Bop music player v1.1.2; The app crashed when I played a genre or an album, played the next song on the album, and then when back to play another different album.

Project Information

• Repository: https://github.com/iamSahdeep/Bop

• Project Name: Bop music player

Describe the bug
On the app, I can play an album or genre of music. When I click on a genre of music, or a music album, it automatically plays all the song in that collection. I accessed the music navigation page where I can pause a track, rewind/fast-forward a track or play the next track on queue.
I noticed that after I played the next track by clicking on the appropriate button, and went back to try to play another genre/album; the app crashed.

To Reproduce

• Launch app
• Access options menu
• Goto either genres page or album page.
• Open an album or genre with at least 2 songs in it.
• Play the genre/album by clicking on it
• On the now playing screen, tap on the music note icon to open music navigation page. (The icon is on the right side of the app)
• On the music navigation page; Click the button to play next track
• After the next track is Now playing; go back to the main album/genre list
• Click on any other genre/album
• See error. (The app will crash).

Expected behavior
I expected that I could play any music album or genre of music at any time I desired. Even after performing some other actions on the app, like playing the next track on a previous album/genre I was on.

Screen recording

Test Environment

• Device: Redmi Note 5 Pro
• OS: Android 8.1
• Software version: Bop music player v1.1.2

Additional context
Here's the logcat from the crash;

    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2814)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
    at android.app.ActivityThread.-wrap11(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1613)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:176)
    at android.app.ActivityThread.main(ActivityThread.java:6635)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
    at java.util.ArrayList.get(ArrayList.java:437)
    at com.sahdeepsingh.Bop.services.ServicePlayMusic.h(Unknown Source:16)
    at com.sahdeepsingh.Bop.Activities.PlayingNowList.onCreate(Unknown Source:193)
    at android.app.Activity.performCreate(Activity.java:7084)
    at android.app.Activity.performCreate(Activity.java:7075)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1215)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2767)
    ... 9 more

GitHub Account

https://github.com/HarryHeights

This issue has been reported to the project owner and he has acknowledged it as a bug and of high priority.