Apps Conversion to Dalvik format, error 1, blah blah...one cause/solution found!

[GTbrewer]

Sorry for the repost on this (I posted this same info at the end of
another thread), but IMHO, this seems like a common-enough problem that I
would really like to make sure this one cause/solution is seen by anyone
looking for it.

B Lyon, in the developers forum, deserves a billion thanks for a
tremendous amount of assistance (first on the developers forum, then via
direct e-mail....we had e-mails flying back and forth like crazy late
last night and early this morning). Anyways, something from our
conversations last night, that I didn't really process until a little
while ago, hit me (like a lead brick).

Ultimately, the problem traced back to a set of error messages indicating
a few redundant classes in jtwitter.jar and android.jar. The were all
under org/json (sound familiar?). I tried removing that part from
jtwitter.jar, but of course, that only made things worse. Then, as I
said, it hit me just a little while ago.

I got out of Eclipse, opened up the .classpath file in vim, and saw what
I hadn't really processed in my brain last night: jtwitter.jar was being
loaded prior to android.jar (Eclipse did that, not me). Anyways, I
reversed the two lines so android.jar was being loaded first, re-started
Eclipse, and dd a "Build All". It built. ZERO errors.

Now I just need to remember (or more like, try all three until I find the
right one) which build method produces an SDK (or is that APK? whatever....)
file. I already know that the Build All didn't, but I seem to recall that it
didn't for the Hello Android app, either. Whatever. It'll take a minute or less
to find that, so no worries there.

So if you're seeing the error about the Conversion to Dalvik format
failing with error 1, check your .classpath file, and your error
messages, and look for dupes, or just something else loading before
android.jar, and you might just have your solution right there.

Hope this helps.....

Later,
--jim

PS: And this time, I got it right...a new thread, instead of a new reply.
As always, blame it on chemobrain, and 99^ of the time, it's true. Sigh....

 

[GTbrewer]

And then, on the second build, a NEW error decided to annoy the **** out of me....

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[2011-05-12 13:36:14 - Yamba] Dx
trouble processing "java/nio/CharBuffer.class":

Ill-advised or mistaken usage of a core class (java.* or javax.*)
when not building a core library.

This is often due to inadvertently including a core library file
in your application's project, when using an IDE (such as
Eclipse). If you are sure you're not intentionally defining a
core class, then this is the most likely explanation of what's
going on.

However, you might actually be trying to define a class in a core
namespace, the source of which you may have taken, for example,
from a non-Android virtual machine project. This will most
assuredly not work. At a minimum, it jeopardizes the
compatibility of your app with future versions of the platform.
It is also often of questionable legality.

If you really intend to build a core library -- which is only
appropriate as part of creating a full virtual machine
distribution, as opposed to compiling an application -- then use
the "--core-library" option to suppress this error message.

If you go ahead and use "--core-library" but are in fact
building an application, then be forewarned that your application
will still fail to build or run, at some point. Please be
prepared for angry customers who find, for example, that your
application ceases to function once they upgrade their operating
system. You will be to blame for this problem.

If you are legitimately using some code that happens to be in a
core package, then the easiest safe alternative you have is to
repackage that code. That is, move the classes in question into
your own package namespace. This means that they will never be in
conflict with core system classes. JarJar is a tool that may help
you in this endeavor. If you find that you cannot do this, then
that is an indication that the path you are on will ultimately
lead to pain, suffering, grief, and lamentation.

[2011-05-12 13:36:14 - Yamba] Dx 1 error; aborting
[2011-05-12 13:36:15 - Yamba] Conversion to Dalvik format failed with error 1

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AAARRRRGGGGHHHHHH!!!!!!!!!