Eclipse, Midlet -> Invalid application

[akumiorava]

I have ran into problems when I'm trying to run my MIDlet in Nokia 6131 NFC phone. After installation, my MIDlet has a red cross over its icon in the phone. When I try to start MIDlet, the phone says “Invalid application. Delete?”


I’m using Eclipse 3.2 and Nokia_6131_NFC_SDK_1_1 and my MIDlet runs fine in Nokia emulator. If I install Nokia's test programs to my phone, they all work fine.

Perhaps the problem occurs during Eclipse Export.

My jad file looks like this:
MIDlet-Version: 1.0.0
MIDlet-Vendor: Me
MIDlet-Jar-URL: MyMidlet.jar
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-2.0
MIDlet-1: MyMIDlet,,midlet.MyMIDlet
MIDlet-Name: MyMidlet
MIDlet-Jar-Size: 35566


Can anybody tell me, how I should Export jar file to run the Midlet in Nokia NFC phone?

What is the difference between jad / manifest files? During Export, there is no Main class (application entry point).

Thanks!

[hartti]

Do you transfer the JAR file or only JAD file (or both of them)? The JAR contains the code...
What is your MIDlet trying to do? Does it try to access anything which requires signing?

There are many differences between JAD and manifest even though they contain partially same information. The role of JAD is to be a small "descriptive" file about the application, in order to let the user and phone know if the application is worthwhile to be downloaded on the phone (too big, does it work, etc). Also the signing information is stored in the JAD (not in the manifest, which is inside the JAR)

Read some more information from the MIDP spec, for example from here
http://java.sun.com/javame/reference...e-summary.html

Hartti

[akumiorava]

Hello,

I transfer jar file only.
Midlet reads RFID tags, and stores them into phone memory. Does these tasks need signing?

Thanks!

[hartti]

I do not think this is signing related...

What are the contents of manifest file (inside the JAR)?

Hartti

[yusuf_kasidit]

I don't know if this is related or not, but I remember that I found this problem once on a S40 phone (although the same JAR worked on S60 phones) - the solution I found was setting my IDE (netbeans 5.5) to not obsfuscate the JAR - it solved the problem for me.

[akumiorava]

Hello,

Manifest file:

Manifest-Version: 1.0
MIDlet-Name: MyMidlet
MIDlet-Version: 1.0.0
MIDlet-Vendor: unknown
MIDlet-1: MyMIDlet, , midlet.MyMIDlet
MicroEdition-Profile: MIDP-2.0
MicroEdition-Configuration: CLDC-1.1

I just noticed that CLDC has difference and Vendor is "unknown".

Could these be the problem?


Thanks

[hartti]

the MIDlet-Vendor attribute exists, and is enough.

Does the jar include the midlet.MyMIDlet class?

Hartti

[akumiorava]

Hello,

Now, after many tries, I found out that the problem is differences between jad and manifest files.
If I delete jad file away, midlet installs to phone ok. But after start it says /ClassNotFoundException/... .
If I have jad file in directory after start it says /VerifyError:midlet/....

So problem must be in jad/manifest.

Thanks.

[akumiorava]

Hello,

Problem solved.

I install (again) EclipseMe, then I convert my project to MIDP project (right click project / J2ME).

After this, I simply Create Package (right click project/J2ME/Create package) -> Install to phone - > it works!

Thanks to all for help!

Now, it is time to start testing...

[akumiorava]

Hello again,

It works fine, once.

Now, Nokia emulator does not work. It complains "WARNING: JAD file doesn't define required attribute MIDlet-Name".
I can not add attributes because emulator creates new folder on each run.

Also, if I make an new Package (J2ME tool) it does not work in phone.
J2ME tool creates \deployed folder where jar and jad file are created.
Jad file has only one row, jar size. Manifest is missing.
If I add new rows to jad file, it will reset back every time when J2ME does something to it.

I totally confused whit this.

Can someone tell me how this must be done?

Thanks!

[szleventee]

I've had similar problems. Try setting the version number to 1.0 in my case the version number was the problem

[simonerod13]

Hi!
I've a similar problem to, I've tried to follow the advices of this forum but nothing seems to work:
I created a j2me program which works fine on nokia emulator, then I'me able to install it on my phone (nokia 6131 nfc) after exporting form eclipse the jar file, but when I try to run it I get: "invalid application"?
Does anyone have any clue of the reason of this?
Thanks...

[grahamhughes]

Did you read this?

Check that you have a MIDlet-1 attribute in your MANIFEST.

If that document doesn't help, please post your JAD (if you're installing one) and the JAR's MANIFEST.

Graham.

[simonerod13]

Thankyou for your help.
I tried with a very simple hello world programm and I did the checking explained in the link you posted me, it seems everything ok to me but when I try to run the jar in the phone I get the same error: "invalid application".
Here my jar's manifest:

Manifest-Version: 1.0
MIDlet-Vendor: Midlet Suite Vendor
MIDlet-Version: 1.0.0
MicroEdition-Configuration: CLDC-1.1
MIDlet-Name: prova9 Midlet Suite
MicroEdition-Profile: MIDP-2.0

[g3r0]

On some phones it might be a problem having a space or something like that at the end of the attribute name. And just to exclude that problem. You build on a windows machine right? Because on some linux machines there seems to be a problem with the character encoding and than it fails too.