Android 应用程序无法启动 noClassDefFoundError

Question

我正在为 android 创建一个 gps 应用程序!现在我偶然发现了一个问题。该应用程序根本无法启动...关于如何解决此问题的任何想法？

04-05 12:54:50.877: D/dalvikvm(540): Not late-enabling CheckJNI (already on)
04-05 12:54:51.018: I/dalvikvm(540): Turning on JNI app bug workarounds for target SDK version 5...
04-05 12:54:51.417: I/dalvikvm(540): Could not find method org.acra.ACRA.init, referenced from method com.kulplex.gaia.GaiaApp.onCreate
04-05 12:54:51.417: W/dalvikvm(540): VFY: unable to resolve static method 652: Lorg/acra/ACRA;.init (Landroid/app/Application;)V
04-05 12:54:51.417: D/dalvikvm(540): VFY: replacing opcode 0x71 at 0x0000
04-05 12:54:51.457: D/AndroidRuntime(540): Shutting down VM
04-05 12:54:51.457: W/dalvikvm(540): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
04-05 12:54:51.477: E/AndroidRuntime(540): FATAL EXCEPTION: main
04-05 12:54:51.477: E/AndroidRuntime(540): java.lang.NoClassDefFoundError: org.acra.ACRA
04-05 12:54:51.477: E/AndroidRuntime(540):  at com.kulplex.gaia.GaiaApp.onCreate(GaiaApp.java:54)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:969)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3954)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.app.ActivityThread.access$1300(ActivityThread.java:123)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1185)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.os.Looper.loop(Looper.java:137)
04-05 12:54:51.477: E/AndroidRuntime(540):  at android.app.ActivityThread.main(ActivityThread.java:4424)
04-05 12:54:51.477: E/AndroidRuntime(540):  at java.lang.reflect.Method.invokeNative(Native Method)
04-05 12:54:51.477: E/AndroidRuntime(540):  at java.lang.reflect.Method.invoke(Method.java:511)
04-05 12:54:51.477: E/AndroidRuntime(540):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-05 12:54:51.477: E/AndroidRuntime(540):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-05 12:54:51.477: E/AndroidRuntime(540):  at dalvik.system.NativeStart.main(Native Method)

Answer 1

更新到最新的 Android 工具后，我遇到了同样的问题。

在项目属性、Java Build Path、Order 和 Export 部分，我必须确保选中了 Android Private Libraries。

然后我不得不清理项目。之后它似乎工作了。

It was indeed an issue with 'Order and Export' of the Java Build Path.

When upgrading, the 'Order and Export' of the new 'Android Private Libraries' is not always checked. And the android-support-v4.jar is now in this 'Android Private Libraries' section.

To fix this, go to 'Order and Export' and check 'Android Private Libraries'. Then refresh/clean/rebuild.

After you done this 'fix' for a library project, you may need to just close and re-open any depending project, because they may not see this 'fix' immediately.

我找到了答案 here .