tencent cloud

// 创建 SDK 实例（单例模式）并设置事件监听器
// Create trtc instance(singleton)  and set up event listeners
_trtcCloud = [TRTCCloud sharedInstance];
_trtcCloud.delegate = self;


// 创建 SDK 实例（单例模式）并设置事件监听器
// Create trtc instance(singleton)  and set up event listeners
trtc_cloud_ = getTRTCShareInstance();
trtc_cloud_->addCallback(this);


我们可以让自己的类继承 TRTCCloudDelegate，并重载 onError 函数，最后将 this 指针通过 TRTCCCloud 的 delegate 属性设置给 SDK，就可以在当前类中监听来自 SDK 的回调事件了。
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我们可以让自己的类继承 ITRTCCloudCallback，并重载 onError 函数，最后将 this 指针通过 addCallback 接口设置给 SDK，就可以在当前类中监听来自 SDK 的回调事件了。
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self.trtcCloud = [TRTCCloud sharedInstance];
self.trtcCloud.delegate = self;

// 组装 TRTC 进房参数，请将 TRTCParams 中的各字段都替换成您自己的参数
// Please replace each field in TRTCParams with your own parameters
TRTCParams *params = [[TRTCParams alloc] init];
params.sdkAppId = 1400000123;  // Please replace with your own SDKAppID
params.roomId = 123321; // Please replace with your own room number
params.userId = @"denny";   // Please replace with your own userid  
params.userSig = @"xxx"; // Please replace with your own userSig
params.role = TRTCRoleAnchor;

// 如果您的场景是“在线直播”，请将应用场景设置为 TRTC_APP_SCENE_LIVE
// If your application scenario is a video call between several people, please use "TRTC_APP_SCENE_LIVE"
[self.trtcCloud enterRoom:params appScene:TRTCAppSceneLIVE];


trtc_cloud_ = getTRTCShareInstance();
trtc_cloud_->addCallback(this);

// 组装 TRTC 进房参数，请将 TRTCParams 中的各字段都替换成您自己的参数
// Please replace each field in TRTCParams with your own parameters
liteav::TRTCParams params;
params.sdkAppId = 1400000123;  // Please replace with your own SDKAppID
params.userId = "denny";       // Please replace with your own userid  
params.roomId = 123321;        // Please replace with your own room number
params.userSig = "xxx";        // Please replace with your own userSig
params.role = liteav::TRTCRoleAnchor;

// 如果您的场景是“在线直播”，请将应用场景设置为 TRTC_APP_SCENE_LIVE
// If your application scenario is a video call between several people, please use "TRTC_APP_SCENE_LIVE"
trtc_cloud_->enterRoom(params, liteav::TRTCAppSceneLIVE);        


// 监听 SDK 的 onEnterRoom 事件并获知是否成功进入房间
// Listen to the onEnterRoom event of the SDK and learn whether the room is successfully entered
- (void)onEnterRoom:(NSInteger)result {
    if (result > 0) {
        [self toastTip:@"Enter room succeed!"];
    } else {
        [self toastTip:@"Enter room failed!"];
    }
}


// 监听 SDK 的 onEnterRoom 事件并获知是否成功进入房间
// override to the onEnterRoom event of the SDK and learn whether the room is successfully entered
void onEnterRoom(int result) {
    if (result > 0) {
        printf("Enter room succeed");
    } else {
        printf("Enter room failed");
    }
}