使用mediaSession时报错
Fatal Exception: java.lang.NullPointerException: Attempt to invoke
virtual method ‘java.lang.Object java.lang.ref.Reference.get()’ on a
null object reference at
android.support.v4.media.session.MediaSessionCompat StubApi21.onCommand(MediaSessionCompat.java:955)
at
android.support.v4.media.session.MediaSessionCompatApi21 CallbackMessageHandler.handleMessage(MediaSession.java:1352)
at android.os.Handler.dispatchMessage(Handler.java:105) at
android.os.Looper.loop(Looper.java:251) at
android.app.ActivityThread.main(ActivityThread.java:6572) at
java.lang.reflect.Method.invoke(Method.java) at
com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
以下是解决方案
The problem was solved by updating to the latest support library
version.The answer was found somewhere deep in the bug-tracking forums of
Google.If someone will struggle with the same problem - try to update your
support library version at least to the 27+ version.