Question

我已在我自己的项目中集成了令人敬畏的zxing条形码项目，我通过意图调用它。我不希望用户再安装一个用于条形码扫描的应用。将源代码zxing-2.3.0完全复制到我的项目中并解决了所有构建错误。现在，当我运行我的应用程序时，当它达到必须执行条形码扫描应用程序崩溃时，出现以下错误。

在发布这个问题之前，我已经对此进行了很多研究，但找不到任何可以解决我问题的解决方案。提前谢谢大家。

    12-26 18:49:51.387: E/AndroidRuntime(26353): FATAL EXCEPTION: main
    12-26 18:49:51.387: E/AndroidRuntime(26353): Process: com.arrisi.selfinstall, PID: 26353
    12-26 18:49:51.387: E/AndroidRuntime(26353): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.arrisi.selfinstall/com.google.zxing.client.android.CaptureActivity}: android.view.InflateException: Binary XML file line #110: Error inflating class paths
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2198)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2257)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.ActivityThread.access$800(ActivityThread.java:139)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.os.Handler.dispatchMessage(Handler.java:102)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.os.Looper.loop(Looper.java:136)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.ActivityThread.main(ActivityThread.java:5086)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at java.lang.reflect.Method.invokeNative(Native Method)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at java.lang.reflect.Method.invoke(Method.java:515)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at dalvik.system.NativeStart.main(Native Method)
    12-26 18:49:51.387: E/AndroidRuntime(26353): Caused by: android.view.InflateException: Binary XML file line #110: Error inflating class paths
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:441)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.rInflate(GenericInflater.java:481)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.inflate(GenericInflater.java:326)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.inflate(GenericInflater.java:263)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:272)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.PreferenceManager.setDefaultValues(PreferenceManager.java:485)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.PreferenceManager.setDefaultValues(PreferenceManager.java:444)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at com.google.zxing.client.android.CaptureActivity.onCreate(CaptureActivity.java:145)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.Activity.performCreate(Activity.java:5248)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2162)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    ... 11 more
    12-26 18:49:51.387: E/AndroidRuntime(26353): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.preference.paths" on path: DexPathList[[zip file "/data/app/com.arrisi.selfinstall-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.arrisi.selfinstall-1, /vendor/lib, /system/lib]]
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.createItem(GenericInflater.java:375)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.onCreateItem(GenericInflater.java:417)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:428)
    12-26 18:49:51.387: E/AndroidRuntime(26353):    ... 21 more

下面的

是调用intent来调用zxing代码时崩溃的代码段。

    Intent intent = new Intent("com.google.zxing.client.android.SCAN"); 
    intent.putExtra("com.google.zxing.client.android.SCAN.SCAN_MODE", "QR_CODE_MODE"); 
    startActivityForResult(intent, 0);

Answer 1

错误信息非常清楚。您在com.google.zxing.client.android.CaptureActivity的布局XML文件中引用了一个名为android.preference.paths的类，该类不存在。

Answer 2

如果您希望用户在您的应用中使用条形码扫描器时不希望用户从Play商店下载条形码阅读器应用程序，那么最简单和最佳的解决方案是将zxing构建为库并在您自己的项目中使用该库。下面是链接，我跟着它，它现在正在工作。

https://damianflannery.wordpress.com/2011/06/13/integrate-zxing-barcode-scanner-into-your-android-app-natively-using-eclipse/

膨胀类路径时出错 - 在我自己的项目中运行zxing进行条形码扫描时

2 个答案: