WebRTC 如何在 Android 上正确挂断通话

Question

我正在尝试创建一个基于webrtc-android-codelab的WebRTC应用程序。我有一个WebView，当我想要进行视频通话时，我会启动一个活动并建立视频通话，这是有效的，但我无法挂断视频通话并返回到先前的活动。如果我关闭或处理peerconnection，我会收到以下错误信息：“Native thread exiting without having called DetachCurrentThread (maybe it's going to use a pthread_key_create destructor?)”。如果我在hangup()中调用finish()离开活动，则应用程序会崩溃，并显示以下错误：“E/UncaughtException: java.lang.RuntimeException: Unable to destroy activity This object has been released”。这是我的挂断代码：

private void hangup() {
    if (peerConnectionFactory != null) {
        peerConnectionFactory.stopAecDump();
    }
    if(stream !=null) {
        while(stream.audioTracks.size() > 0) {
            AudioTrack audioTrack = stream.audioTracks.get(0);
            stream.removeTrack(audioTrack);
        }
        while(stream.videoTracks.size() > 0) {
            VideoTrack videoTrack = stream.videoTracks.get(0);
            stream.removeTrack(videoTrack);
        }
    }
    if (audioSource != null) {
        audioSource.dispose();
        audioSource = null;
    }
    if (videoCapturerAndroid != null) {
        try {
            videoCapturerAndroid.stopCapture();
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        videoCapturerAndroid.dispose();
        videoCapturerAndroid = null;
    }
    if (videoSource != null) {
        videoSource.dispose();
        videoSource = null;
    }
    if(localPeer!=null) {
        localPeer.close();
        localPeer = null;
    }
    SignallingClient.getInstance().isInitiator=false;
    SignallingClient.getInstance().isChannelReady=false;
    SignallingClient.getInstance().isStarted=false;
}

- Darm0ka

---

此代码注释 https://chromium.googlesource.com/external/webrtc/+/refs/heads/master/modules/utility/source/helpers_android.cc#95 暗示该问题可能出现在库内。我并不清楚您是否应该处理 AudioTrack 对象，或者只需让其自动结束。 - Rupert Rawnsley

Answer 1

现在它可以使用以下代码：

private void hangup() {
    try {
        localPeer.close();
        localPeer = null;
        updateVideoViews(false);
        SignallingClient.getInstance().isInitiator=false;
        SignallingClient.getInstance().isChannelReady=false;
        SignallingClient.getInstance().isStarted=false;
        finish();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

- Darm0ka