Android: ClassNotFoundException while including ZXing

android, cordova, zxing

Solution

You should ensure:

- The ZXing Library is Added to your libs directory

- Import the ZXing library in the properties/Build path

- Ensure -- and this is the important part -- in the tab "Order and Export" that the Android Private Libraries is activated.

Normally, with the last Eclipse Android Plugins all this proccess is automatic when paste a jar inside the libs directory but there are some problems when add new libraries in old proyects. Try to enable the android private libraries.

ExtraBall: If you only want to capture barcodes you can try this fork of Zxing with the only indispensable of ZXing http://code.google.com/p/android-zxinglib/

Problem

I know there are a lot of questions already. I've been going through all of them, but still I`m not able to solve my issue. I was asked to extend an already existing android app, which is based on `PhoneGap`. I checked out the sources from a repo, and realized that the first developer included some `library` as `dependency`. i followed the instructions here, build in the `core` of `ZXing` isn't any `build.xml`for `ant`. I went through the instructions at XZing Getting started, build my own `core-2.3.jar` tried to include, but failed. Same with the ready-deployed `core.jar` from the page I included the the jars in the `/libs` folder, imported is a `external jar`, nothing worked. I`m getting following error everytime: ``` 07-24 17:09:47.554: E/AndroidRuntime(8113): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{dev.tesobe.mobilepayment/com.google.zxing.client.android.CaptureActivity}: java.lang.ClassNotFoundException: Didn't find class "com.google.zxing.client.android.CaptureActivity" on path: /data/app/dev.tesobe.mobilepayment-1.apk 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.ActivityThread.access$600(ActivityThread.java:141) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.os.Handler.dispatchMessage(Handler.java:99) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.os.Looper.loop(Looper.java:137) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.ActivityThread.main(ActivityThread.java:5041) 07-24 17:09:47.554: E/AndroidRuntime(8113): at java.lang.reflect.Method.invokeNative(Native Method) 07-24 17:09:47.554: E/AndroidRuntime(8113): at java.lang.reflect.Method.invoke(Method.java:511) 07-24 17:09:47.554: E/AndroidRuntime(8113): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 07-24 17:09:47.554: E/AndroidRuntime(8113): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 07-24 17:09:47.554: E/AndroidRuntime(8113): at dalvik.system.NativeStart.main(Native Method) 07-24 17:09:47.554: E/AndroidRuntime(8113): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.zxing.client.android.CaptureActivity" on path: /data/app/dev.tesobe.mobilepayment-1.apk 07-24 17:09:47.554: E/AndroidRuntime(8113): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65) 07-24 17:09:47.554: E/AndroidRuntime(8113): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 07-24 17:09:47.554: E/AndroidRuntime(8113): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.Instrumentation.newActivity(Instrumentation.java:1054) 07-24 17:09:47.554: E/AndroidRuntime(8113): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097) ``` The manifest-declaration looks like this: ``` <!-- ZXing activities --> <activity android:name="com.google.zxing.client.android.CaptureActivity" android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" android:windowSoftInputMode="stateAlwaysHidden" android:exported="false"> <intent-filter> <action android:name="com.phonegap.plugins.barcodescanner.SCAN"/> <category android:name="android.intent.category.DEFAULT"/> </intent-filter> </activity> <activity android:name="com.google.zxing.client.android.encode.EncodeActivity" android:label="@string/share_name"> <intent-filter> <action android:name="com.phonegap.plugins.barcodescanner.ENCODE"/> <category android:name="android.intent.category.DEFAULT"/> </intent-filter> </activity> ``` So, anyone any ideas, why I'm not able to include the `CaptureActivity`?

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