getService return null

Answered

Created September 07, 2021 13:37

I register the service when the project (Activity) is launched:

class MyTestStarupActivity : StartupActivity, StartupActivity.DumbAware {

    override fun runActivity(project: Project) {
        project.registerServiceInstance(MyTestService::class.java, MyTestService())
    }
}

Then I try to get this service in CompletionContributor and get null:

class MyTestCompletionContributor : CompletionContributor() {

    override fun fillCompletionVariants(parameters: CompletionParameters, result: CompletionResultSet) {
        val service = parameters.editor.project?.getService(MyTestService::class.java)

        Notifications.Bus.notify(
                Notification(
                    Notifications.SYSTEM_MESSAGES_GROUP_ID,
                    "DEBUGGER",
                    "service: $service",
                    NotificationType.WARNING)
        )
        super.fillCompletionVariants(parameters, result)
    }
}

Why is this happening, what am I doing wrong?

4 comments

Yann Cebron

Created September 07, 2021 13:55

Please use regular ways of registering Service as described here https://plugins.jetbrains.com/docs/intellij/plugin-services.html

Lojka10

Created September 08, 2021 01:28

I deleted my service from plugin.xml and added the @Service annotation to it. I also deleted the service registration using "registerServiceInstance". But I still get null when I want to get a service.

class MyTestStarupActivity : StartupActivity, StartupActivity.DumbAware {

    override fun runActivity(project: Project) {
        // There used to be a service registration here.
    }
}

class MyTestCompletionContributor : CompletionContributor() {

    override fun fillCompletionVariants(parameters: CompletionParameters, result: CompletionResultSet) {
        val service = ApplicationManager.getApplication().getService(MyTestService::class.java)

        Notifications.Bus.notify(
                Notification(
                    Notifications.SYSTEM_MESSAGES_GROUP_ID,
                    "DEBUGGER",
                    "service: $service",
                    NotificationType.WARNING)
        )
        super.fillCompletionVariants(parameters, result)
    }
}

@Service
class MyTestService {}

What could be the problem?

Yann Cebron

Created September 09, 2021 14:45

Please share full project