[GD-General] Last-second snag with J2ME midlet on T720 phone...

[Colin F. <cp...@ea...>]

2002 December 11th
Wednesday

I hate to ask this question here, but I'm like
THIS close to getting my own application to run
on my T720 phone, and this last obstacle is way
more mysterious than I can handle!

I wrote a simple *.java file that uses J2ME.
It compiled to a *.class file, went through
a "preverify" step to become a new *.class
file, and then I put it in to a *.jar file.

I can use the midp application to run the
midlet directly from the *.jar file, and
it executes in a cell phone emulator as
expected.

I have downloaded and executed apps on my
T720 phone, but after downloading my own
app, the phone says "Download Complete",
and then says "2268 bytes transferred",
and then, after a long pause, the
following message appears:

  "Unsupported Content Type"

The *.java code is taken straight from a
extremely simple "Hello, World" demo on
a Sun midlet web site.

Okay, here's what makes all of this weirder:
I did lots of Google searching, and ended
up downloading the Motorola J2ME SDK v3.0,
and I run their phone emulator on that 
same *.jar file -- and it works as expected
on the T720 (my model phone) emulator.

I found many pages (via Google) that contain
the string "Unsupported Content Type", but I
don't see any connection to my problem.

I deployed my app from my WWW site, over
the air (OTA), and the MIME types are 
correct.  I put other people's *.jar and
*.jad files on my WWW site, and I successfully
downloaded these other apps to my phone
and executed them.

Anyone have any idea what might be the 
"missing link"?

We can take it off the list with private
e-mail exchanges if it's too off-topic for
your tastes.  But I've already created a
WWW page that documents in great detail
what I have done so far to get applications
running on my T720 phone -- so it's kind
of frustrating to hit one last snag at 
literally the last possible moment for
something to go wrong!  (By the way,
once someone helps me solve this last
problem, I'll post the entire process
on my WWW site and announce it.)

I don't think my app actually started 
execution because the phone didn't even
store the app in the Games & Apps
repository for future use.

So, was "Unsupported Content Type"
generated by the verification stage
on the phone?  Or is it something even
sillier, like the *.JAR MIME type still
being wrong (despite me specifying:
AddType application/java-archive jar
on the Apache server)?

Or does it have to do with me specifying
the *.jad file directly via the "Open URL"
option on the phone?  Maybe my successful
attempts to get other apps involved going
though HTML or WAP links...

Anyhow, I'm baffled, and I searched the web
and couldn't find any other friendly place
to ask a question like this.  Sorry if this
is way out there for this list.

--- Colin
cp...@ea...