CODEWITHSUNDEEP
androidgenericskotlin
Zar E Ahmer
Zar E Ahmer

Reputation: 34360

Type mismatch found while using Generic in Kotlin

I am converting this code to kotlin

where 

abstract class BaseModel(){
}

BaseViewHolder

abstract class BaseViewHolder<T : BaseModel>(itemView: View) : RecyclerView.ViewHolder(itemView){
    abstract fun bindData(data: T)
}

BaseAdapter

abstract class BaseAdapter<T:BaseModel, U : BaseViewHolder<*>>(var items: List<T>) : RecyclerView.Adapter<U>() {
    override fun onCreateViewHolder(p0: ViewGroup, p1: Int): U {
    }

    override fun getItemCount(): Int {
        return items.size
    }

    override fun onBindViewHolder(holder: U, pos: Int) {
        holder.bindData(items.get(pos))
    }
}

In onBindViewHolder the method holder.bindData gives an error type mismatch require Nothing found T

What am I doing wrong??

Upvotes: 2

Views: 1030

Answers (1)

Hanzala
Hanzala

Reputation: 1983

Change your BaseViewHolder<*> from * to T

Just like this

...BaseAdapter<T:BaseModel, U : BaseViewHolder<T>>...

Upvotes: 1

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