tencent cloud


Audio Call (Android)

Last updated: 2022-03-17 15:41:03

    Demo UI

    You can download and install the app we provide to try out the real-time audio/video call feature.

    Call Answer

    To make it easier for you to implement the real-time audio/video call feature, we have refactored the TUICalling component. You no longer need to pay attention to UI as it is now implemented within the TUICalling component.

    Running the Demo

    Step 1. Create an application

    1. Log in to the TRTC console and select Development Assistance > Demo Quick Run.
    2. Enter an application name such as TestVideoCall and click Create.
    3. Click Next.


    This feature uses two basic PaaS services of Tencent Cloud, namely TRTC and IM. When you activate TRTC, IM will be activated automatically. IM is a value-added service. See Value-added Service Pricing for its billing details.

    Step 2. Download the application source code

    Clone or download the TUICalling source code.

    Step 3. Configure application project files

    1. In the Modify Configuration step, select your platform.

    2. Find and open Android/Debug/src/main/java/com/tencent/liteav/debug/GenerateTestUserSig.java.

    3. Set parameters in GenerateTestUserSig.java:

      • 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 disclosed, attackers can steal your Tencent Cloud traffic. Therefore, this method is suitable only for the local execution and debugging of the app.
    • 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, see How do I calculate UserSig on the server?.

    Step 4. Run the application

    Open the source code project TUICalling with Android Studio (version 3.5 or above) and click Run.



    You need at least two devices to try out the application.

    User A

    1. Enter a username (which must be unique) and log in.

    2. Enter the userId of the person you want to call and tap Search.

    3. Tap Call and select Video Call (Make sure that the callee is active in the application, or the call may fail).

    User B

    1. Enter a username (which must be unique) and log in.

    2. Go to the homepage and wait for the incoming call.

    Integration Directions

    In the source code, the Source folder contains two subfolders: ui and model. The model subfolder includes the open-source TUICallingManager component, which we share with the public. You can find the component’s APIs in the TUICalling.java file.

    You can enable the real-time audio/video call feature for your project with ease using the open-source TUICalling and TUICallingManager components, with no need to implement complicated call UI or logic by yourself.

    Step 1. Integrate the SDKs

    The audio/video call component TUICalling depends on the TRTC SDK and IM SDK. Follow the steps below to integrate the two SDKs into your project:

    Method 1: adding dependencies via mavenCentral

    1. Add the TRTC SDK and IM SDK dependencies to dependencies.

      dependencies {
      compile "com.tencent.liteav:LiteAVSDK_TRTC:latest.release"
      compile 'com.tencent.imsdk:imsdk:latest.release'

      // As we use Gson for parsing, you also need to add the Google Gson dependency.
      compile 'com.google.code.gson:gson:latest.release'
    2. In defaultConfig, specify the CPU architecture to be used by your application.

      defaultConfig {
      ndk {
      abiFilters "armeabi-v7a"
    3. Click Sync Now to sync the SDKs.


      If you have no problem connecting to mavenCentral, the SDKs will be downloaded and integrated into your project automatically.

    Method 2: adding dependencies through local AAR files

    If your access to the mavenCentral repository is slow, you can download the ZIP files of the SDKs and manually integrate them into your project as instructed in the documents below.

    SDK Download Page Integration Guide
    TRTC SDK Download Integration document
    IM SDK Download Integration documentation

    Step 2. Configure permission requests and obfuscation rules

    Configure permission requests for your application in AndroidManifest.xml. The SDKs need the following permissions (on Android 6.0 and above, the camera and read storage permissions must be requested at runtime.)

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-feature android:name="android.hardware.camera"/>
    <uses-feature android:name="android.hardware.camera.autofocus" />

    In the proguard-rules.pro file, add the SDK classes to the "do not obfuscate" list.

