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mavlink / MAVSDK-Java

MAVSDK client for Java.
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Cannot build MAVSDK 2.1.0 on Android tablet #171

Closed mfran89 closed 3 months ago

mfran89 commented 3 months ago

Hi ,

For some time I have been using 1.3.1 for mavsdk with out issues. I just saw that there is a 2.1.0 build and I tired to build it but get this error 

slf4j-api-2.0.12.jar
- java.lang.NullPointerException: Cannot invoke "String.length()" because "<parameter1>" is null
mavsdk-2.1.0.jar
- error while dexing

I was wondering if anyone else had this issue ? I am still able to successfully use mavsdk 1.3.1 and mavsdk server 1.3.2.

Thanks Mike

JonasVautherin commented 3 months ago

Are you including mavsdk from Maven? Or building from sources?

mfran89 commented 3 months ago

building it from maven

JonasVautherin commented 3 months ago

Did you try updating your tooling (e.g. gradle)? I see online that this error is sometimes fixed by upgrading the tooling.

mfran89 commented 3 months ago

Currently I am using android gradle plugin version 7.4.2 and gradle 7.6.1 . I tried using both of the latest android gradle plugin 8.0.2 and gradle 8.9 but found that I couldn't even get the project to build. Havent taken a deep dive yet into what version will work best yet.

mfran89 commented 3 months ago

So I set gradle to 8.6.0 and I could only set android gradle plugin to 8.0 my build tool version 30.0.3. I used this based on your recommendation from your last merge for mavsdk 2.1.0 . My build time issue after that was Property 'http://javax.xml.XMLConstants/property/accessExternalSchema' is not recognized. Not sure how to fix that any ideas?

mfran89 commented 3 months ago

Issue resolved , I was using flamingo android ide , and needed to upgrade it to android giraffe latest patch to then use android gradle app 8.1.2 and gradle plugin 8.2 to use mavsdk 2.1.0. Will test using later versions of gradle and android gradle plugin to see how it goes.

julianoes commented 3 months ago

:flamingo: :giraffe: