no class found exception

[mohsin111]

I have use your library in my project.i have run this project with lolipop version.I used ADT 22.0 version.I have found below error:

04-08 10:30:15.540: E/AndroidRuntime(27571): FATAL EXCEPTION: main
04-08 10:30:15.540: E/AndroidRuntime(27571): Process: com.example.newqrcodereader, PID: 27571
04-08 10:30:15.540: E/AndroidRuntime(27571): java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/zxing/qrcode/QRCodeReader;
04-08 10:30:15.540: E/AndroidRuntime(27571): at com.dlazaro66.qrcodereaderview.QRCodeReaderView.surfaceCreated(QRCodeReaderView.java:125)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.SurfaceView.updateWindow(SurfaceView.java:579)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:176)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:847)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1986)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1077)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5884)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.Choreographer.doCallbacks(Choreographer.java:580)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.Choreographer.doFrame(Choreographer.java:550)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.os.Handler.handleCallback(Handler.java:739)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.os.Handler.dispatchMessage(Handler.java:95)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.os.Looper.loop(Looper.java:135)
04-08 10:30:15.540: E/AndroidRuntime(27571): at android.app.ActivityThread.main(ActivityThread.java:5312)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.reflect.Method.invoke(Native Method)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.reflect.Method.invoke(Method.java:372)
04-08 10:30:15.540: E/AndroidRuntime(27571): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
04-08 10:30:15.540: E/AndroidRuntime(27571): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:696)
04-08 10:30:15.540: E/AndroidRuntime(27571): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.zxing.qrcode.QRCodeReader" on path: DexPathList[[zip file "/data/app/com.example.newqrcodereader-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
04-08 10:30:15.540: E/AndroidRuntime(27571): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
04-08 10:30:15.540: E/AndroidRuntime(27571): ... 19 more
04-08 10:30:15.540: E/AndroidRuntime(27571): Suppressed: java.lang.ClassNotFoundException: com.google.zxing.qrcode.QRCodeReader
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.Class.classForName(Native Method)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
04-08 10:30:15.540: E/AndroidRuntime(27571): at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
04-08 10:30:15.540: E/AndroidRuntime(27571): ... 20 more
04-08 10:30:15.540: E/AndroidRuntime(27571): Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

[dlazaro66]

It seems it's a problem with libraries linking. Sorry, can you provide more information about how are you integrating this library in your project? Using Android studio and getting the library via Gradle dependency is working for mi with Lollipop devices.

[hjJunior]

I have the same problem :(

I tried import a lib of zxing but not ressolved
I'm importing on gradle dependencies
compile 'com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.0@aar'

and
allprojects { repositories { jcenter() } }

[kendrikat]

Workaround - Add the lib explicitly.

    compile 'com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.0@aar'
    compile 'com.google.zxing:core:3.2.0'

[dlazaro66]

As @kendrikat says, at the moment you can this workaround while I try to fix this

compile 'com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.0@aar'
compile 'com.google.zxing:core:3.2.0'

[dlazaro66]

I think is solved now.
Please check this https://github.com/dlazaro66/QRCodeReaderView#add-it-to-your-project and try that steps, if still not working after that please reopen de issue