// Create an SDK instance in singleton mode and set an event listener// Create trtc instance(singleton) and set up event listenersmCloud = TRTCCloud.sharedInstance(getApplicationContext());mCloud.setListener(this);
// Create an SDK instance in singleton mode and set an event listener// Create trtc instance(singleton) and set up event listeners_trtcCloud = [TRTCCloud sharedInstance];_trtcCloud.delegate = self;
// Create an SDK instance in singleton mode and set an event listener// Create trtc instance (singleton) and set up event listenerstrtc_cloud_ = getTRTCShareInstance();trtc_cloud_->addCallback(this);
setListener
API to set callbacks and listen for errors, warnings, traffic statistics, and network quality information as well as various audio/video events during SDK operations.You can make your business class inherit **TRTCCloudListener**, reload the `onError` function, and use the **setListener** API to pass in the `this` pointer to the SDK, so as to listen for callback events from the SDK in the current class.```java// Listen for SDK events, and print logs for error messages such as "Current application is not authorized to use the camera"// Listen to the "onError" event, and print logs for errors such as "Camera is not authorized"mCloud = TRTCCloud.sharedInstance(getApplicationContext());mCloud.setListener(this);@Overridepublic void onError(int errCode, String errMsg, Bundle extraInfo) {if (errCode == TXLiteAVCode.ERR_CAMERA_NOT_AUTHORIZED) {Log.d(TAG, "Current application is not authorized to use the camera");}}```
You can make your business class inherit **TRTCCloudDelegate**, reload the `onError` function, and use the **delegate** attribute of `TRTCCloud` to pass in the `this` pointer to the SDK, so as to listen for callback events from the SDK in the current class.```ObjectiveC// Listen for SDK events, and print logs for error messages such as "Current application is not authorized to use the camera"// Listen to the "onError" event, and print logs for errors such as "Camera is not authorized"_trtcCloud = [TRTCCloud sharedInstance];_trtcCloud.delegate = self;- (void)onError:(TXLiteAVError)errCodeerrMsg:(nullable NSString *)errMsgextInfo:(nullable NSDictionary *)extInfo{if (ERR_CAMERA_NOT_AUTHORIZED == errCode) {NSString *errorInfo = @"Current application is not authorized to use the camera:";errorInfo = [errorInfo stringByAppendingString errMsg];[self toastTip:errorInfo];}}```
You can make your business class inherit **ITRTCCloudCallback**, reload the `onError` function, and use the **addCallback** API to pass in the `this` pointer to the SDK, so as to listen for callback events from the SDK in the current class.```C++// Listen for SDK events, and print logs for error messages such as "Current application is not authorized to use the camera"// Listen to the "onError" event, and print logs for errors such as "Camera is not authorized"trtc_cloud_ = getTRTCShareInstance();trtc_cloud_->addCallback(this);// Reload the `onError` functionvoid onError(TXLiteAVError errCode, const char* errMsg, void* extraInfo) {if (errCode == ERR_CAMERA_NOT_AUTHORIZED) {printf("Current application is not authorized to use the camera");}}```
TRTCParams
enterRoom
API, you need to enter two key parameters: TRTCParams
and TRTCAppScene
.TRTCAppSceneVideoCall
(video call) and TRTCAppSceneAudioCall
(audio call). This mode is suitable for one-to-one audio/video calls or online meetings for up to 300 attendees.TRTCAppSceneLIVE
(video live streaming) and TRTCAppSceneVoiceChatRoom
(audio live streaming). This mode is suitable for live streaming to up to 100,000 users. However, it requires you to specify the role field in the TRTCParams
parameter for users in the room: anchor or audience.TRTCParams
consists of many fields; however, you usually only need to pay attention to how to set the following fields:Parameter | Description | Remarks | Data Type | Sample Value |
SDKAppID | Application ID | You can view the SDKAppID in the TRTC console. If it doesn't exist, click Create Application to create an application. | Numeric | 1400000123 |
userId | User ID | Username. It can contain only letters, digits, underscores, and hyphens. In TRTC, a user cannot use the same userId to enter the same room on two different devices at the same time. | String | denny or 123321 |
userSig | Room entry signature | String | eJyrVareCeYrSy1SslI... | |
