我已尝试根据Google'stalk实现媒体按钮控制我在list中设置接收者:在服务的onCreate()中创建MediaSessionCompat:mediaSession=newMediaSessionCompat(getApplicationContext(),"SOUNDPROCESS");mediaSession.setFlags(MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS|MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);PlaybackStateCompatps=newP