[Musicman/Canora] [v0.3] The app crashed when I tried to clear this app from notification panel after changing the song

Related Informations

• Repository: https://github.com/ZoidbergZero/Canora-MusicPlayer
• Project Name: Canora (new), MusicMan (old)
• My Submitted Issue: here
• Fixed Commit: 00a6309
• My GitHub Account: here

Expected behavior

The users should be able to clear/close the app from the notification panel without getting any trouble.

Actual behavior

When I tried to close the player from the notification panel after changing songs, then the app crashed.

How to reproduce

Here is every possible detail to reproduce the bug.
1. Open the app.
2. Play a song.
3. Minimize this app. (Make sure that song is running on background)
4. Swipe/pull down your phone's notification panel and change that running song.
5. Then clear the notification panel and notice the bug.

• App version: 0.3
• Operating system: Android 6.0.1

Recording Of The Bug

LogCat

05-21 13:48:28.086 30958 30958 E AndroidRuntime: FATAL EXCEPTION: main

05-21 13:48:28.086 30958 30958 E AndroidRuntime: Process: e.planet.musicman, PID: 30958

05-21 13:48:28.086 30958 30958 E AndroidRuntime: java.lang.IllegalStateException

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.media.MediaPlayer.isPlaying(Native Method)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at e.planet.musicman.MainActivity$1.onAnimationUpdate(MainActivity.java:309)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.animation.ValueAnimator.animateValue(ValueAnimator.java:1463)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.animation.ValueAnimator.animationFrame(ValueAnimator.java:1384)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.animation.ValueAnimator.doAnimationFrame(ValueAnimator.java:1427)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:759)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.animation.ValueAnimator$AnimationHandler$1.run(ValueAnimator.java:801)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.view.Choreographer.doCallbacks(Choreographer.java:686)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.view.Choreographer.doFrame(Choreographer.java:619)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.os.Handler.handleCallback(Handler.java:739)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:95)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:148)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:7325)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Native Method)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)

05-21 13:48:28.086 30958 30958 E AndroidRuntime:    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)