cordova媒体插件停止在Android 6上运行

Question

I have an application on Google Play that streams music from a radio station built with the latest cordova (5.4) and I am using some of the basic plugins such as:

• device plugin
• crosswalk webview plugin
• dialogs plugin
• ...
• files plugin
• media plugin

On Android 5.0+ the streaming works fine but recently when I upgraded my nexus on android 6.0 the streaming stopped. I updated media and file plugin to the latest versions (2.0.0 and 4.0.0 respectively), as cordova stated in their blog that these versions support the new permission checking on Android 6 but still the streaming is not working. The log gives me this:

11-24 23:53:35.347 15184-15184/com.uni.app E/chromium: [ERROR:xwalk_autofill_client.cc(170)] Not implemented reached in virtual void xwalk::XWalkAutofillClient::OnFirstUserGestureObserved()
11-24 23:53:40.395 15184-15235/com.uni.app D/MediaPlayer: setSubtitleAnchor in MediaPlayer
11-24 23:53:40.410 15184-15235/com.uni.app W/MediaPlayer: Stream has no duration and is therefore not seekable.
11-24 23:53:40.410 15184-15235/com.uni.app E/MediaPlayer: error (-2147483648, 0)
11-24 23:53:40.410 15184-15235/com.uni.app D/AudioPlayer: Send a onStatus update for the new seek
11-24 23:53:40.410 15184-15235/com.uni.app W/CordovaPlugin: Attempted to send a second callback for ID: Media951412725 Result was: {"action":"status","status":{"id":"d5334ff7-5511-ea09-b2ef-2900789941a9","msgType":3,"value":0}}
11-24 23:53:40.411 15184-15235/com.uni.app E/MediaPlayer: start called in state 0
11-24 23:53:40.411 15184-15235/com.uni.app E/MediaPlayer: error (-38, 0)
11-24 23:53:40.412 15184-15235/com.uni.app W/CordovaPlugin: Attempted to send a second callback for ID: Media951412725 Result was: {"action":"status","status":{"id":"d5334ff7-5511-ea09-b2ef-2900789941a9","msgType":1,"value":2}}
11-24 23:53:40.412 15184-15235/com.uni.app E/MediaPlayer: Attempt to call getDuration without a valid mediaplayer
11-24 23:53:40.412 15184-15235/com.uni.app E/MediaPlayer: error (-38, 0)
11-24 23:53:40.412 15184-15235/com.uni.app W/CordovaPlugin: Attempted to send a second callback for ID: Media951412725 Result was: {"action":"status","status":{"id":"d5334ff7-5511-ea09-b2ef-2900789941a9","msgType":2,"value":314586.9375}}
11-24 23:53:40.413 15184-15235/com.uni.app E/MediaPlayer: Error (-2147483648,0)
11-24 23:53:40.413 15184-15235/com.uni.app D/AudioPlayer: on completion is calling stopped
11-24 23:53:40.414 15184-15235/com.uni.app W/CordovaPlugin: Attempted to send a second callback for ID: Media951412725 Result was: {"action":"status","status":{"id":"d5334ff7-5511-ea09-b2ef-2900789941a9","msgType":1,"value":4}}
11-24 23:53:40.414 15184-15235/com.uni.app E/MediaPlayer: Error (-38,0)
11-24 23:53:40.414 15184-15235/com.uni.app D/AudioPlayer: on completion is calling stopped
11-24 23:53:40.414 15184-15235/com.uni.app E/MediaPlayer: Error (-38,0)
11-24 23:53:40.414 15184-15235/com.uni.app D/AudioPlayer: on completion is calling stopped
11-24 23:53:53.476 15184-15184/com.uni.app E/chromium: [ERROR:xwalk_autofill_client.cc(170)] Not implemented reached in virtual void xwalk::XWalkAutofillClient::OnFirstUserGestureObserved()
11-24 23:53:58.409 15184-15232/com.uni.app E/Surface: getSlotFromBufferLocked: unknown buffer: 0xaed05f70
11-24 23:53:58.419 15184-15184/com.uni.app W/ScreenOrientationListener: Removing an inexistent observer!
11-24 23:53:58.419 15184-15184/com.uni.app E/chromium: [ERROR:runtime_javascript_dialog_manager.cc(69)] Not implemented reached in virtual void xwalk::RuntimeJavaScriptDialogManager::ResetDialogState(content::WebContents*)
11-24 23:53:58.453 15184-15184/com.uni.app D/AudioPlayer: renaming /storage/emulated/0/tmprecording.3gp to /storage/emulated/0/http://IPADDRESS:PORT/;
11-24 23:53:58.454 15184-15184/com.uni.app E/AudioPlayer: FAILED renaming /storage/emulated/0/tmprecording.3gp to /storage/emulated/0/http://IPADDRESS:PORT/;
11-24 23:53:58.465 15184-15197/com.uni.app E/Surface: getSlotFromBufferLocked: unknown buffer: 0xb3978f90

IPADDRESS:PORT is a real http://ipaddress:port URL stream which works fine.

I now it has to do with the permissions but still no luck on finding exactly what. Going on app-info and on new permissions menu I see that the app uses Microphone, Phone and Storage permissions which are all enabled. I searched a lot and couldn't be able to find something similar.

Any help is appreciated

Answer 1

I found the problem, just comment this line on AudioPlayer.java

public void onPrepared(MediaPlayer player) {
    // Listen for playback completion
    this.player.setOnCompletionListener(this);
    // seek to any location received while not prepared
    //this.seekToPlaying(this.seekOnPrepared);
    // If start playing after prepared
    if (!this.prepareOnly) {
        this.player.start();
        this.setState(STATE.MEDIA_RUNNING);
        this.seekOnPrepared = 0; //reset only when played
    } else {
        this.setState(STATE.MEDIA_STARTING);
    }
    // Save off duration
    this.duration = getDurationInSeconds();
    // reset prepare only flag
    this.prepareOnly = true;

    // Send status notification to JavaScript
    sendStatusChange(MEDIA_DURATION, null, this.duration);
}

Answer 2

Checked on Github in the official repo and found this

Tried on a new sample app and worked fine on my Android 6.0 device. The solution is close to what luckakashi suggested with some extra commenting.

Answer 3

Seems something wrong from Crosswalk, have you try if you remove the Crosswalk plugin? And is your Android 6.0 device 64-bit?