有人可以帮助我与Android RemoteControlClient？

我试图让 RemoteControlClient 设置，使我的应用程序的音乐可以通过弹出的锁屏上（如SoundCloud的部件进行控制，谷歌播放音乐和其他音乐/视频应用程序的工作）。我不知道这有什么错我的code，为什么它没有被正确挂钩，但这里是我迄今为止...

I'm trying to get the RemoteControlClient set up so my app's music can be controlled by the widget that pops up on the lock screen (like SoundCloud, Google Play Music, and other music/video apps work). I'm not sure what's wrong with my code and why it isn't correctly hooking, but here's what I have so far...

一类称为MusicService，试图处理更新到RemoteControlClient

A class called MusicService that tries to handle the updates to the RemoteControlClient

public class MusicService extends Service
{
public static final String ACTION_PLAY = "com.stfi.music.action.PLAY";
private RemoteController controller = null;

@Override
public void onCreate()
{
    super.onCreate();

    System.out.println("Creating the service.");

    if(controller == null)
    {
        controller = new RemoteController();
    }
}

@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
    String action = intent.getAction();
    System.out.println("Got an action of " + action);

           /* Logic to get my Song cur */
    controller.register(this);
    controller.updateMetaData(cur);

    return START_STICKY;
}

@Override
public void onDestroy()
{
    super.onDestroy();
    System.out.println("Destorying MusicService");
}

@Override
public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub
    return null;
}
}

这使用了类我称之为 RemoteController 里面有我的 RemoteControlClient 。

This uses a class I have called RemoteController which houses my RemoteControlClient.

public class RemoteController { 
private RemoteControlClient remoteControlClient;
private Bitmap dummyAlbumArt;


public void register(Context context)
{
    if (remoteControlClient == null)
    {
        System.out.println("Trying to register it.");

        dummyAlbumArt = BitmapFactory.decodeResource(context.getResources(), R.drawable.dummy_album_art);

        AudioManager audioManager = (AudioManager) context.getSystemService(context.AUDIO_SERVICE);

        ComponentName myEventReceiver = new ComponentName(context.getPackageName(), MediaButtonReceiver.class.getName());
        audioManager.registerMediaButtonEventReceiver(myEventReceiver);

        // build the PendingIntent for the remote control client 
        Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
        mediaButtonIntent.setComponent(myEventReceiver);
        // create and register the remote control client 
        PendingIntent mediaPendingIntent = PendingIntent.getBroadcast(context, 0, mediaButtonIntent, 0);
        remoteControlClient = new RemoteControlClient(mediaPendingIntent);
        remoteControlClient.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE
                | RemoteControlClient.FLAG_KEY_MEDIA_NEXT
                | RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS
                | RemoteControlClient.FLAG_KEY_MEDIA_PLAY
                | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
                );
        audioManager.registerRemoteControlClient(remoteControlClient);


    }
} 

/** 
 * Update the state of the remote control. 
 */ 
public void updateState(boolean isPlaying)
{
    if(remoteControlClient != null)
    {
        if (isPlaying)
        {
            remoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);
        }

        else
        { 
            remoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PAUSED);
        } 
    } 
} 

/** 
 * Updates the state of the remote control to "stopped". 
 */ 
public void stop()
{ 
    if (remoteControlClient != null)
    {
        remoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_STOPPED);
    } 
} 

public void updateMetaData(Song song)
{
    if (remoteControlClient != null && song != null)
    {
        System.out.println("Updating metadata");
        MetadataEditor editor = remoteControlClient.editMetadata(true);
        editor.putBitmap(MetadataEditor.BITMAP_KEY_ARTWORK, dummyAlbumArt);
        editor.putLong(MediaMetadataRetriever.METADATA_KEY_DURATION, (long)1000);
        editor.putString(MediaMetadataRetriever.METADATA_KEY_ARTIST, "Artist");
        editor.putString(MediaMetadataRetriever.METADATA_KEY_TITLE, "Title");
        editor.apply();

        updateState(true);
    }
}

/** 
 * Release the remote control. 
 */ 
public void release() { 
    remoteControlClient = null;
} 
} 

我每次要更新的部件，我称之为 startService（新意图（MusicService.ACTION_PLAY））; 。它看起来像它正确地创建服务，并始终得到的地步，它说：更新元数据，但对于一些当我锁我的屏幕，解锁的原因，我没有看到我的锁屏幕上的任何部件。

Every time I want to update the widget, I call startService(new Intent(MusicService.ACTION_PLAY));. It looks like it correctly creates the service, and it always gets to the point where it says "Updating metadata", but for some reason when I lock my screen and unlock it, I don't see any widget on my lock screen.

下面是我表现的重要组成部分，以及，看到这可能在某种程度上导致了问题...

Below is the important parts of my manifest as well, seeing as that could somehow cause the issue...

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.stfi"
android:versionCode="1"
android:versionName="1.0" >

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />

<uses-sdk
    android:minSdkVersion="14"
    android:targetSdkVersion="17" />

<application
    android:hardwareAccelerated="true"
    android:allowBackup="true"
    android:icon="@drawable/stfi"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:theme="@style/MyActionBarTheme" >
    <meta-data
        android:name="android.app.default_searchable"
        android:value=".activities.SearchActivity" />

    <activity
        android:name=".StartingToFeelIt"
        android:configChanges="orientation|keyboardHidden"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable" />
    </activity>
    ...other activities listed

    <service
        android:name=".helpers.MyNotificationService"
        android:enabled="true"
        android:label="MyNotificationServiceLabel" >
    </service>
    <service
        android:name=".music.MusicService"
        android:exported="false" >
        <intent-filter>

            <action android:name="com.stfi.music.action.PLAY" />

        </intent-filter>
        <intent-filter>
            <action android:name="com.example.android.musicplayer.action.URL" />

            <data android:scheme="http" />
        </intent-filter>
    </service>

    <receiver
        android:name=".music.MediaButtonReceiver"
        android:exported="false" >
    </receiver>
</application>

现在我MediaButtonReceiver并没有真正做很多的事情。我只是试图让钩成立。如果你想，这是我的MediaButtonReceiver类...

Right now my MediaButtonReceiver doesn't really do much of anything. I'm just trying to get the hooks set up. If you want, this is my MediaButtonReceiver class...

public class MediaButtonReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
    System.out.println("Receiving something.");
    if (intent.getAction().equals(Intent.ACTION_MEDIA_BUTTON))
    {
        final KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);

        if (event != null && event.getAction() == KeyEvent.ACTION_UP)
        {

            if (event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE)
            {
                System.out.println("You clicked pause.");
            }

            else if(event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_PLAY)
            {
                System.out.println("You clicked play.");
            }

            else if (event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_NEXT)
            {
                System.out.println("You clicked next.");
            }

            else if (event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_PREVIOUS)
            {
                System.out.println("You clicked previous.");
            }
        }
    }
}

}