Can't make work the barcode scanner

[mvindel-dev]

I've just cloned the repo: https://github.com/robingenz/ionic-capacitor-barcode-scanner and it didn't work in my device. Also implemented in my project https://github.com/mvindel-dev/PokeAPI in src/view/team on the branch qrScan and it also didn't work. On my repo i've followed step by step the guide https://capawesome.io/blog/how-to-build-an-ionic-barcode-scanner-with-capacitor/ and doesn't work. I don't know if i'm missing something or it's just my device that doesn't work well with this plugin (I have a Xiaomi Redmi Note 11s).

Thanks :)

[robingenz]

What does "doesn't work" mean? Please share an error message.

[mvindel-dev]

When I click on the scan button in my device nothing happens. I get a confirmation message about the grants for the camera but the camera doesn't open to scan the code

[robingenz]

Please take a look at Logcat in Android Studio.

[mvindel-dev]

What should I look for? A lot of things come fast on the logcat
Something like this?:
2024-04-07 12:55:12.594 6277-6298 BufferQueueProducer io.ionic.starter E SurfaceView[io.ionic.starter/io.ionic.starter.MainActivity]#19(BLAST Consumer)19 dequeueBuffer: BufferQueue has been abandoned
2024-04-07 12:55:12.594 1300-8268 Camera3-OutputStream cameraserver E getBufferLockedCommon: Stream 0: Can't dequeue next output buffer: No such device (-19)
2024-04-07 12:55:12.596 6277-6298 CameraDevice-JV-0 io.ionic.starter W Device error received, code 3, frame number 0, request ID 0, subseq ID 0
2024-04-07 12:55:12.597 6277-6298 CameraDevice-JV-0 io.ionic.starter W got error frame 0
2024-04-07 12:55:12.597 2613-2752 gralloc4 com.android.systemui E Empty SMPTE 2094-40 data
2024-04-07 12:55:12.598 6277-6298 CameraDevice-JV-0 io.ionic.starter W Repeating request error received. Last frame number is 0
2024-04-07 12:55:12.599 6277-6277 BLASTBufferQueue io.ionic.starter D VRI[MainActivity]#17 destructor()
2024-04-07 12:55:12.599 6277-6277 BufferQueueConsumer io.ionic.starter D VRI[MainActivity]#17(BLAST Consumer)17 disconnect
2024-04-07 12:55:12.602 6277-6277 VRI[GmsBar...eActivity] io.ionic.starter D vri.reportDrawFinished syncSeqId=0 android.view.ViewRootImpl.lambda$createSyncIfNeeded$4$android-view-ViewRootImpl:3920 android.view.ViewRootImpl$$ExternalSyntheticLambda1.run:6 android.os.Handler.handleCallback:942 android.os.Handler.dispatchMessage:99 android.os.Looper.loopOnce:211
2024-04-07 12:55:12.602 1068-32268 C2MtkBufferManager and...ardware.media.c2@1.2-mediatek D over 5000ms not request from VCodec but callback hooked, slow BM Cc fetch thread
2024-04-07 12:55:12.604 1144-1144 BufferStateLayer surfaceflinger D io.ionic.starter/com.google.mlkit.vision.codescanner.internal.GmsBarcodeScanningDelegateActivity#6379 setBuffer frameId=1, bufferId=26959509717104 fenceId=770, w= 1080, h=2400
2024-04-07 12:55:12.606 6277-6277 Capacitor io.ionic.starter E scan failed.
com.google.mlkit.common.MlKitException: Failed to scan code.
at com.google.mlkit.vision.codescanner.internal.zze.zzc(com.google.android.gms:play-services-code-scanner@@16.0.0-beta3:4)
at com.google.mlkit.vision.codescanner.internal.zzf.onActivityResult(com.google.android.gms:play-services-code-scanner@@16.0.0-beta3:5)
at androidx.activity.result.ActivityResultRegistry.doDispatch(ActivityResultRegistry.java:418)
at androidx.activity.result.ActivityResultRegistry.dispatchResult(ActivityResultRegistry.java:375)
at androidx.activity.ComponentActivity.onActivityResult(ComponentActivity.java:818)
at android.app.Activity.dispatchActivityResult(Activity.java:8923)
at android.app.ActivityThread.deliverResults(ActivityThread.java:5592)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:5638)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:67)
at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2437)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:211)
at android.os.Looper.loop(Looper.java:300)
at android.app.ActivityThread.main(ActivityThread.java:8294)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:580)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1028)

2024-04-07 12:55:12.606 6277-6277 Capacitor io.ionic.starter D Sending plugin error: {"save":false,"callbackId":"19690729","pluginId":"BarcodeScanner","methodName":"scan","success":false,"error":{"message":"Failed to scan code."}}

[robingenz]

2024-04-07 12:55:12.606 6277-6277 Capacitor io.ionic.starter D Sending plugin error: {"save":false,"callbackId":"19690729","pluginId":"BarcodeScanner","methodName":"scan","success":false,"error":{"message":"Failed to scan code."}}

You need to check if the Google Barcode Scanner module is available and install it if necessary (see isGoogleBarcodeScannerModuleAvailable() and installGoogleBarcodeScannerModule()).

[mvindel-dev]

I get this message when i put that:
async scan(): Promise {
const granted = await this.requestPermissions();
if (!granted) {
this.presentAlert();
return;
}
const { available } = await BarcodeScanner.isGoogleBarcodeScannerModuleAvailable();
if(available){
const { barcodes } = await BarcodeScanner.scan();
this.barcodes.push(...barcodes);
}else{
const {installed} = await BarcodeScanner.installGoogleBarcodeScannerModule();
if(installed){
const { barcodes } = await BarcodeScanner.scan();
this.barcodes.push(...barcodes);
}
}
}

messages:
Property 'isGoogleBarcodeScannerModuleAvailable' does not exist on type 'BarcodeScannerPlugin'.
Property 'installGoogleBarcodeScannerModule' does not exist on type 'BarcodeScannerPlugin'.

It's ok with that?

These are the imports that I have:
import { Barcode, BarcodeScanner } from '@capacitor-mlkit/barcode-scanning';

[robingenz]

Which plugin version do you use?

[mvindel-dev]

"@capacitor-mlkit/barcode-scanning": "^5.0.0",

[robingenz]

Make sure to install version 5.4.0.

[jacksonpietro]

I'm using await BarcodeScanner.startScan(options); , work on emulator but not in real devices :/ i want use custom UI .