Last updated: 2020-03-12 17:05:32PDF
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
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.
|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|
The IM SDK calls APIs in the following sequence, and other methods will be called after login succeeds.
|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)|