フラグメントからアクティビティ移動

HomeFragment.kt

package com.dntf.class_omitter.ui.home

import android.content.Context
import android.content.Intent
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import android.widget.TextView
import androidx.fragment.app.Fragment
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.Observer
import androidx.lifecycle.ViewModel
import androidx.lifecycle.ViewModelProvider
import com.dntf.class_omitter.R
import com.dntf.class_omitter.ui.chemis1

class HomeFragment : Fragment() {

    private lateinit var homeViewModel: HomeViewModel

    override fun onCreateView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            savedInstanceState: Bundle?
    ): View? {
        homeViewModel =
                ViewModelProvider(this).get(HomeViewModel::class.java)
        val root = inflater.inflate(R.layout.fragment_home, container, false)
        val textView: TextView = root.findViewById(R.id.text_home)
        homeViewModel.text.observe(viewLifecycleOwner, Observer {
            textView.text = it
        })
        return root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val btn1 : Button = view.findViewById(R.id.button)
        val c = context

        btn1.setOnClickListener {
            if (c != null) {
                chemis1(c)
            }
        }
    }

    private fun chemis1(context: Context){
        val intent = Intent(context,chemis1::class.java)
        startActivity(intent)
    }

}