21.0.1 android sdk 上的 Android 预编译器错误

Question

我在另一台电脑上查看了旧的 android 项目，我得到了一个Android Pre Compiler Null 指针异常错误，每次保存时都无法生成 R.java。该项目是使用其他库的库项目。

项目不起作用的新系统是:64位的Ubuntu，ADT eclipse ，安卓 SDK 工具 21.0.1,Android sdk 平台工具 16错误是:

!ENTRY org.eclipse.core.resources 4 2 2013-01-07 02:07:15.177 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources". !STACK 0 java.lang.NullPointerException at com.android.ide.eclipse.adt.internal.build.builders.PreCompilerBuilder.build(PreCompilerBuilder.java:673) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

!ENTRY org.eclipse.core.resources 4 75 2013-01-07 02:07:15.717 !MESSAGE Errors occurred during the build. !SUBENTRY 1 com.android.ide.eclipse.adt 4 75 2013-01-07 02:07:15.717 !MESSAGE Errors running builder 'Android Pre Compiler' on project 'MyProject'. !STACK 0 java.lang.NullPointerException at com.android.ide.eclipse.adt.internal.build.builders.PreCompilerBuilder.build(PreCompilerBuilder.java:673) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

该项目在旧系统上运行:

旧系统是:32位的Ubuntu，4.2.1 eclipse 朱诺，安卓sdk工具21，

Git 被用作版本控制系统。这是一个非常奇怪的问题，我检查了所有的 xml，用 lint 运行它们以找到 xml 构建问题，但每次保存都没有运气，我有同样的错误，并且没有生成 R.java。谢谢

Answer 1

21.0.1 中的 Android 预编译器似乎严重损坏，在 .svn 目录和 .DS_Store 文件以及没有文件扩展名的文件上崩溃。

对我有用的解决方案是按照以下步骤升级到 21.1 rc1:
1. 按照此处的说明进行操作:http://tools.android.com/preview-channel
2. 确保更新 SDK Manager 和 ADT
3.重启Eclipse

查看此错误以获取更多信息: http://code.google.com/p/android/issues/detail?id=42051