taskdef class com.android.ant.SetupTask cannot be found using the classloader AntClassLoader[]

Question

I'm trying to get some simple Android apps working from the book 'Beginning Android 4'. I ran ant on one of the source code directories and received this error:

# ant debug
Buildfile: NowRedux/build.xml

BUILD FAILED
NowRedux/build.xml:49: taskdef class com.android.ant.SetupTask cannot be found using the classloader AntClassLoader[]

The lines in build.xml which is causing this are:

<taskdef name="setup"
    classname="com.android.ant.SetupTask"
    classpathref="android.antlibs" />

Does anyone know how I can resolve this? I tried downloading ant at http://ant.apache.org/ and manually installing it, but that did not help. Any ideas?

Answer 1

I'm not sure if this was the correct way to solve the problem, or it merely sidesteps it, but I did this

rm MyProjects/NowRedux/build.xml
android update project --target 8 --path MyProjects/NowRedux

And it worked. It basically creates a new build.xml file that doesn't refer to com.android.ant.SetupTask (so, that problem might still be broken, but at least I found a workaround)