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我有一个使用 ZXing 库的应用程序。Java 编译器设置为某个级别，我不记得是什么，抱歉。我尝试使用 switch 语句并且 eclipse 抱怨编译器级别不正确。我点击了快速修复，现在 Eclipse 给出了以下错误。

11-21 16:38:56.090: E/AndroidRuntime(20001): FATAL EXCEPTION: main
11-21 16:38:56.090: E/AndroidRuntime(20001): java.lang.RuntimeException: Unable to instantiate application com.carefreegroup.NfcScannerApplication: java.lang.ClassNotFoundException: com.carefreegroup.NfcScannerApplication
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.LoadedApk.makeApplication(LoadedApk.java:529)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4532)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.ActivityThread.access$1300(ActivityThread.java:139)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.os.Handler.dispatchMessage(Handler.java:99)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.os.Looper.loop(Looper.java:156)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.ActivityThread.main(ActivityThread.java:5045)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at java.lang.reflect.Method.invokeNative(Native Method)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at java.lang.reflect.Method.invoke(Method.java:511)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at dalvik.system.NativeStart.main(Native Method)
11-21 16:38:56.090: E/AndroidRuntime(20001): Caused by: java.lang.ClassNotFoundException: com.carefreegroup.NfcScannerApplication
11-21 16:38:56.090: E/AndroidRuntime(20001):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.Instrumentation.newApplication(Instrumentation.java:948)
11-21 16:38:56.090: E/AndroidRuntime(20001):    at android.app.LoadedApk.makeApplication(LoadedApk.java:520)
11-21 16:38:56.090: E/AndroidRuntime(20001):    ... 11 more

我的应用程序称为 nfcscannerappliction，我似乎得到了 ClassNotFoundException。任何想法如何让我的应用程序再次编译？

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1 回答 1

0

[解决了]

我必须进入构建路径并单击 java 编译器按钮，将编译器合规级别设置回 1.6。该项目必须重新构建并且现在运行良好。

谢谢

于 2012-11-22T10:54:00.500 回答