationships will automatically be cancelled after a long period of offline time (for example: if you do not log in again within 24 hours).
      Restrictions for unsubscribing user status are consistent with restrictions for subscribing user status.
      Android
      iOS
      Windows
      List<String> useridList = Arrays.asList("userid1", "userid2", "userid3");
      V2TIMManager.getInstance().unsubscribeUserStatus(useridList, new V2TIMCallback() {
          @Override
          public void onSuccess() {
              // Unsubscribed from the status successfully
          }
      
          @Override
          public void onError(int code, String desc) {
              // Failed to unsubscribe from the status
          }
      });
      [V2TIMManager.sharedInstance unsubscribeUserStatus:@[@"userid1", @"userid2", @"userid3"] succ:^ {
              // Unsubscribed from the status successfully
      } fail:^(int code, NSString *desc) {
              // Failed to unsubscribe from the status
      }];
      class Callback final : public V2TIMCallback {
      public:
          using SuccessCallback = std::function<void()>;
          using ErrorCallback = std::function<void(int, const V2TIMString&)>;
      
          Callback() = default;
          ~Callback() override = default;
      
          void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
              success_callback_ = std::move(success_callback);
              error_callback_ = std::move(error_callback);
          }
      
          void OnSuccess() override {
              if (success_callback_) {
                  success_callback_();
              }
          }
          void OnError(int error_code, const V2TIMString& error_message) override {
              if (error_callback_) {
                  error_callback_(error_code, error_message);
              }
          }
      
      private:
          SuccessCallback success_callback_;
          ErrorCallback error_callback_;
      };
      
      V2TIMStringVector userIDList;
      userIDList.PushBack(u8"userid1");
      userIDList.PushBack(u8"userid2");
      
      auto callback = new Callback{};
      callback->SetCallback(
          [=]() {
              // Unsubscribed from the status successfully
              delete callback;
          },
          [=](int error_code, const V2TIMString& error_message) {
              // Failed to unsubscribe from the status
              delete callback;
          });
      
      V2TIMManager::GetInstance()->UnsubscribeUserStatus(userIDList, callback);

      Status Change Notification

      Depending on the user type, status changes can be divided into three types:
      1. Change in a user's own status.
      2. Change in a friend's status.
      3. Change in a non-friend user's status.
      Notifications on all these status changes can be called back through onUserStatusChanged (Android / iOS and Mac / Windows), but different types of users trigger the notification differently.

      User's Own Status Changed

      If you have called addIMSDKListener to add an SDK listener, after a user's own status is set successfully, when the status changes, the onUserStatusChanged callback will be triggered, where the user can get the latest own status.

      Friend's Status Changed

      1. If you have enabled automatic notifications of friends' statuses in the Console, when the status of a user's friend changes, the onUserStatusChanged callback will be automatically triggered.
      2. If you don't enable automatic notifications of friends' statuses and want to get friends' status changes, you need to call subscribeUserStatus to subscribe to friends' statuses. When a friend's status changes, the onUserStatusChanged callback will be automatically triggered.
      The use of subscribeUserStatus is limited, refer to Subscriber Status above for details.
      3. If you neither enable automatic notifications of friends' statuses nor call subscribeUserStatus to subscribe to friends' statuses, changes in friends' statuses cannot be obtained.

      Non-friend User's Status Changed

      To get the change in a non-friend user's status, you can only call subscribeUserStatus to subscribe to the status. When the user's status changes, the onUserStatusChanged callback will be triggered, where the user can get the latest status of the non-friend user.
      The use of subscribeUserStatus is limited, refer to Subscriber Status above for details.
      Sample code:
      Android
      iOS and macOS
      Windows
      private void initListener() {
          V2TIMSDKListener v2TIMSDKListener = new V2TIMSDKListener() {
              @Override
              public void onUserStatusChanged(List<V2TIMUserStatus> userStatusList) {
                  String myselfUserID = V2TIMManager.getInstance().getLoginUser();
                  for (V2TIMUserStatus item : userStatusList) {
                      if (item.getUserID().equals(myselfUserID)) {
                          // The user's own status changed.
                      } else {
                          // The status of another user changed.
                      }
                  }
              }
          };
          V2TIMManager.getInstance().addIMSDKListener(v2TIMSDKListener);
      }
      // Adding a listener
      [V2TIMManager.sharedInstance addIMSDKListener:self];
      
      // Notification callback
      - (void)onUserStatusChanged:(NSArray<V2TIMUserStatus *> *)userStatusList {
          NSString *myselfUserID = V2TIMManager.sharedInstance.getLoginUser;
          for (V2TIMUserStatus *userStatus in userStatusList) {
              if ([userStatus.userID isEqualToString:myselfUserID]) {
                  // The user's own status changed.
              } else {
                  // The status of another user changed.
              }
          }
      }
      class SDKListener final : public V2TIMSDKListener {
      public:
          SDKListener() = default;
          ~SDKListener() override = default;
      
          // User status change notification
          void OnUserStatusChanged(const V2TIMUserStatusVector& userStatusList) override {
              V2TIMString myselfUserID = V2TIMManager::GetInstance()->GetLoginUser();
              for (size_t i = 0; i < userStatusList.Size(); ++i) {
                  if (myselfUserID == userStatusList[i].userID) {
                      // The user's own status changed.
                  } else {
                      // The status of another user changed.
                  }
              }
          }
      };
      
      // Note that `sdkListener` should not be released before the IM SDK is uninitialized,
      // otherwise the message callback cannot be called.
      SDKListener sdkListener;
      V2TIMManager::GetInstance()->AddSDKListener(&sdkListener);

      Multi-client Sync of Status Change Notifications

      If you have enabled multi-client login (for more information, see Feature Configuration), an account can be logged in on different clients. When the status of the user logged in on one of the clients changes, the backend will send the onUserStatusChanged notification (Android / iOS and macOS / Windows) to other logged-in clients.

      API Restrictions

      Plan Restrictions

      You don't need to upgrade to the Premium edition to use the setSelfStatus API.
      You don't need to upgrade to the Premium edition to use the getUserStatus API to query a user's own status.
      You need to upgrade to the Premium edition to use the getUserStatus API to query another user's status.
      You need to upgrade to the Premium edition to use the subscribeUserStatus / unsubscribeUserStatus API.

      API Call Frequency Limit

      The setSelfStatus API can be called an unlimited number of times.
      The getUserStatus API is used to query a user's own status and can be called an unlimited number of times.
      By default, the getUserStatus API can be called 20 times every five seconds if used to query the status of another user, and the statuses of up to 500 users can be queried at a time.
      By default, the subscribeUserStatus API can be called 20 times every five seconds, and the statuses of up to 100 users can be subscribed to at a time.
      By default, the unsubscribeUserStatus API can be called 20 times every five seconds, and up to 100 users can be unsubscribed from at a time.

      FAQs

      What should I do if error code 72001 is reported when I call the subscribe/unsubscribe API?
      Error code 72001 indicates that the feature is not enabled in the console. You need to log in to the Console and enable the feature.
      
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