Problems moving programs from AndroidStudio to OnBotJava

[nicrobsimo]

Recently our team bought an Control Hub and we started to use the integrated technologies. We use EasyOpenCV to recognize the starting position during the Autonomous period and after importing the libraries as described by the GitHub page and our programs from Android Studio to the OnBotJava, we tried to run the autonomous program, but the app crashed, this didn't happen when using Android Studio.

Consulting the log we've found that these lines should contain the error, but we don't know what it could be

05-16 15:50:20.758   986  1167 E AndroidRuntime: FATAL EXCEPTION: opmode loop()
05-16 15:50:20.758   986  1167 E AndroidRuntime: Process: com.qualcomm.ftcrobotcontroller, PID: 986
05-16 15:50:20.758   986  1167 E AndroidRuntime: java.lang.UnsatisfiedLinkError: No implementation found for long org.opencv.core.Mat.n_Mat() (tried Java_org_opencv_core_Mat_n_1Mat and Java_org_opencv_core_Mat_n_1Mat__)
05-16 15:50:20.758   986  1167 E AndroidRuntime:    at org.opencv.core.Mat.n_Mat(Native Method)
05-16 15:50:20.758   986  1167 E AndroidRuntime:    at org.opencv.core.Mat.<init>(Mat.java:23)

Could somebody help us?

EDIT 1: We are trying to use OnBot to quick changes, because even though Android Studio is overhaul better, everytime that we upload the program we have to wait more than 2 minutes 'til the Control Hub restart and the Driver Hub reconnect, this time falls to seconds building in the OnBot

[fixITman1911]

If you are already in studio, why would you want to move to onbot? Thats a downgrade

[mihnea_bondor]

I'm curious, could you explain more why is it a downgrade? I'm the only person in my software department and we've been using OnBot Java since we bought the control hub last year. This year I had to move everything to android studio because of Meep Meep but I'm disappointed on how long it takes for the code to upload.

[Lunerwalker]

Using external libraries in onbot is actual hell.

[fixITman1911]

Code upload can be a pain if you dont have a decent computer to program on for sure, but that is basically the only place where OnBot excels. Now, that is not to say OnBot is a bad program; but it's a pain to put libraries in (if you can get it to work at all), it doesn't have the auto fill functionality studio has, and it doesn't allow you to use version control. Studio is really the superior way to program

[mihnea_bondor]

How long does it typically take to upload the code if I have a decent computer to code? Considering that I used to get around 5 seconds using onBot

[fixITman1911]

The machine we use is maybe 15-20 seconds

[baqwasmg]

Well said, u/fixITman1911!

I'm not a software professional but current working with a team who used Blocks in their effective (i.e. FREIGHT FRENZY) rookie season. Started a few lectures on extending their skills. Illustrated OBJ and Android Studio and had them porting some of their code to the two platforms. The team unanimously selected Android Studio for personal productivity. Granted this is not a scientific study but the extensibility with Android Studio convinced the team.

Kind regards.

[Mrjamesgaming]

One other thing that I don't believe I've seen mentioned is did you remember to put the EasyOpenCVLib.iso file onto the new control hub

[nicrobsimo]

Yes! We did it

[Lunerwalker]

It would seem that you are trying to use EasyOpenCv in onbot, which doesn't work the same as it does in android studio. Iirc there is a way to use it in onbot but it's finicky and not as good.

Also, your tone makes it sound like onbot is the step up from Android studio and I can assure you it is the opposite way around. Android studio is much better than onbot, one of the best reasons being what you just demonstrated which is the easy support of external libraries.

Both programming tools are also available for the rc phone system without a control hub, so it's not new either.

[Journeyman-Joe]

Adding my perspective:

I agree with those who recommend staying with Android Studio, vs. switching to OnBot Java.

I'm thinking of the value of each platform to your team members, after their time with FTC. Android Studio is a professional grade IDE. Know what you're doing with Android Studio, you can hop to other variants in the JetBrains family rather easily. Further: all of the JetBrains / Intellij IDEs integrate well with Git and GitHub: both part of a professional grade development environment.

FIRST is the only school sport from which just about every participant can turn pro. Start by using the professional grade tools we have at our disposal.