Failed resolution of: Lcom/google/android/gms/internal/zzdcc;

Here is my function :

 private void initQRReader() {

        try {
            if (qrEader != null && qrEader.isCameraRunning()) {
                qrEader.releaseAndCleanup();
            }

            qrEader = new QREader.Builder(context, binding.cameraView, new QRDataListener() {
                @Override
                public void onDetected(final String data) {

                   //My work
                }
            }).facing(QREader.BACK_CAM)
                    .enableAutofocus(true)
                    .height(binding.cameraView.getHeight())
                    .width(binding.cameraView.getWidth())
                    .build();
        } catch (Exception e) {
            e.printStackTrace();
            toast("Sorry scanner is not supported on this device.");
        }
    }

And also followed onResume and onPause methods to make this thing work. Please help me.

Facing this issue. Suddenly it started with version 2.1.2 now its even not working with 2.1.1

01-03 10:22:22.227 6808-6808/com.Invoice.maker E/AndroidRuntime: FATAL EXCEPTION: main Process: com.Invoice.maker, PID: 6808 java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/internal/zzdcc; at com.google.android.gms.vision.barcode.BarcodeDetector$Builder.<init>(Unknown Source:5) at github.nisrulz.qreader.BarcodeDetectorHolder.getBarcodeDetector(BarcodeDetectorHolder.java:38) at github.nisrulz.qreader.QREader.<init>(QREader.java:104) at github.nisrulz.qreader.QREader.<init>(QREader.java:40) at github.nisrulz.qreader.QREader$Builder.build(QREader.java:357) at com.invoiceapp.Main.CodeScannerActivity.initQRReader(CodeScannerActivity.java:109) at com.invoiceapp.Main.CodeScannerActivity.access$000(CodeScannerActivity.java:22) at com.invoiceapp.Main.CodeScannerActivity$1.onGranted(CodeScannerActivity.java:40) at com.invoiceapp.Main.BaseActivity$27.onPermissionsGranted(BaseActivity.java:3636) at com.kishan.askpermission.AskPermissionImp.requestAppPermissions(AskPermissionImp.java:71) at com.kishan.askpermission.ShadowFragment.onCreate(ShadowFragment.java:41) at android.app.Fragment.performCreate(Fragment.java:2489) at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1237) at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2407) at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2186) at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2142) at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2043) at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3032) at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2979) at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:178) at android.app.Activity.performCreate(Activity.java:7005) at android.app.Activity.performCreate(Activity.java:6990) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856) at android.app.ActivityThread.-wrap11(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6494) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) Caused by: java.lang.ClassNotFoundException: com.google.android.gms.internal.zzdcc at java.lang.VMClassLoader.findLoadedClass(Native Method) at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:738) at java.lang.ClassLoader.loadClass(ClassLoader.java:363) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at com.google.android.gms.vision.barcode.BarcodeDetector$Builder.<init>(Unknown Source:5)  at github.nisrulz.qreader.BarcodeDetectorHolder.getBarcodeDetector(BarcodeDetectorHolder.java:38)  at github.nisrulz.qreader.QREader.<init>(QREader.java:104)  at github.nisrulz.qreader.QREader.<init>(QREader.java:40)  at github.nisrulz.qreader.QREader$Builder.build(QREader.java:357)  at com.invoiceapp.Main.CodeScannerActivity.initQRReader(CodeScannerActivity.java:109)  at com.invoiceapp.Main.CodeScannerActivity.access$000(CodeScannerActivity.java:22)  at com.invoiceapp.Main.CodeScannerActivity$1.onGranted(CodeScannerActivity.java:40)  at com.invoiceapp.Main.BaseActivity$27.onPermissionsGranted(BaseActivity.java:3636)  at com.kishan.askpermission.AskPermissionImp.requestAppPermissions(AskPermissionImp.java:71)  at com.kishan.askpermission.ShadowFragment.onCreate(ShadowFragment.java:41)  at android.app.Fragment.performCreate(Fragment.java:2489)  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1237)  at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2407)  at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2186)  at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2142)  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2043)  at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3032)  at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2979)  at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:178)  at android.app.Activity.performCreate(Activity.java:7005)  at android.app.Activity.performCreate(Activity.java:6990)  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)  at android.app.ActivityThread.