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DocumentationChatNo UI IntegrationMessageMessage TranslationAndroid&iOS&Windows&Mac
Android&iOS&Windows&Mac
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Last updated: 2025-03-27 10:43:02
Android&iOS&Windows&Mac
Last updated: 2025-03-27 10:43:02
Download PDF

Overview

The message translation feature currently supports the translation of text messages only, which can be triggered by manual API calls. Non-text messages such as image, video, file, audio, and custom messages cannot be translated.
Note:
The message translation feature is only available to customers of Pro Plus and Enterprise. It can be used after purchasing Pro Plus and Enterprise; the Free Trial version supports a certain limit of free trial, valid for one month.
This feature is available only in SDK enhanced edition v7.0 or later.

Effect

You can use the Message Translation feature to implement the translation effect shown in the diagram below:



Note:
You can also directly use the UI-inclusive Translation Plugin, TUITranslationPlugin, to quickly obtain translation capabilities.

Interface Description

Translating Text Messages

Call the translateText API (Java / Swift / Objective-C / C++) to translate texts.
API parameters are described as follows:
Input Parameter
Definition
Description
sourceTextList
List of text messages to be translated
1. Multiple text messages can be passed in at a time.
2. UTF-8 encoding is required; otherwise, translation will failed.
3. For non-pure texts such as those with HTML tags, the translation may fail.
4. The total texts to be translated per request can contain up to 2,000 characters (each Chinese character, letter, punctuation mark, or space is counted as a character).
sourceLanguage
Source language
Pass in a specific language or auto (automatically identify the source language). If no value is passed in, the default value auto will be used.
targetLanguage
Target language
Multiple target languages are supported. For more information, see Supported Text Translation Languages.
callback
Translation result callback
In the callback, key indicates the text to be translated, and value indicates the translated text.
Sample code:
Java
Swift
Objective-C
C++
List<String> textList = new ArrayList<>();
textList.add("");
textList.add("");
textList.add("");
String targetLanguage = "en";
V2TIMManager.getMessageManager().translateText(textList, null, targetLanguage, new V2TIMValueCallback<HashMap<String, String>>() {
    @Override
    public void onSuccess(HashMap<String, String> translateHashMap) {
        // Texts translated successfully. `translateHashMap`: {"": "Good morning", "": "Good afternoon", "": "Good evening"}
    }

    @Override
    public void onError(int code, String desc) {
        // Text translation failed
    }
});
V2TIMManager.shared.translateText(sourceTextList: ["Hello","Bye"], sourceLanguage: "zh", targetLanguage: "en") { code, desc, map in
    print("translateText result, code: \(code), desc: \(desc)")
    map.forEach { (key: String, value: String) in
        print( "\(key): \(value)")
    }
}
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);

Supported Text Translation Languages

Source Language
Supported Target Language
zh (Simplified Chinese)
en (English), ja (Japanese), ko (Korean), fr (French), es (Spanish), it (Italian), de (German), tr (Turkish), ru (Russian), pt (Portuguese), vi (Vietnamese), id (Bahasa Indonesian), th (Thai), and ms (Malay)
zh-TW (Traditional Chinese)
en (English), ja (Japanese), ko (Korean), fr (French), es (Spanish), it (Italian), de (German), tr (Turkish), ru (Russian), pt (Portuguese), vi (Vietnamese), id (Bahasa Indonesian), th (Thai), and ms (Malay)
en (English)
zh (Simplified Chinese), ja (Japanese), ko (Korean), fr (French), es (Spanish), it (Italian), de (German), tr (Turkish), ru (Russian), pt (Portuguese), vi (Vietnamese), id (Bahasa Indonesian), th (Thai), ms (Malay), ar (Arabic), and hi (Hindi)
ja (Japanese)
zh (Simplified Chinese), en (English), ko (Korean)
ko (Korean)
zh (Simplified Chinese), en (English), ja (Japanese)
fr (French)
zh (Simplified Chinese), en (English), es (Spanish), it (Italian), de (German), tr (Turkish), ru (Russian), and pt (Portuguese)
es (Spanish)
zh (Simplified Chinese), en (English), fr (French), it (Italian), de (German), tr (Turkish), ru (Russian), and pt (Portuguese)
it (Italian)
zh (Simplified Chinese), en (English), fr (French), es (Spanish), de (German), tr (Turkish), ru (Russian), and pt (Portuguese)
de (German)
zh (Simplified Chinese), en (English), fr (French), es (Spanish), it (Italian), tr (Turkish), ru (Russian), and pt (Portuguese)
tr (Turkish)
zh (Simplified Chinese), en (English), fr (French), es (Spanish), it (Italian), de (German), ru (Russian), and pt (Portuguese)
ru (Russian)
zh (Simplified Chinese), en (English), fr (French), es (Spanish), it (Italian), de (German), tr (Turkish), and pt (Portuguese)
pt (Portuguese)
zh (Simplified Chinese), en (English), fr (French), es (Spanish), it (Italian), de (German), tr (Turkish), and ru (Russian)
vi (Vietnamese)
zh (Simplified Chinese), en (English)
id (Bahasa Indonesian)
zh (Simplified Chinese), en (English)
th (Thai)
zh (Simplified Chinese), en (English)
ms (Malay)
zh (Simplified Chinese), en (English)
ar (Arabic)
en (English)
hi (Hindi)
en (English)

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