Building Android app with ANT from OSX leads to NullPointerException

Question

I run the following commands (it is a lib project.. but I get this on the regular project too):

android update lib-project -t "android-16" -p whatever_my_project_is
ant clean debug -v -d -f "${WORKSPACE}/whatever_my_project_is/build.xml"

It starts building like normal the various classes in the project, but then BOOM this nullpointerexception occurs during R.java

 /Users/Shared/Jenkins/Home/jobs/Androidyaddayadda 1/workspace/whatever_my_project_is/yadda/yadda/R.java
    [javac] An exception has occurred in the compiler (1.6.0_33). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
    [javac] java.lang.NullPointerException
    [javac]     at com.sun.tools.javac.comp.Check.checkCompatibleConcretes(Check.java:1213)
    [javac]     at com.sun.tools.javac.comp.Check.checkCompatibleSupertypes(Check.java:1565)
    [javac]     at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2674)
    [javac]     at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2628)
    [javac]     at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2584)
    [javac]     at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2564)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1045)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:768)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:730)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:353)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:279)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:270)
    [javac]     at com.sun.tools.javac.Main.compile(Main.java:69)
    [javac]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    [javac]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:56)
    [javac]     at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1134)
    [javac]     at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912)
    [javac]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    [javac]     at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [javac]     at org.apache.tools.ant.Task.perform(Task.java:348)
    [javac]     at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
    [javac]     at com.android.ant.IfElseTask.execute(IfElseTask.java:120)
    [javac]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    [javac]     at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [javac]     at org.apache.tools.ant.Task.perform(Task.java:348)
    [javac]     at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
    [javac]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    [javac]     at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [javac]     at org.apache.tools.ant.Task.perform(Task.java:348)
    [javac]     at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
    [javac]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    [javac]     at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [javac]     at org.apache.tools.ant.Task.perform(Task.java:348)
    [javac]     at org.apache.tools.ant.Target.execute(Target.java:390)
    [javac]     at org.apache.tools.ant.Target.performTasks(Target.java:411)
    [javac]     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
    [javac]     at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
    [javac]     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    [javac]     at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
    [javac]     at org.apache.tools.ant.Main.runBuild(Main.java:809)
    [javac]     at org.apache.tools.ant.Main.startAnt(Main.java:217)
    [javac]     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
    [javac]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)

Does anyone know of a workaround for building Android via Ant using on OSX? I'm using Jenkins.. but the command does the same thing for me via bash.

Thank you

oers oers · Accepted Answer · 2012-08-14T06:47:39

This seems to be a bug in java

According to the Bug report, this should be fixed in Java 1.7, but not in 1.6 or 1.5.

Building Android app with ANT from OSX leads to NullPointerException

1 Answers