app crashes when selecting multiple languages

[TalOrenshtein]

Steps to reproduce:

1. Go to settings
2. Enable the multiple languages toggle
3. Select 2 or more languages.

As soon as I confirm the languages, the app crash and refuse to open. Log:

java.lang.RuntimeException: Unable to resume activity {io.github.subhamtyagi.ocr/io.github.subhamtyagi.ocr.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=130; index=-1
	at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4774)
	at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4807)
	at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:57)
	at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
	at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:179)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2307)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:201)
	at android.os.Looper.loop(Looper.java:288)
	at android.app.ActivityThread.main(ActivityThread.java:7924)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=130; index=-1
	at java.util.ArrayList.get(ArrayList.java:439)
	at io.github.subhamtyagi.ocr.MainActivity.t(Unknown Source:8)
	at io.github.subhamtyagi.ocr.MainActivity.onResume(Unknown Source:7)
	at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1570)
	at android.app.Activity.performResume(Activity.java:8474)
	at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4764)
	... 13 more

[muchuelo]

I have exactly the same problem, except the app does not crash immediately after adding extra languages to the list. But it crashes every time I try to start it if multiple languages are selected.

Uninstalled and reinstalled several times to confirm that selection of multiple languages causes the crash.

After a clean install, the app chooses the default language itself, then successfully downloads the training data, and successfully OCR's an image of text, but once you go into the settings and change anything (add multiple languages, or even just change Tesseract quality from Fast to Best) the app does not download training data for selected languages, and once closed, will always crash when trying to start the app again.

[wincentbalin]

Pull request #89 should fix the problem.

[j-lakeman]

@SubhamTyagi any updates on this?

[hubortje]

The issue persists with 4.0 (F-Droid) on GrapheneOS.

type: crash
osVersion: google/husky/husky:14/UQ1A.240205.004/2024022800:user/release-keys
package: io.github.subhamtyagi.ocr:12
process: io.github.subhamtyagi.ocr
processUptime: 80 + 204 ms
installer: org.fdroid.fdroid

java.lang.RuntimeException: Unable to start activity ComponentInfo{io.github.subhamtyagi.ocr/io.github.subhamtyagi.ocr.MainActivity}: java.lang.IndexOutOfBoundsException: Index -1 out of bounds for length 130
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3833)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3974)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2475)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:205)
	at android.os.Looper.loop(Looper.java:294)
	at android.app.ActivityThread.main(ActivityThread.java:8279)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
	at com.android.internal.os.ExecInit.main(ExecInit.java:49)
	at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
	at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:359)
Caused by: java.lang.IndexOutOfBoundsException: Index -1 out of bounds for length 130
	at jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
	at jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
	at jdk.internal.util.Preconditions.checkIndex(Preconditions.java:266)
	at java.util.Objects.checkIndex(Objects.java:359)
	at java.util.ArrayList.get(ArrayList.java:434)
	at io.github.subhamtyagi.ocr.MainActivity.t(Unknown Source:8)
	at io.github.subhamtyagi.ocr.MainActivity.s(SourceFile:32)
	at io.github.subhamtyagi.ocr.MainActivity.u(SourceFile:246)
	at io.github.subhamtyagi.ocr.MainActivity.onCreate(SourceFile:246)
	at android.app.Activity.performCreate(Activity.java:8674)
	at android.app.Activity.performCreate(Activity.java:8652)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1461)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3815)
	... 14 more

[Thomas-AA]

Hi,

I experience the same problem. on release 11 & 12 (v4.0) from f-droid.org

Android 10 / LineageOS

[deadcombo]

Sign-in to GitHub, go to Actions in this repo, open the latest one and download the .apk under Artifacts. You can only download it if you're logged in.

[T8RIN]

You can use ImageToolbox

[vishalscodes]

Same problem here. Here's a recording:

https://github.com/SubhamTyagi/android-ocr/assets/104351431/c3f9233d-96ad-4f47-b5ee-484c74c1007a

EDIT: Upon testing, @deadcombo's answer works.