base fragment,activity 예시

package com.spark.android.ui.base

import android.os.Bundle
import androidx.annotation.LayoutRes
import androidx.appcompat.app.AppCompatActivity
import androidx.databinding.DataBindingUtil
import androidx.databinding.ViewDataBinding

abstract class BaseActivity<T : ViewDataBinding>(
    @LayoutRes private val layoutRes: Int
) : AppCompatActivity() {
    protected lateinit var binding: T

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this,layoutRes)
        binding.lifecycleOwner = this
    }
}

액티비티

package com.spark.android.ui.base

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.annotation.LayoutRes
import androidx.databinding.DataBindingUtil
import androidx.databinding.ViewDataBinding
import androidx.fragment.app.Fragment

abstract class BaseFragment<T : ViewDataBinding>(
    @LayoutRes private val layoutRes: Int
) : Fragment() {
    private var _binding: T? = null
    protected val binding: T
        get() = requireNotNull(_binding)

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        _binding = DataBindingUtil.inflate(inflater, layoutRes, container, false)
        binding.lifecycleOwner = viewLifecycleOwner
        return binding.root
    }

    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
}

프래그먼트