Crash when geometries are too complex to enconde in the QR code

Open Beginner friendly

#3,933 opened on Sep 10, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 68/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Active
Tech stack: kotlin
Domain: mobile

Research direction

Start at encodeQrBitmap in QrCodeGenerator.android.kt:38 and follow its use from GroundQrCode.kt:67. Reproduce the crash with oversized geometry or long survey data, then verify that the QR-code flow handles the ZXing WriterException instead of crashing.

Written by the indexing model from the issue text.

Description

type: bug

Crashlytics

The QR code is missing error handling when the encoded data is too large. This could be due to geometries with many vertices or long LOI/survey names, which can make the geoJSON too big to be displayed as a QR code.

Fatal Exception: com.google.zxing.WriterException: Data too big
       at com.google.zxing.qrcode.encoder.Encoder.chooseVersion(Encoder.java:320)
       at com.google.zxing.qrcode.encoder.Encoder.recommendVersion(Encoder.java:218)
       at com.google.zxing.qrcode.encoder.Encoder.encode(Encoder.java:152)
       at com.google.zxing.qrcode.QRCodeWriter.encode(QRCodeWriter.java:78)
       at org.groundplatform.ui.components.qrcode.QrCodeGenerator_androidKt.encodeQrBitmap(QrCodeGenerator.android.kt:38)
       at org.groundplatform.ui.components.qrcode.GroundQrCodeKt$GroundQrCode$qrBitmap$2$1$1.invokeSuspend(GroundQrCode.kt:67)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
       at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:586)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:807)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:717)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:704)

Dominant language: Kotlin
Stars: 294
Forks: 149
Avg merge: 1d 14h
Merged PRs (30d): 48

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