Field Injection (ARCH8200)

Key kotlin.quality.field-injection · Severity warning · Category quality

Flags @Autowired / @Inject on properties (lateinit var) instead of constructor parameters. Android entry points - Application, Activity, Fragment, Service, Worker - are excepted: the framework constructs them and constructor injection is impossible.

Incorrect

@Autowired lateinit var repo: OrderRepository

Correct

class OrderService(private val repo: OrderRepository)

Fix

Inject through the constructor.