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Editorial Team
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Asked: 2026-06-08T01:57:16+00:00

We have an ANT build process that builds all of our android projects at

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We have an ANT build process that builds all of our android projects at once. It is completely based on the build process encouraged by android.

We switched to ADT20 and the build process now fails when we are building a release. The android build process fails when trying to handle “Ordered Dependencies” during the -build-setup.

We sign our release applications with an ant.properties file that contains the key.store, key.alias, key.store.password and key.alias.password.

It fails with the following error:

C:\PATH\android-sdks\tools\ant\build.xml:546: java.lang.NullPointerException

That is all it says without the -debug flag.

With the -debug flag i am getting this:

C:\PATH\android-sdks\tools\ant\build.xml:546: java.lang.NullPointerException
    at org.apache.tools.ant.taskdefs.Exit.execute(Exit.java:164)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
    at net.sf.antcontrib.logic.TryCatchTask$CatchBlock.execute(TryCatchTask.java:137)
    at net.sf.antcontrib.logic.TryCatchTask.execute(TryCatchTask.java:225)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:390)
    at org.apache.tools.ant.Target.performTasks(Target.java:411)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
    at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
    at org.apache.tools.ant.Main.runBuild(Main.java:809)
    at org.apache.tools.ant.Main.startAnt(Main.java:217)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
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1 Answer

  1. Editorial Team

    To solve this issue i put the properties in a specific order:

    key.store

    key.alias

    key.store.password

    key.alias.password

    And i took out all extra white space at the bottom of the ant.properties file.

    This was working fine in the older versions of ADT. Not sure what changed to make it fail.
    But re-ordering the properties and removing the white spaces fixed the problem.

    I hope this helps someone else in the future, because i spent 10 hours trying to track
    this issue down. It would have helped if there were better error details from ANT.

    I used this little bit of ANT code to make sure white space was gone.

        <replaceregexp
        file="${dirName}/../ant.properties"
        match="\s*"
        replace=""
        byline="true">
    </replaceregexp>
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