roomId | Room ID | Room ID of the numeric type. To use a string-type room ID, use only the strRoomId field instead of the roomId field, as they cannot be used together. | Number | 29834 |
strRoomId | Room ID | Room ID of the string type. Do not use strRoomId and roomId at the same time. "123" and 123 are considered different rooms by the TRTC backend. | String | "29834" |
role | Role | There are two roles: anchor and audience. This field is required only when TRTCAppScene is set to the TRTCAppSceneLIVE or TRTCAppSceneVoiceChatRoom live streaming scenarios. | Enumeration | TRTCRoleAnchor or TRTCRoleAudience |
userId
to enter the same room on two different devices at the same time; otherwise, there will be a conflict.appScene
must be the same on each client. Inconsistent appScene
may cause unexpected problems.enterRoom
)TRTCAppScene
and TRTCParams
described in step 4, you can call the enterRoom
API to enter the room.mCloud = TRTCCloud.sharedInstance(getApplicationContext());mCloud.setListener(mTRTCCloudListener);// Assemble TRTC room entry parameters. Replace the field values in `TRTCParams` with your own parameter values// Replace each field in TRTCParams with your own parametersTRTCCloudDef.TRTCParams param = new TRTCCloudDef.TRTCParams();params.sdkAppId = 1400000123; // Replace with your own SDKAppIDparams.userId = "denny"; // Replace with your own user IDparams.roomId = 123321; // Replace with your own room numberparams.userSig = "xxx"; // Replace with your own userSigparams.role = TRTCCloudDef.TRTCRoleAnchor;// If your scenario is live streaming, set the application scenario to `TRTC_APP_SCENE_LIVE`// If your application scenario is a group video call, use "TRTC_APP_SCENE_LIVE"mCloud.enterRoom(param, TRTCCloudDef.TRTC_APP_SCENE_LIVE);
self.trtcCloud = [TRTCCloud sharedInstance];self.trtcCloud.delegate = self;// Assemble TRTC room entry parameters. Replace the field values in `TRTCParams` with your own parameter values// Replace each field in TRTCParams with your own parametersTRTCParams *params = [[TRTCParams alloc] init];params.sdkAppId = 1400000123; // Replace with your own SDKAppIDparams.roomId = 123321; // Replace with your own room numberparams.userId = @"denny"; // Replace with your own useridparams.userSig = @"xxx"; // Replace with your own userSigparams.role = TRTCRoleAnchor;// If your scenario is live streaming, set the application scenario to `TRTC_APP_SCENE_LIVE`// If your application scenario is a group video call, use "TRTC_APP_SCENE_LIVE"[self.trtcCloud enterRoom:params appScene:TRTCAppSceneLIVE];
trtc_cloud_ = getTRTCShareInstance();trtc_cloud_->addCallback(this);// Assemble TRTC room entry parameters. Replace the field values in `TRTCParams` with your own parameter values// Replace each field in TRTCParams with your own parametersliteav::TRTCParams params;params.sdkAppId = 1400000123; // Replace with your own SDKAppIDparams.userId = "denny"; // Replace with your own user IDparams.roomId = 123321; // Replace with your own room numberparams.userSig = "xxx"; // Replace with your own userSigparams.role = liteav::TRTCRoleAnchor;// If your scenario is live streaming, set the application scenario to `TRTC_APP_SCENE_LIVE`// If your application scenario is a group video call, use "TRTC_APP_SCENE_LIVE"trtc_cloud_->enterRoom(params, liteav::TRTCAppSceneLIVE);
onEnterRoom(result)
event. Here, result
is a value greater than 0, indicating the time in milliseconds taken to enter the room.
If room entry fails, the SDK will also call back the onEnterRoom(result)
event, but the value of result
will be a negative number, indicating the error code for the room entry failure.// Listen for the `onEnterRoom` event of the SDK to get the room entry result// Listen for the `onEnterRoom` event of the SDK and learn whether the room is successfully entered@Overridepublic void onEnterRoom(long result) {if (result > 0) {Log.d(TAG, "Enter room succeed");} else {Log.d(TAG, "Enter room failed");}}
// Listen for the `onEnterRoom` event of the SDK to get the room entry result// Listen for 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!"];}}
// Listen for the `onEnterRoom` event of the SDK to get the room entry result// override to the onEnterRoom event of the SDK and learn whether the room is successfully enteredvoid onEnterRoom(int result) {if (result > 0) {printf("Enter room succeed");} else {printf("Enter room failed");}}
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