CODEWITHSUNDEEP
androidkotlin
J_Strauton
J_Strauton

Reputation: 2418

How to change implementation at runtime

I have a few classes that from my client code I need to call. Right now I have a list and then the client has to check the list for the implementation. It is a mess to use.

object Adapter {
    val list = listOf(
        A(),
        B()
        ...
    )
}

Ideally I would only keep one implementation in memory, but sometimes I need to change between implementations.

Upvotes: 2

Views: 486

Answers (1)

axwcode
axwcode

Reputation: 7824

Make all your classes implement an interface. Since they all implement the same interface you can then assign the concrete instances to the same variable.

 interface IWorker {
     fun doWork()
 }

Then in the Adapter class you can set which implementation you want to use.

object Adapter {
    var worker: IWorker = Default()
}

Default represents any of your classes.

class Default: IWorker {
    override fun doWork() {}
}

Upvotes: 2

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