id项目引用一个Android库抛出NoClassDefFoun

id项目引用一个Android库抛出NoClassDefFoun

本文介绍了Java库在通过Android项目引用一个Android库抛出NoClassDefFound的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个Android库项目(我写的,我有来源),我在我的Andr​​oid项目使用 - 到目前为止好,没有问题。但在该库项目,我引用一个国外的.jar文件(SDK为BIXOLON便携式打印机),并建立正常,我可以在我的code参考SDK中的方法。然而,在运行时我得到这样的:

I have an Android library project (written by me and I have the sources) which I use in my Android project - so far so good and no problems. But in that library project I am referencing a foreign .jar file (the SDK for the Bixolon Mobile Printer) and it builds fine and I can reference the SDK's method in my code. However at runtime I get this:

   02-16 09:44:43.620: W/dalvikvm(25402): VFY: unable to resolve virtual method 2433: Lcom/bixolon/android/library/BxlService;.GetStatus ()I
    02-16 09:44:43.625: W/dalvikvm(25402): VFY: unable to resolve virtual method 2433: Lcom/bixolon/android/library/BxlService;.GetStatus ()I
    02-16 09:44:43.625: W/dalvikvm(25402): VFY: unable to resolve virtual method 2436: Lcom/bixolon/android/library/BxlService;.MarkFeed (I)I
    02-16 09:44:43.625: W/dalvikvm(25402): VFY: unable to resolve virtual method 2428: Lcom/bixolon/android/library/BxlService;.Directio ([BI[B[I)I
    02-16 09:44:43.630: W/dalvikvm(25402): VFY: unable to resolve virtual method 2437: Lcom/bixolon/android/library/BxlService;.PrintImage (Ljava/lang/String;III)I
    02-16 09:44:43.630: W/dalvikvm(25402): VFY: unable to resolve virtual method 2433: Lcom/bixolon/android/library/BxlService;.GetStatus ()I
    02-16 09:44:43.630: W/dalvikvm(25402): VFY: unable to resolve virtual method 2433: Lcom/bixolon/android/library/BxlService;.GetStatus ()I
    02-16 09:44:43.630: W/dalvikvm(25402): VFY: unable to resolve virtual method 2433: Lcom/bixolon/android/library/BxlService;.GetStatus ()I
    02-16 09:44:43.790: W/dalvikvm(25402): threadid=1: thread exiting with uncaught exception (group=0x4001e578)
    02-16 09:44:43.795: E/AndroidRuntime(25402): FATAL EXCEPTION: main
    02-16 09:44:43.795: E/AndroidRuntime(25402): java.lang.NoClassDefFoundError: com.bixolon.android.library.BxlService
    02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.core.bluetooth.printer.bixolon.BixolonPrinter.connectToPrinter(BixolonPrinter.java:71)
    02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.core.bluetooth.printer.PrintManager.findPrinter(PrintManager.java:101)
    02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.core.bluetooth.printer.PrintManager.getPrinter(PrintManager.java:77)

02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.core.bluetooth.printer.PrintManager.printTestReceipt(PrintManager.java:53)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileoffences.ui.Printer$1.execute(Printer.java:40)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.ui.Dialog.executeActions(Dialog.java:271)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.ui.widgets.DynamicWidget.executeActions(DynamicWidget.java:152)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.ui.widgets.DynamicWidget.executeActions(DynamicWidget.java:138)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at de.softcon.mobileapp.framework.ui.widgets.Button$1.onClick(Button.java:67)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at android.view.View.performClick(View.java:2538)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at android.view.View$PerformClick.run(View.java:9152)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at android.os.Handler.handleCallback(Handler.java:587)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at android.os.Handler.dispatchMessage(Handler.java:92)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at android.os.Looper.loop(Looper.java:130)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at android.app.ActivityThread.main(ActivityThread.java:3691)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at java.lang.reflect.Method.invokeNative(Native Method)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at java.lang.reflect.Method.invoke(Method.java:507)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
02-16 09:44:43.795: E/AndroidRuntime(25402):    at dalvik.system.NativeStart.main(Native Method)

这使我不知道,如果该.jar我引用在我的Andr​​oid库项目被正确部署......我从BIXOLON的样本项目,该项目包括直接的.jar文件(同样,我引用在我的Andr​​oid库项目),并能正常工作。我已经确信的是我自己的Andr​​oid项目,我的Andr​​oid库项目相同的(因为它是由BIXOLON提供的样本项目中定义)。所以,我有点在现在以这个问题可能是一个损失。不幸的是我没有这方面的参考BIXOLON SDK的.jar的源文件 - 只需将.jar

Which makes me wonder, if the .jar I am referencing in my Android Library project gets deployed correctly... I have a sample Project from Bixolon which directly includes their .jar file (same that I am referencing in my Android Library project) and it works fine. I already made sure the is the same in my own Android Project AND my Android Library Project (as it is defined in the sample Project provided by Bixolon). So I am a bit at a loss now as to what the problem could be. Unfortunately I don't have the source files of that referenced Bixolon SDK .jar - just the .jar.

推荐答案

查看官方开发指南的:

库项目可以包括JAR库
  你可以开发一个库项目,本身包括JAR库,但您需要手动编辑相关的应用程序项目的构建路径,添加的路径JAR文件。

除了库项目,则需要手动将jar添加到您的主项目的构建路径为好,希望这种帮助。

Besides the library project, you need manually add the jar to your main project build path as well, hope this help.

从SDK R17更新:

这是自动ADT处理现在,检查出新功能的ADT 17.0.0版本的:

This is automatically handled by ADT now, check out new feature for ADT 17.0.0 release here:

新增功能自动安装JAR依赖。在/ libs文件夹中所有.jar文件添加到构建配置(类似于Ant构建系统的工作原理)。此外,需要的库项目.jar文件也会被自动添加到依赖这些库项目的项目。 (更多信息

这篇关于Java库在通过Android项目引用一个Android库抛出NoClassDefFound的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

07-29 16:55