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NSArray *sourceText = @[@"", @"", @""];
NSString *targetLanguage = @"en";
[[V2TIMManager sharedInstance] translateText:sourceText
                              sourceLanguage:nil
                              targetLanguage:targetLanguage
                                  completion:^(int code, NSString *desc, NSDictionary<NSString *,NSString *> *result) {
    if (code == 0) {
        // Texts translated successfully. `result`: @{@"": @"Good morning", @"": @"Good afternoon", @"": @"Good evening"}
    } else {
        // Text translation failed
    }
}];

template <class T>
class ValueCallback final : public V2TIMValueCallback<T> {
public:
    using SuccessCallback = std::function<void(const T&)>;
    using ErrorCallback = std::function<void(int, const V2TIMString&)>;

    ValueCallback() = default;
    ~ValueCallback() override = default;

    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
        success_callback_ = std::move(success_callback);
        error_callback_ = std::move(error_callback);
    }

    void OnSuccess(const T& value) override {
        if (success_callback_) {
            success_callback_(value);
        }
    }
    void OnError(int error_code, const V2TIMString& error_message) override {
        if (error_callback_) {
            error_callback_(error_code, error_message);
        }
    }

private:
    SuccessCallback success_callback_;
    ErrorCallback error_callback_;
};

V2TIMStringVector textList;
textList.PushBack(u8"");
textList.PushBack(u8"");
textList.PushBack(u8"");
V2TIMString targetLanguage = u8"en";

auto callback = new ValueCallback<V2TIMStringToV2TIMStringMap>{};
callback->SetCallback(
    [=](const V2TIMStringToV2TIMStringMap& result) {
        // Texts translated successfully. `result`: {{"", "Good morning"}, {"", "Good afternoon"}, {"", "Good evening"}}
        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // Text translation failed
        delete callback;
    });

V2TIMManager::GetInstance()->GetMessageManager()->TranslateText(textList, "", targetLanguage, callback);