ANIME WATCHER crash when click "watch" if in the episode option we type 0 number #5

PROJECT INFORMATION

• REPOSITORIES :https://github.com/balvinderz/animewatcher
• APP NAME : ANIME WATCHER
• ISSUES : https://github.com/balvinderz/animewatcher/issues/5
• PUBLISHER : balvinderZ

DESCRIBE BUG

when a user wants to watch an episode of an anime, the user just needs to write the episodes number they want to watch, but if the user writes the number "0" and presses the watch button this application crashes

STEP TO REPRODUCE

• open the app
• click on dub or sub optiont
• click on search icon and search any anime you want to watch
• then chose an anime
• then in episode option type number"0" and click watch
• see error

EXPECTED BEHAVIOR

this application will display an error dialog if the user incorrectly wrote the episodes number

device : oppo neo7
os : android 6.0

BUG RECORDING

LOG CAT

Process: com.stuffbox.webscraper, PID: 29335
java.lang.ArrayIndexOutOfBoundsException: length=135; index=-1
    at java.util.ArrayList.get(ArrayList.java:310)
    at com.stuffbox.webscraper.selectEpisode$3.onClick(selectEpisode.java:116)
    at android.view.View.performClick(View.java:4848)
    at android.view.View$PerformClick.run(View.java:20299)
    at android.os.Handler.handleCallback(Handler.java:815)
    at android.os.Handler.dispatchMessage(Handler.java:104)
    at android.os.Looper.loop(Looper.java:218)
    at android.app.ActivityThread.main(ActivityThread.java:5657)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:990)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:785)```