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Overview (iOS)

Last updated: 2020-03-12 17:05:32

    IM SDK Concepts

    Conversation: there are two types of conversations in the IM SDK. One is the C2C conversation, which is a one-to-one chat between users with messages read and sent within the conversation. The other is the group conversation, which is a group chat where all group members can receive messages.

    Message: a message in the IM SDK is the information to be sent to the recipient. A message includes properties such as whether it was read by yourself, whether it was sent successfully, the sender’s account, and the message generation time. A message consists of several Elems, which can be text, images, emojis, and others. A message can contain multiple Elems.

    Group ID: a group ID uniquely identifies a group. It is generated by the backend and returned when a group is created.

    Introduction to IM SDK Objects

    iOS IM SDK objects include the communication manager, conversation, message, and group management. The following table describes them in detail.

    Object Description Features
    TIMManager Manager Responsible for basic IM SDK operations such as initialization, login, logout, and creating conversations
    TIMConversation Conversation Responsible for conversation-related operations such as sending messages, obtaining cached conversation messages, and obtaining the unread count
    TIMMessage Message Support various message types including text and image messages
    TIMGroupManager Group manager Responsible for creating groups, adding and deleting members, and modifying group profiles
    TIMFriendshipManager Friend relationship chain manager Responsible for adding and deleting friends and managing friend profiles

    Calling Sequence

    The IM SDK calls APIs in the following sequence, and other methods will be called after login succeeds.

    Step Function Description
    Initialization TIMManager:initSdk Configure SDK settings
    Initialization TIMManager:setUserConfig Configure user settings
    Login TIMManager:login Log users in
    Receiving and sending messages TIMManager:getConversation Obtain conversations
    Receiving and sending messages TIMConversation:sendMessage Send messages
    Group management TIMGroupManager Manage groups
    Relationship chain management TIMFriendshipManager Manage relationship chains
    Logout TIMManager:logout Log users out (optional for users)
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