NoSuchServiceException in tutorial code about services about tutorials HOT 5 CLOSED

I just figured out how to make the tutorial work: If I replace the line

final AnimalService animals = ij.get(AnimalService.class);

with these lines:

Context context = new Context(AnimalService.class);
final AnimalService animals = context.getService(AnimalService.class);

It works. But is it intended to be like that? Is there an alternative of adding a new service to an existing Context?

Thanks!
Robert

from tutorials.

@haesleinhuepf I can reproduce the issue.

It is due to some changes on how the ImageJ gateway works. Prior to imagej/ImageJ@2f1ecc3 new ImageJ() would create a Context with all available services (including AnimalService). Introduced with the mentioned commit, the created Context only contains relevant services.

I think this example could be a good point to introduce custom Contexts. If I am not mistaken, all the other examples use a Context generated by ImageJ. What do you think, @ctrueden?

from tutorials.

We can either write new Context() or else make AnimalService implement ImageJService. I think I prefer the former solution.

from tutorials.

Looking at the tutorial, it is very ImageJ-centric. (Even though it doesn't really do anything with images, and could be repurposed as a SciJava-level service.)

So I'm going to change it to implement ImageJService, and then this problem goes away.

from tutorials.

Thanks a lot guys! :)

from tutorials.