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IDProjectCategoryView StatusLast Update
0007289Talerwallet (Android App)public2022-08-19 15:06
Reportersebasjm Assigned Togrote  
PrioritynormalSeverityminorReproducibilityhave not tried
Status resolvedResolutionfixed 
Product Versiongit (master) 
Target Versiongit (master) 
Summary0007289: can't read qr codes with inverted colors
Descriptionblack background and white squares don't work with the qr scan.

other qr scanners are able to read the qr
TagsNo tags attached.

Activities

grote

2022-08-17 20:54

developer   ~0019015

Our scanning library allows us to request an inverted scan: https://github.com/journeyapps/zxing-android-embedded/blob/40260272fcff4f14181803495e7d370c23e35db7/zxing-android-embedded/src/com/google/zxing/client/android/Intents.java#L218

However, how do we know whether we need to scan an inverted code beforehand?

grote

2022-08-17 20:55

developer   ~0019016

I hit send too fast. There's actually a MIXED_SCAN mode which should help.

grote

2022-08-17 21:16

developer   ~0019017

Implemented in https://git.taler.net/taler-android.git/commit/?id=48b609b653180b1145b2103097837e514e58364d

sebasjm could you check if this works for you now? I inverted a code with GIMP and could scan that.

sebasjm

2022-08-19 15:06

developer   ~0019019

it worked!

Issue History

Date Modified Username Field Change
2022-07-24 16:10 sebasjm New Issue
2022-07-24 16:10 sebasjm Status new => assigned
2022-07-24 16:10 sebasjm Assigned To => grote
2022-08-17 20:54 grote Note Added: 0019015
2022-08-17 20:55 grote Note Added: 0019016
2022-08-17 21:16 grote Note Added: 0019017
2022-08-19 15:06 sebasjm Status assigned => resolved
2022-08-19 15:06 sebasjm Resolution open => fixed
2022-08-19 15:06 sebasjm Note Added: 0019019