Last updated: 2021-11-01 11:26:57

    This document describes how to quickly run the TRTC demo for Flutter.


    Currently, the demo for Windows/macOS only supports audio but not video APIs. It supports video calls on Android/iOS.

    Environment Requirements

    • Flutter 2.0 or above
    • Developing for Android:
      • Android Studio 3.5 or above
      • Devices with Android 4.1 or above
    • Developing for iOS and macOS:
      • Xcode 11.0 or above
      • OS X 10.11 or above
      • A valid developer signature for your project
    • Developing for Windows:
      • OS: Windows 7 SP1 or above (64-bit based on x86-64)
      • Disk space: at least 1.64 GB of space after the IDE and relevant tools are installed
      • Install Visual Studio 2019


    You have signed up for a Tencent Cloud account and completed identity verification.


    Step 1. Create an application

    1. Log in to the TRTC console and select Development Assistance > Demo Quick Run.
    2. Click Create Application and enter the application name such as TestTRTC. If you have already created an application, click Select Existing Application.
    3. Add or edit tags according to your actual business needs and click Create.

      • An application name can contain up to 15 characters. Only digits, letters, Chinese characters, and underscores are allowed.
      • Tags are used to identify and organize your Tencent Cloud resources. For example, an enterprise may have multiple business units, each of which has one or more TRTC applications. In this case, the enterprise can tag TRTC applications to mark out the unit information. Tags are optional and can be added or edited according to your actual business needs.

    Step 2. Download the SDK and demo source code

    1. Download the SDK and demo source code for your platform.
    2. Click Next.

    Step 3. Configure demo project files

    1. In the Modify Configuration step, select the development platform in line with the source package downloaded.

    2. Find and open /example/lib/debug/GenerateTestUserSig.dart.

    3. Set parameters in GenerateTestUserSig.dart as follows.

      • SDKAPPID: a placeholder by default. Set it to the actual `SDKAppID`.
      • `SECRETKEY`: a placeholder by default. Set it to the actual key.
    4. Click Next to complete the creation.

    5. After compilation, click Return to Overview Page.


    • The method for generating UserSig described in this document involves configuring SECRETKEY in client code. In this method, SECRETKEY may be easily decompiled and reversed, and if your key is leaked, attackers can steal your Tencent Cloud traffic. Therefore, this method is only suitable for the local execution and debugging of the demo.
    • The correct UserSig distribution method is to integrate the calculation code of UserSig into your server and provide an application-oriented API. When UserSig is needed, your application can send a request to the business server for a dynamic UserSig. For more information, please see How do I calculate UserSig on the server?.

    Step 4. Compile and run

    1. Run flutter pub get.
    2. Compile, run, and debug the project.
      1. Run flutter run.
      2. Open the demo project with Android Studio (3.5 or above), and click Run.


    How do I view TRTC logs?

    TRTC logs are compressed and encrypted by default with the .xlog extension at the following address:

    • iOS: Documents/log in the sandbox.
    • Android:
      • 6.7 or below: /sdcard/log/tencent/liteav.
      • 6.8 or above: /sdcard/Android/data/package name/files/log/tencent/liteav/.

    What should I do if videos do not show on iOS but do on Android?

    Please check whether io.flutter.embedded_views_preview is YES in your info.plist.

    What should I do if Android Studio fails to build my project with the error "Manifest merge failed"?

    Open /example/android/app/src/main/AndroidManifest.xml.
    1. Add xmlns:tools="" to manifest.
    2. Add tools:replace="android:label" to application.


    For more FAQs, please see Flutter.