====== SDK 2.x 至 3.0 升级指南 ====== ----- =====环信 SDK 3.0 升级文档===== 3.0 中的核心类为 EMClient 类，通过 EMClient 类可以获取到 chatManager、groupManager、contactManager、roomManager对象。原来 2.0 版本的 SDK 很多方法提供了同步、异步回调、异步（block）三种方法，3.0 版只提供同步方法和异步block方法。 例如： //2.0版本登录方法，提供了同步、异步、异步block三种方法 - (NSDictionary *)loginWithUsername:(NSString *)username password:(NSString *)password error:(EMError **)pError; - (void)asyncLoginWithUsername:(NSString *)username password:(NSString *)password; - (void)asyncLoginWithUsername:(NSString *)username password:(NSString *)password completion:(void (^)(NSDictionary *loginInfo, EMError *error))completion onQueue:(dispatch_queue_t)aQueue; //3.0版本，网络请求的方法提供了同步方法和异步block方法 - (EMError *)loginWithUsername:(NSString *)aUsername password:(NSString *)aPassword; - (void)loginWithUsername:(NSString *)aUsername password:(NSString *)aPassword completion:(void (^)(NSString *aUsername, EMError *aError))aCompletionBlock; 注册回调，3.0 SDK 对功能进行了模块化，将不同功能回调封装到不同模块。 //2.0版本回调注册 [[EaseMob sharedInstance].chatManager addDelegate:self delegateQueue:nil]; //3.0版本回调注册需要分模块注册 [[EMClient sharedClient] addDelegate:self delegateQueue:nil];//登录相关的回调 [[EMClient sharedClient].groupManager addDelegate:self delegateQueue:nil];//群组回调 [[EMClient sharedClient].contactManager addDelegate:self delegateQueue:nil];//联系人回调 [[EMClient sharedClient].roomManager addDelegate:self delegateQueue:nil];//聊天室回调 [[EMClient sharedClient].chatManager addDelegate:self delegateQueue:nil];//消息回调 =====代码升级替换文档===== 3.0 SDK 大部分代码与 2.0 SDK 比较，逻辑没有变化，为了统一修改了名称。 入口的变化，2.0 版本 [EaseMob shareInstance] -> 3.0 版本 [EMClient sharedClient]。

2.0版本 EaseMob
3.0版本 EMClient

登录相关

当前登录的用户信息
[[[EaseMob sharedInstance] chatManager] loginInfo];
只提供当前登录账号
[[EMClient sharedClient] currentUsername];

当前是否已有登录的用户
[[[EaseMob sharedInstance] chatManager] isLoggedIn];
当前是否已有登录的用户
[[EMClient sharedClient] isLoggedIn];

是否连上聊天服务器
[[[EaseMob sharedInstance] chatManager] isConnected];
是否连上聊天服务器
[[EMClient sharedClient] isConnected];

将数据库数据导入新的数据库
[[EaseMob sharedInstance].chatManager importDataToNewDatabase];
升级到SDK 3.0版本需要调用该方法，开发者需要等该方法执行完后再进行数据库查询操作
[[EMClient sharedClient] dataMigrationTo3];

从数据库获取信息
[[EaseMob sharedInstance].chatManager loadDataFromDatabase];
分别从不同模块获取
[[EMClient sharedClient].chatManager getAllConversations];

在聊天服务器上创建账号
- (BOOL)registerNewAccount:(NSString *)username password:(NSString *)password error:(EMError **)pError;
- (void)asyncRegisterNewAccount:(NSString *)username password:(NSString *)password;
- (void)asyncRegisterNewAccount:(NSString *)username password:(NSString *)password withCompletion:(void (^)(NSString *username,NSString *password,EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
在聊天服务器上创建账号
[[EMClient sharedClient] registerWithUsername:@"username"password:@"password"];
[[EMClient sharedClient] registerWithUsername:@"username"password:@"password" completion:block];

