NullPointerException

[lingling-fan]

//package name: com.smithdtyler.prettygoodmusicplayer
//version: 3.3.2
//target sdk version: android-18
java.lang.RuntimeException: Unable to start service com.smithdtyler.prettygoodmusicplayer.MusicPlaybackService@ad265e48 with Intent { cmp=com.smithdtyler.prettygoodmusicplayer/.MusicPlaybackService (has extras) }: java.lang.NullPointerException
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2721)
at android.app.ActivityThread.access$1900(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.smithdtyler.prettygoodmusicplayer.MusicPlaybackService.previous(MusicPlaybackService.java:536)
at com.smithdtyler.prettygoodmusicplayer.MusicPlaybackService.onStartCommand(MusicPlaybackService.java:290)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2704)