    -keep class com.tencent.** { *;}

    Step 3. Import the TUICalling component

    Copy the Source directory to your project and import it in setting.gradle as shown below:

    include ':Source'

    Step 4. Initialize the component and log in

    1. Call TUICallingManager.sharedInstance() to initialize the component.
    2. Call TUILogin.init(context, SDKAppID, config, listener) to initialize login.
    3. Call TUILogin.login(userId, userSig, callback) to log in to the component. Specify the key parameters as described below:
      SDKAppID You can view `SDKAppID` in the TRTC console.
      userId ID of the current user, which is a string that can contain letters (a-z and A-Z), digits (0-9), hyphens (-), and underscores (_). We recommend you set it based on your business account system.
      userSig Tencent Cloud's proprietary security signature. For the calculation method, please see UserSig.
      config SDK configuration, which is used to set the log output level and log callback. You can pass `null` for this parameter. For details, see the sample code below.
      listener IM listener, which is used to listen for some crucial callbacks, such as forced logout and `userSig` expiration. For details, see the sample code below.
      callback Callback for login, which indicates whether login is successful. For details, see the sample code below.
      // Initialize the component
      TUICallingManager manager = TUICallingManager.sharedInstance();
      // Log in to the component
      V2TIMSDKConfig config = new V2TIMSDKConfig();
      config.setLogListener(new V2TIMLogListener() {
      public void onLog(int logLevel, String logContent) {

      TUILogin.init(this, ${Your `SDKAPPID`}, config, new V2TIMSDKListener() {
      public void onKickedOffline() { // Callback for forced logout
      mIsKickedOffline = true;
      public void onUserSigExpired() { // Callback for `userSig` expiration
      mIsUserSigExpired = true;
      TUILogin.login("${Your `userId`}", "${Your `userSig`}", new V2TIMCallback() {
      public void onError(int code, String msg) {
      Log.d(TAG, "code: " + code + " msg:" + msg);
      public void onSuccess() {
      Log.d(TAG, "onSuccess");

    Step 5. Make an audio/video call

    1. Caller: Call call(); of TUICallingManager to initiate a call, passing in the user IDs (userids) and call type (type). For the call type, you can pass in TUICalling.Type.AUDIO (audio call) or TUICalling.Type.VIDEO (video call). If only one user ID is passed in for userids, the call is a one-to-one call; if two or more user IDs are passed in, the call is a group call.
    2. Callee: If a callee is logged in, the answering view will be displayed. If you want offline users to receive call invitations, please see Enable offline call answering.
    // 1. Initialize the component
    TUICallingManager manager = TUICallingManager.sharedInstance();
    // 2. Register the listener
    manager.setCallingListener(new TUICalling.TUICallingListener() {
    public boolean shouldShowOnCallView() {
    return true;

    public void onCallStart(String[] userIDs, TUICalling.Type type, TUICalling.Role role, final View tuiCallingView) {
    if (!shouldShowOnCallView() || null
    == tuiCallingView) {
    runOnUiThread(new Runnable()
    public void run() {
    FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT);
    mCallingView = tuiCallingView;
    addContentView(tuiCallingView, params)

    public void onCallEnd(String[] userIDs, TUICalling.Type type, TUICalling.Role role, long totalTime) {

    public void onCallEvent(TUICalling.Event event, TUICalling.Type type, TUICalling.Role role, String message) {
    if (TUICalling.Event.CALL_FAILED == event)
    // 3. Make a call
    manager.call(userIDs, TUICalling.Type.VIDEO);

    Step 6. Enable offline call answering


    If your project does not require the offline answering feature, for example, if it offers online customer service, your integration can end at step 5. If your project is a social networking service, we recommend you enable offline answering.

    The IM SDK supports offline push. However, since the offline push service of Android phones varies from vendor to vendor, the configuration required to enable offline push for Android is more complicated than that for iOS.

    1. Apply for a certificate required by the vendor's push channel, configure it in the IM console, and add the certificate and ID as required. For detailed directions, please see IM > Offline Push (Android).
    2. The offline push API has been integrated into the signaling API (sendModel) of TRTCCallingImpl. After completing the offline push configuration for your application, you will be able to send notifications to offline users.

    Component APIs

    The table below lists the APIs of the TUICalling component.

    API Description
    call Sends call invitations by user ID.
    receiveAPNSCalled Answers a call.
    setCallingListener Sets the listener.
    setCallingBell Sets the ringtone (preferably shorter than 30s).
    enableMuteMode Enables/Disables the mute mode.
    enableCustomViewRoute Enables/Disables custom views. After enabling custom views, you will receive a CallingView instance in the callback for calling/being called, and can decide how to display the view by yourself. The view must be displayed full screen or in proportion to the screen size; otherwise, an error may occur.
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