Type mismatch. Required: Context Found: In Fragment

Issue

In my SearchFragment.kt I have:

private lateinit var userDb: FirebaseFirestore
private lateinit var users: MutableList<User>
private lateinit var adapter: UsersAdapters

fun getUsers() {
    users = mutableListOf()
    adapter = UsersAdapters(this, users)

    userDb = FirebaseFirestore.getInstance()
    val userReference = userDb.collection("users")
    userReference.addSnapshotListener { snapshot, exception ->
        if (exception != null || snapshot == null) {
            Log.i("TAG", "Somethings Wrong", exception)
            return@addSnapshotListener
        }
        val userList = snapshot.toObjects(User::class.java)
        for (user in userList) {
            Log.i("TAG", "Document ${user.username}")
        }
    }
}

Which gets called in in onViewCreated

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    getUsers()
}

My UserAdapter.kt look like:

package com.example.myapp

import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import com.bumptech.glide.Glide
import kotlinx.android.synthetic.main.item_user.view.*

import com.example.myapp.models.User


class UsersAdapters (val context: Context, val users: List<User>) :
    RecyclerView.Adapter<UsersAdapters.ViewHolder>() {

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
    val view = LayoutInflater.from(context).inflate(R.layout.item_user, parent, false)
    return ViewHolder(view)
}

override fun getItemCount() = users.size

override fun onBindViewHolder(holder: ViewHolder, position: Int) {
    holder.bind(users[position])
}

inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
    fun bind(user: User) {
        itemView.etUsername.text = user?.username
        Glide.with(context).load(user.profileURL).into(itemView.profileImage)
    }
}
}

In SearchFragment.kt on the following line:

adapter = UsersAdapters(this, users)

Im getting the following error:

Type mismatch.
Required:
Context
Found:
SearchFragment

Solution

Try this:

adapter = UsersAdapters(requireActivity(), users)

Answered By - MidasLefko