-wrap11(Unknown Source:0)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)  at android.os.Handler.dispatchMessage(Handler.java:106)  at android.os.Looper.loop(Looper.java:164)  at android.app.ActivityThread.main(ActivityThread.java:6494)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)  Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/internal/zzbck; at com.google.android.gms.vision.barcode.BarcodeDetector$Builder.<init>(Unknown Source:5)  at github.nisrulz.qreader.BarcodeDetectorHolder.getBarcodeDetector(BarcodeDetectorHolder.java:38)  at github.nisrulz.qreader.QREader.<init>(QREader.java:104)  at github.nisrulz.qreader.QREader.<init>(QREader.java:40)  at github.nisrulz.qreader.QREader$Builder.build(QREader.java:357)  at com.invoiceapp.Main.CodeScannerActivity.initQRReader(CodeScannerActivity.java:109)  at com.invoiceapp.Main.CodeScannerActivity.access$000(CodeScannerActivity.java:22)  at com.invoiceapp.Main.CodeScannerActivity$1.onGranted(CodeScannerActivity.java:40)  at com.invoiceapp.Main.BaseActivity$27.onPermissionsGranted(BaseActivity.java:3636)  at com.kishan.askpermission.AskPermissionImp.requestAppPermissions(AskPermissionImp.java:71)  at com.kishan.askpermission.ShadowFragment.onCreate(ShadowFragment.java:41)  at android.app.Fragment.performCreate(Fragment.java:2489)  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1237)  at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2407)  at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2186)  at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2142)  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2043)  at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3032)  at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2979)  at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:178)  at android.app.Activity.performCreate(Activity.java:7005)  at android.app.Activity.performCreate(Activity.java:6990)  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)  at android.app.ActivityThread.-wrap11(Unknown Source:0)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)  at android.os.Handler.dispatchMessage(Handler.java:106)  at android.os.Looper.loop(Looper.java:164)  at android.app.ActivityThread.main(ActivityThread.java:6494)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)  Caused by: java.lang.ClassNotFoundException: Didn’t find class “com.google.android.gms.internal.zzbck” on path: DexPathList[[zip file “/data/app/com.Invoice.maker-g0I69RbPTxHTnyU9ounT5A==/base.apk”],nativeLibraryDirectories=[/data/app/com.Invoice.maker-g0I69RbPTxHTnyU9ounT5A==/lib/x86, /data/app/com.Invoice.maker-g0I69RbPTxHTnyU9ounT5A==/base.apk!/lib/x86, /system/lib, /vendor/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125) at java.lang.ClassLoader.loadClass(ClassLoader.java:379) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at com.google.android.gms.vision.barcode.BarcodeDetector$Builder.<init>(Unknown Source:5)  at github.nisrulz.qreader.BarcodeDetectorHolder.getBarcodeDetector(BarcodeDetectorHolder.java:38)  at github.nisrulz.qreader.QREader.<init>(QREader.java:104)  at github.nisrulz.qreader.QREader.<init>(QREader.java:40)  at github.nisrulz.qreader.QREader$Builder.build(QREader.java:357)  at com.invoiceapp.Main.CodeScannerActivity.initQRReader(CodeScannerActivity.java:109)  at com.invoiceapp.Main.CodeScannerActivity.access$000(CodeScannerActivity.java:22)  at com.invoiceapp.Main.CodeScannerActivity$1.onGranted(CodeScannerActivity.java:40)  at com.invoiceapp.Main.BaseActivity$27.onPermissionsGranted(BaseActivity.java:3636)  at com.kishan.askpermission.AskPermissionImp.requestAppPermissions(AskPermissionImp.java:71)  at com.kishan.askpermission.ShadowFragment.onCreate(ShadowFragment.java:41)  at android.app.Fragment.performCreate(Fragment.java:2489)  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1237)  at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2407)  at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2186)  at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2142)  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2043)  at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3032)  at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2979)  at android.app.FragmentController.dispatchActivityCreated(FragmentController.java:178)  at android.app.Activity.performCreate(Activity.java:7005)  at android.app.Activity.performCreate(Activity.java:6990)  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)  at android.app.ActivityThread.-wrap11(Unknown Source:0)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)  at android.os.Handler.dispatchMessage(Handler.java:106)  at android.os.Looper.loop(Looper.java:164)  at android.app.ActivityThread.main(ActivityThread.java:6494)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

[giangriver]

I meet the same issue and resolved it by adding “com.google.android.gms:play-services-vision” implementation ‘com.google.android.gms:play-services-vision:15.0.2’

[samsax]

I solved it adding: implementation ‘com.google.android.gms:play-services-vision:20.1.3’