// Initialize the `config` object
let config = V2TIMSDKConfig()
// Specify the log output level
config.logLevel = .V2TIM_LOG_INFO
// Set the log listener
config.logListener = { logLevel, logContent in
       // `logContent` is the SDK log content
    print("Log Level: \\(logLevel), Log Content: \\(logContent)")
}

// Initialize the `config` object
V2TIMSDKConfig *config = [[V2TIMSDKConfig alloc] init];
// Specify the log output level
config.logLevel = V2TIM_LOG_INFO;
// Set the log listener
config.logListener = ^(V2TIMLogLevel logLevel, NSString *logContent) {
    // `logContent` is the SDK log content
};

class LogListener final : public V2TIMLogListener {
public:
    LogListener() = default;
    ~LogListener() override = default;
    void OnLog(V2TIMLogLevel logLevel, const V2TIMString& logContent) override {
        // `logContent` is the SDK log content
    }
};
// Note that `logListener` should not be released before the SDK is uninitialized,
// otherwise the log callback cannot be called.
LogListener logListener;

// Initialize the `config` object
V2TIMSDKConfig config;
// Specify the log output level
config.logLevel = V2TIMLogLevel::V2TIM_LOG_INFO;
// Specify the log listener
config.logListener = &logListener;

// The `self` type is id<V2TIMSDKListener>.
V2TIMManager.shared.addIMSDKListener(listener: self)

// The `self` type is id<V2TIMSDKListener>.
[[V2TIMManager sharedInstance] addIMSDKListener:self];

// `sdkListener` is an instance of V2TIMSDKListener.
V2TIMManager::GetInstance()->AddSDKListener(&sdkListener);

// 1. Get the `SDKAppID` from the IM console.
// 2. Initialize the `config` object.
let config = V2TIMSDKConfig()
// 3. Specify the log output level.
config.logLevel = .V2TIM_LOG_INFO // Use enumeration values
// 4. Add the `V2TIMSDKListener` event listener. `self` is the implementation class of id<V2TIMSDKListener>. If you don't need to listen to SDK events, skip this step.
V2TIMManager.shared.addIMSDKListener(listener: self)
// 5. Initialize the SDK. You can call the login API as soon as you call this API.
V2TIMManager.shared.initSDK(sdkAppID: sdkAppID, config: config)

// 1. Get the `SDKAppID` from the IM console.
// 2. Initialize the `config` object.
V2TIMSDKConfig *config = [[V2TIMSDKConfig alloc] init];
// 3. Specify the log output level.
config.logLevel = V2TIM_LOG_INFO;
// 4. Add the `V2TIMSDKListener` event listener. `self` is the implementation class of id<V2TIMSDKListener>. If you don't need to listen to SDK events, skip this step.
[[V2TIMManager sharedInstance] addIMSDKListener:self];
// 5. Initialize the SDK. You can call the login API as soon as you call this API.
int  sdkAppID = 1400000000; // please set the sdkAppID of your own application
[[V2TIMManager sharedInstance] initSDK:sdkAppID config:config];

// 1. Get the `SDKAppID` from the IM console.
// 2. Initialize the `config` object.
V2TIMSDKConfig config;
// 3. Specify the log output level.
config.logLevel = V2TIMLogLevel::V2TIM_LOG_INFO;
// 4. Add the `V2TIMSDKListener` event listener. `sdkListener` is the implementation class of `V2TIMSDKListener`.
//    If you don't need to listen to SDK events, skip this step.
V2TIMManager::GetInstance()->AddSDKListener(&sdkListener);
// 5. Initialize the SDK. You can call the login API as soon as you call this API.
int  sdkAppID = 1400000000; // please set the sdkAppID of your own application
V2TIMManager::GetInstance()->InitSDK(sdkAppID, config);

// `self` is the implementation class of id<V2TIMSDKListener>.
V2TIMManager.shared.removeIMSDKListener(listener: self)
// Uninitialize the SDK
V2TIMManager.shared.unInitSDK()

// `self` is the implementation class of id<V2TIMSDKListener>.
[[V2TIMManager sharedInstance] removeIMSDKListener:self];
// Uninitialize the SDK
[[V2TIMManager sharedInstance] unInitSDK];

// Remove the `V2TIMSDKListener` event listener. `sdkListener` is the instance of V2TIMSDKListener.
V2TIMManager::GetInstance()->RemoveSDKListener(&sdkListener);
// Uninitialize the SDK
V2TIMManager::GetInstance()->UnInitSDK();