使用用户名密码登录聊天服务器
- (NSDictionary *)loginWithUsername:(NSString *)username password:(NSString *)password error:(EMError **)pError;
- (void)asyncLoginWithUsername:(NSString *)username password:(NSString *)password;
- (void)asyncLoginWithUsername:(NSString *)username password:(NSString *)password completion:(void (^)(NSDictionary *loginInfo, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
使用用户名密码登录聊天服务器
[[EMClient sharedClient] loginWithUsername:@"username" password:@"password"];
[[EMClient sharedClient] loginWithUsername:@"username" password:@"password" completion:block];

注销当前登录用户
- (NSDictionary *)logoffWithUnbindDeviceToken:(BOOL)isUnbind error:(EMError **)pError;
- (void)asyncLogoffWithUnbindDeviceToken:(BOOL)isUnbind;
- (void)asyncLogoffWithUnbindDeviceToken:(BOOL)isUnbind completion:(void (^)(NSDictionary *info, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
注销当前登录用户
[[EMClient sharedClient] logout:NO];
[[EMClient sharedClient] logout:NO completionblock];

登录回调

2.0版本 EMChatManagerLoginDelegate
3.0版本 EMClientDelegate

用户将要进行自动登录操作
- (void)willAutoLoginWithInfo:(NSDictionary *)loginInfo error:(EMError *)error;
用户登录完成
- (void)didLoginWithInfo:(NSDictionary *)loginInfo error:(EMError *)error;
用户注销完成
- (void)didLogoffWithError:(EMError *)error;
注册新用户后的回调
- (void)didRegisterNewAccount:(NSString *)username password:(NSString *)password error:(EMError *)error;
不再支持相关回调

用户自动登录完成
- (void)didAutoLoginWithInfo:(NSDictionary *)loginInfo error:(EMError *)error;
用户自动登录完成
- (void)autoLoginDidCompleteWithError:(EMError *)error;

当前登录账号在其它设备登录
- (void)didLoginFromOtherDevice;
当前登录账号在其它设备登录
- (void)userAccountDidLoginFromOtherDevice；

当前登录账号已经被从服务器端删除
- (void)didRemovedFromServer;
当前登录账号已经被从服务器端删除
- (void)userAccountDidRemoveFromServer;

将要发起自动重连操作的回调
- (void)willAutoReconnect;
自动重连操作完成后的回调
- (void)didAutoReconnectFinishedWithError:(NSError *)error;
连接状态发生变化
- (void)didConnectionStateChanged:(EMConnectionState)connectionState；

消息相关

2.0版本 IChatManagerChat IChatManagerDelegate
3.0版本 IEMChatManager EMChatManagerDelegate

发送消息
- (EMMessage *)sendMessage:(EMMessage *)message progress:(id)progress error:(EMError **)pError;
- (EMMessage *)asyncSendMessage:(EMMessage *)message progress:(id)progress;
- (EMMessage *)asyncSendMessage:(EMMessage *)message progress:(id)progress prepare:(void (^)(EMMessage *message, EMError *error))prepare onQueue:(dispatch_queue_t)aPrepareQueue completion:(void (^)(EMMessage *message, EMError *error))completion onQueue:(dispatch_queue_t)aCompletionQueue;
发送消息
[IEMChatManager sendMessage:progress:completion:];

发送已读回执到服务器
- (void)sendReadAckForMessage:(EMMessage *)message;
发送已读回执到服务器
[IEMChatManager sendMessageReadAck:completion:];

重新发送消息
- (EMMessage *)resendMessage:(EMMessage *)message progress:(id)progress error:(EMError **)pError;
- (EMMessage *)asyncResendMessage:(EMMessage *)message progress:(id)progress;
- (EMMessage *)asyncResendMessage:(EMMessage *)message progress:(id)progress prepare:(void (^)(EMMessage *message, EMError *error))prepare onQueue:(dispatch_queue_t)aPrepareQueue completion:(void (^)(EMMessage *message, EMError *error))completion onQueue:(dispatch_queue_t)aCompletionQueue;
重新发送消息
[IEMChatManager resendMessage:progress:completion:]

聊天室相关

2.0版本 IChatManagerChatroom IChatManagerDelegate
3.0版本 IEMChatroomManager EMChatroomManagerDelegate EMChatroomOptions

