Scanning codes doesn't work on Android

[fciprian42]

Hi, We meet an issue in our react native project on Android only, for IOS it's work perfectly We use both package in the project vision-camera-ocr and vision-camera-code-scanner and the recognition with codes dont work, yet I see no android config on the package git I show you the logs : ERROR Frame Processor threw an error: Exception in HostFunction: java.lang.VerifyError: Verifier rejected class com.google.mlkit.vision.barcode.BarcodeScanning: com.google.mlkit.vision.barcode.BarcodeScanner com.google.mlkit.vision.barcode.BarcodeScanning.getClient() failed to verify: com.google.mlkit.vision.barcode.BarcodeScanner com.google.mlkit.vision.barcode.BarcodeScanning.getClient(): [0x10] can't resolve returned type 'Unresolved Reference: com.google.mlkit.vision.barcode.BarcodeScanner' or 'Unresolved Reference: com.google.mlkit.vision.barcode.internal.BarcodeScannerImpl' com.google.mlkit.vision.barcode.BarcodeScanner com.google.mlkit.vision.barcode.BarcodeScanning.getClient(com.google.mlkit.vision.barcode.BarcodeScannerOptions) failed to verify: com.google.mlkit.vision.barcode.BarcodeScanner com.google.mlkit.vision.barcode.BarcodeScanning.getClient(com.google.mlkit.vision.barcode.BarcodeScannerOptions): [0x15] can't resolve returned type 'Unresolved Reference: com.google.mlkit.vision.barcode.BarcodeScanner' or 'Unresolved Reference: com.google.mlkit.vision.barcode.internal.BarcodeScannerImpl' (declaration of 'com.google.mlkit.vision.barcode.BarcodeScanning' appears in /data/app/~~6fE0Vr3mVUJ9FiENpm0w5w==/com.neurowaste.nwglobal.global-Es6qHUrtm-hLZ31btXlOcQ==/base.apk!classes6.dex) or ERROR Frame Processor threw an error: Exception in HostFunction: java.lang.NoClassDefFoundError: com.google.mlkit.vision.barcode.BarcodeScanning

There is our build.gradle : buildscript { ext { buildToolsVersion = "30.0.2" minSdkVersion = 21 compileSdkVersion = 31 targetSdkVersion = 31 ndkVersion = "21.4.7075529" googlePlayServicesVersion = "17.0.0" } repositories { google() mavenCentral() } dependencies { classpath("com.android.tools.build:gradle:4.2.2") classpath 'com.google.gms:google-services:4.3.10' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } }

The package version is 0.2.0 and 2.13.3 for react-native-vision-camera

I use the code above for run the detection (I've tried both versions prupose on the git)

const frameProcessor = useFrameProcessor(frame => { 'worklet'; const detectedBarcodes = scanBarcodes(frame, [BarcodeFormat.ALL_FORMATS], { checkInverted: true, }); runOnJS(setCodes)(detectedBarcodes); }, []);

The problem occur when with try to scan on android.. If anyone have a clue or something! Thanks

[mohshafie]

Same issue

[yberstad]

@fciprian42 or @mohshafie, I'm having the same issue, did you find a workaround?

[yberstad]

Hi again! Just realized that if I remove the vision-camera-ocr package, it starts to work. But I want both, so that is not an option for me, but it might give some clues. I'll Investigate further.

[yberstad]

I found a fix:

In vision-camera-ocr I changed the mlkit version: From: implementation 'com.google.android.gms:play-services-mlkit-text-recognition:18.0.0' To: implementation 'com.google.mlkit:text-recognition:16.0.0-beta6'

And in vision-camera-code-scanner I changed the mlkit version: From: implementation 'com.google.mlkit:barcode-scanning:17.0.0' To: implementation 'com.google.mlkit:barcode-scanning:17.0.2'

• the Barcode class moved to the common namespace.

Patch files: vision-camera-ocr:

diff --git a/node_modules/vision-camera-ocr/android/build.gradle b/node_modules/vision-camera-ocr/android/build.gradle
index 6d81d85..e966f0f 100644
--- a/node_modules/vision-camera-ocr/android/build.gradle
+++ b/node_modules/vision-camera-ocr/android/build.gradle
@@ -129,6 +129,6 @@ dependencies {
   implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 
   implementation project(':react-native-vision-camera')
-  implementation 'com.google.android.gms:play-services-mlkit-text-recognition:18.0.0'
+  implementation 'com.google.mlkit:text-recognition:16.0.0-beta6'
   implementation "androidx.camera:camera-core:1.1.0-alpha08"
 }

vision-camera-code-scanner:

diff --git a/node_modules/vision-camera-code-scanner/android/build.gradle b/node_modules/vision-camera-code-scanner/android/build.gradle
index b6bd964..4829f31 100644
--- a/node_modules/vision-camera-code-scanner/android/build.gradle
+++ b/node_modules/vision-camera-code-scanner/android/build.gradle
@@ -57,5 +57,5 @@ dependencies {
     implementation "com.facebook.react:react-native:+"  // From node_modules
     api project(":react-native-vision-camera")
     implementation "androidx.camera:camera-core:1.1.0-alpha06"
-    implementation 'com.google.mlkit:barcode-scanning:17.0.0'
+    implementation 'com.google.mlkit:barcode-scanning:17.0.2'
 }
diff --git a/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/BarcodeConverter.java b/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/BarcodeConverter.java
index 74e208b..eb4ed07 100644
--- a/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/BarcodeConverter.java
+++ b/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/BarcodeConverter.java
@@ -7,7 +7,7 @@ import androidx.annotation.NonNull;
 
 import com.facebook.react.bridge.WritableNativeArray;
 import com.facebook.react.bridge.WritableNativeMap;
-import com.google.mlkit.vision.barcode.Barcode;
+import com.google.mlkit.vision.barcode.common.Barcode;
 
 import java.util.List;
 
diff --git a/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/VisionCameraCodeScannerPlugin.java b/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/VisionCameraCodeScannerPlugin.java
index 8198564..a3adafd 100644
--- a/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/VisionCameraCodeScannerPlugin.java
+++ b/node_modules/vision-camera-code-scanner/android/src/main/java/com/visioncameracodescanner/VisionCameraCodeScannerPlugin.java
@@ -24,7 +24,7 @@ import androidx.camera.core.ImageProxy;
 import com.google.android.gms.tasks.Tasks;
 import com.mrousavy.camera.frameprocessor.FrameProcessorPlugin;
 import com.google.android.gms.tasks.Task;
-import com.google.mlkit.vision.barcode.Barcode;
+import com.google.mlkit.vision.barcode.common.Barcode;
 import com.google.mlkit.vision.barcode.BarcodeScanner;
 import com.google.mlkit.vision.barcode.BarcodeScanning;
 import com.google.mlkit.vision.barcode.BarcodeScannerOptions;