#import <ChatKit/LCChatKit.h>

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    ...
    // 如果APP是在国外使用，开启北美节点
    // 必须在 APPID 初始化之前调用，否则走的是中国节点。
    // [AVOSCloud setServiceRegion:AVServiceRegionUS];
    [LCChatKit  setAppId:LCCKAPPID  appKey:LCCKAPPKEY];
    // 启用未读消息
    [AVIMClient  setUnreadNotificationEnabled:true];

   //添加输入框底部插件，如需更换图标标题，可子类化，然后调用 `+registerSubclass`
   [LCCKInputViewPluginTakePhoto  registerSubclass];
   [LCCKInputViewPluginPickImage  registerSubclass];
   [LCCKInputViewPluginLocation  registerSubclass];
     ...
 }

 [[LCChatKit  sharedInstance] setFetchProfilesBlock:^(NSArray<NSString *> *userIds,
 LCCKFetchProfilesCompletionHandler completionHandler) {
 if (userIds.count == 0) {
 NSInteger code = 0;
 NSString *errorReasonText = @"User ids is nil";
 NSDictionary *errorInfo = @{
 @"code":@(code),
 NSLocalizedDescriptionKey : errorReasonText,
 };
  NSError *error = [NSError  errorWithDomain:NSStringFromClass([self  class])
 code:code
 userInfo:errorInfo];
 !completionHandler ?: completionHandler(nil, error);
 return;
 }
  NSMutableArray *users = [NSMutableArray  arrayWithCapacity:userIds.count];
 [userIds enumerateObjectsUsingBlock:^(NSString *_Nonnull clientId, NSUInteger idx,
 BOOL *_Nonnull stop) {
 NSPredicate *predicate = [NSPredicate predicateWithFormat:@"peerId like %@", clientId];
  //这里的LCCKContactProfiles，LCCKProfileKeyPeerId都为事先的宏定义，
 NSArray *searchedUsers = [LCCKContactProfiles filteredArrayUsingPredicate:predicate];
 if (searchedUsers.count > 0) {
 NSDictionary *user = searchedUsers[0];
 NSURL *avatarURL = [NSURL URLWithString:user[LCCKProfileKeyAvatarURL]];
 LCCKUser *user_ = [LCCKUser userWithUserId:user[LCCKProfileKeyPeerId]
 name:user[LCCKProfileKeyName]
 avatarURL:avatarURL
 clientId:clientId];
 [users addObject:user_];
 } else {
 LCCKUser *user_ = [LCCKUser userWithClientId:clientId];
 [users addObject:user_];
 }
 }];
 !completionHandler ?: completionHandler([users copy], nil);
 }];

LCCKConversationListViewController *firstViewController = [[LCCKConversationListViewController alloc] init];

// 用于单聊，默认会创建一个只包含两个成员的 unique 对话(如果已经存在则直接进入，不会重复创建)
LCCKConversationViewController *conversationViewController = [[LCCKConversationViewController alloc] initWithPeerId:peerId];

// 单聊或群聊，用于已经获取到一个对话基本信息的场合。
LCCKConversationViewController *conversationViewController = [[LCCKConversationViewController alloc] initWithConversationId:conversationId];

[[LCChatKit sharedInstance] setDidSelectConversationsListCellBlock:^(NSIndexPath *indexPath, AVIMConversation *conversation, LCCKConversationListViewController *controller) {
    NSLog(@"conversation selected");
    LCCKConversationViewController *conversationVC = [[LCCKConversationViewController alloc] initWithConversationId:conversation.conversationId];
    [controller.navigationController pushViewController:conversationVC animated:YES];
}];

/*!
 *  选中某个对话后的回调 (比较常见的需求)
 *  @param conversation 被选中的对话
 */
typedef void(^LCCKConversationsListDidSelectItemBlock)(NSIndexPath *indexPath, AVIMConversation *conversation, LCCKConversationListViewController *controller);
/*!
 *  设置选中某个对话后的回调
 */
- (void)setDidSelectConversationsListCellBlock:(LCCKConversationsListDidSelectItemBlock)didSelectItemBlock;

/*!
 *  删除某个对话后的回调 (一般不需要做处理)
 *  @param conversation 被选中的对话
 */
typedef void(^LCCKConversationsListDidDeleteItemBlock)(NSIndexPath *indexPath, AVIMConversation *conversation, LCCKConversationListViewController *controller);
/*!
 *  设置删除某个对话后的回调
 */
- (void)setDidDeleteConversationsListCellBlock:(LCCKConversationsListDidDeleteItemBlock)didDeleteItemBlock;

/*!
 *  对话左滑菜单设置block (最近联系人页面有复杂的手势操作时，可以通过这里扩展实现)
 *  @return  需要显示的菜单数组
 *  @param conversation, 对话
 *  @param editActions, 默认的菜单数组，成员为 UITableViewRowAction 类型
 */
typedef NSArray *(^LCCKConversationEditActionsBlock)(NSIndexPath *indexPath, NSArray<UITableViewRowAction *> *editActions, AVIMConversation *conversation, LCCKConversationListViewController *controller);
/*!
 *  可以通过这个block设置对话列表中每个对话的左滑菜单，这个是同步调用的，需要尽快返回，否则会卡住UI
 */
- (void)setConversationEditActionBlock:(LCCKConversationEditActionsBlock)conversationEditActionBlock;

 [[LCChatKit sharedInstance] setFetchConversationHandler:^(
                                                              AVIMConversation *conversation,
                                                              LCCKConversationViewController *aConversationController) {
    if (!conversation) {
        // 显示错误提示信息
        [conversationController alert:@"failed to create/load conversation."];
    } else {
        // 正常处理
    }
}];

typedef void(^LCCKBarButtonItemActionBlock)(void);

typedef NS_ENUM(NSInteger, LCCKBarButtonItemStyle) {
    LCCKBarButtonItemStyleSetting = 0,
    LCCKBarButtonItemStyleMore,
    LCCKBarButtonItemStyleAdd,
    LCCKBarButtonItemStyleAddFriends,
    LCCKBarButtonItemStyleShare,
    LCCKBarButtonItemStyleSingleProfile,
    LCCKBarButtonItemStyleGroupProfile,
};

- (void)configureBarButtonItemStyle:(LCCKBarButtonItemStyle)style action:(LCCKBarButtonItemActionBlock)action;

[aConversationController configureBarButtonItemStyle:LCCKBarButtonItemStyleGroupProfile
                                                          action:^(UIBarButtonItem *sender, UIEvent *event) {
    ConversationDetailViewController *detailVC = [[ConversationDetailViewController alloc] init];// 自己实现的对话详情页
    detailVC.conversation = conversation;
    [conversationController.navigationController pushViewController:detailVC animated:YES];
}];

pod "CYLTableViewRowAction", "1.0.0"

{"alert":"您有新的消息","badge":"Increment"}