android - cordova 媒体插件在 Android 6 上停止工作

Question

我在 Google Play 上有一个应用程序可以从使用最新的 cordova (5.4) 构建的广播电台流式传输音乐，我正在使用一些基本插件，例如:

• 设备插件
• 人行横道 WebView 插件
• 对话插件
• ...
• 文件插件
• 媒体插件

在 Android 5.0+ 上，流媒体工作正常，但最近当我在 Android 6.0 上升级我的 nexus 时，流媒体停止了。我将媒体和文件插件更新到最新版本(分别为 2.0.0 和 4.0.0)，正如 cordova 在其博客中所述，这些版本支持 Android 6 上的新权限检查，但流媒体仍然无法正常工作。日志给了我这个:

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 是真实的http://ipaddress:port工作正常的 URL 流。

我现在它与权限有关，但仍然找不到确切的内容。继续应用程序信息和新权限菜单，我看到该应用程序使用麦克风、电话和存储权限，这些权限均已启用。我搜索了很多，但找不到类似的东西。

感谢任何帮助

Answer 1

我发现了问题，只需在 AudioPlayer.java 上注释这一行

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);
}