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POClass not found when using zxing
 

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  1. POClass not found when using zxing
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    <p>So i'm developing an app that can scan QR codes. I downloaded the ZXing library, built it using apache ant to get the core.jar, put it in my project folder and added it as a jar to the build path. No when i try do the following:</p> <pre><code>Intent intent = new Intent("com.google.zxing.client.android.SCAN"); intent.putExtra("SCAN_MODE", "QR_CODE_MODE"); startActivityForResult(intent, 0); </code></pre> <p>I get the following error:</p> <pre><code>08-14 18:52:01.191: E/AndroidRuntime(617): FATAL EXCEPTION: main 08-14 18:52:01.191: E/AndroidRuntime(617): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.android.Wowser/com.google.zxing.client.android.CaptureActivity}: java.lang.ClassNotFoundException: com.google.zxing.client.android.CaptureActivity in loader dalvik.system.PathClassLoader[/data/app/com.android.Wowser-1.apk] 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.os.Handler.dispatchMessage(Handler.java:99) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.os.Looper.loop(Looper.java:123) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.ActivityThread.main(ActivityThread.java:3683) 08-14 18:52:01.191: E/AndroidRuntime(617): at java.lang.reflect.Method.invokeNative(Native Method) 08-14 18:52:01.191: E/AndroidRuntime(617): at java.lang.reflect.Method.invoke(Method.java:507) 08-14 18:52:01.191: E/AndroidRuntime(617): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 08-14 18:52:01.191: E/AndroidRuntime(617): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 08-14 18:52:01.191: E/AndroidRuntime(617): at dalvik.system.NativeStart.main(Native Method) 08-14 18:52:01.191: E/AndroidRuntime(617): Caused by: java.lang.ClassNotFoundException: com.google.zxing.client.android.CaptureActivity in loader dalvik.system.PathClassLoader[/data/app/com.android.Wowser-1.apk] 08-14 18:52:01.191: E/AndroidRuntime(617): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 08-14 18:52:01.191: E/AndroidRuntime(617): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 08-14 18:52:01.191: E/AndroidRuntime(617): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 08-14 18:52:01.191: E/AndroidRuntime(617): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561) 08-14 18:52:01.191: E/AndroidRuntime(617): ... 11 more &lt;?xml version="1.0" encoding="utf-8"?&gt; </code></pre> <p></p> <pre><code>&lt;uses-sdk android:minSdkVersion="10" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt; &lt;uses-permission android:name="android.permission.CAMERA"/&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" &gt; &lt;activity android:name="com.android.Wowser.DealsActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="com.google.zxing.client.android.CaptureActivity" android:configChanges="orientation|keyboardHidden" android:screenOrientation="landscape" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" android:windowSoftInputMode="stateAlwaysHidden" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.DEFAULT" /&gt; &lt;/intent-filter&gt; &lt;intent-filter&gt; &lt;action android:name="com.google.zxing.client.android.SCAN" /&gt; &lt;category android:name="android.intent.category.DEFAULT" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name=".Register" /&gt; &lt;activity android:name=".SignIn" /&gt; &lt;activity android:name=".Options" /&gt; &lt;activity android:name=".Scan" /&gt; &lt;/application&gt; </code></pre> <p></p> <p>Can anyone tell me how i set up the Zxing to use it properly or where i might be going wrong? Any help is greatly appreciated.</p>
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    1. COCan you post your manifest file?
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    2. CODo *not* copy and paste our manifest!
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      1. USSean Owen
    3. CO@Sean Owen. Zxing is the best Barcode Scanner for android. But why there is no better way to integrate this without installing your app? You should create a library for android to easily handle this.
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