主题
[EMChatroom chatroomSubject];
主题
[EMChatroom subject];

描述
[EMChatroom chatroomDescription];
描述
[EMChatroom description];

最大人数
[EMChatroom chatroomMaxOccupantsCount];
最大人数
[EMChatroom maxOccupantsCount];

群组相关

2.0版本 IChatManagerGroup IChatManagerDelegate
3.0版本 IEMGroupManager EMGroupManagerDelegate

从数据库获取与登录者相关的群组
- (NSArray *)loadAllMyGroupsFromDatabaseWithAppend2Chat:(BOOL)append2Chat;
获取用户所有群组
[IEMGroupManager getJoinedGroups];

创建群组
- (EMGroup *)createGroupWithSubject:(NSString *)subject description:(NSString *)description invitees:(NSArray *)invitees initialWelcomeMessage:(NSString *)welcomeMessage styleSetting:(EMGroupStyleSetting *)styleSetting error:(EMError **)pError;
- (void)asyncCreateGroupWithSubject:(NSString *)subject description:(NSString *)description invitees:(NSArray *)invitees initialWelcomeMessage:(NSString *)welcomeMessage styleSetting:(EMGroupStyleSetting *)styleSetting;
- (void)asyncCreateGroupWithSubject:(NSString *)subject description:(NSString *)description invitees:(NSArray *)invitees initialWelcomeMessage:(NSString *)welcomeMessage styleSetting:(EMGroupStyleSetting *)styleSetting completion:(void (^)(EMGroup *group, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
3.0版本
[IEMGroupManager createGroupWithSubject:description:invitees:message:setting:error:];
[IEMGroupManager createGroupWithSubject:description:invitees:message:setting:completion:];

创建匿名群组
- (EMGroup *)createAnonymousGroupWithSubject:(NSString *)subject description:(NSString *)description initialWelcomeMessage:(NSString *)welcomeMessage nickname:(NSString *)nickname styleSetting:(EMGroupStyleSetting *)styleSetting error:(EMError **)pError;
- (void)asyncCreateAnonymousGroupWithSubject:(NSString *)subject description:(NSString *)description initialWelcomeMessage:(NSString *)welcomeMessage nickname:(NSString *)nickname styleSetting:(EMGroupStyleSetting *)styleSetting;
- (void)asyncCreateAnonymousGroupWithSubject:(NSString *)subject description:(NSString *)description initialWelcomeMessage:(NSString *)welcomeMessage nickname:(NSString *)nickname styleSetting:(EMGroupStyleSetting *)styleSetting completion:(void (^)(EMGroup *group, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
不再提供

加入一个匿名公开群组
- (EMGroup *)joinAnonymousPublicGroup:(NSString *)groupId nickname:(NSString *)nickname error:(EMError **)pError;
- (void)asyncJoinAnonymousPublicGroup:(NSString *)groupId nickname:(NSString *)nickname;
- (void)asyncJoinAnonymousPublicGroup:(NSString *)groupId nickname:(NSString *)nickname completion:(void (^)(EMGroup *group, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
不再提供

退出群组
- (EMGroup *)leaveGroup:(NSString *)groupId error:(EMError **)pError;
- (void)asyncLeaveGroup:(NSString *)groupId;
- (void)asyncLeaveGroup:(NSString *)groupId completion:(void (^)(EMGroup *group, EMGroupLeaveReason reason, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
退出群组
[IEMGroupManager leaveGroup:error:];
[IEMGroupManager leaveGroup:completion:];

解散群组
- (EMGroup *)destroyGroup:(NSString *)groupId error:(EMError **)pError;
- (void)asyncDestroyGroup:(NSString *)groupId;
- (void)asyncDestroyGroup:(NSString *)groupId completion:(void (^)(EMGroup *group, EMGroupLeaveReason reason, EMError *error))completion onQueue:(dispatch_queue_t)aQueue;
解散群组
[IEMGroupManager destroyGroup:];
[IEMGroupManager destroyGroup: finishCompletion:];
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