PhotosActivity.kt

package com.template.androidtemplate.ui.photos.view

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.SearchView
import androidx.activity.viewModels
import androidx.lifecycle.Observer
import androidx.recyclerview.widget.LinearLayoutManager
import com.google.gson.Gson
import com.template.androidtemplate.R
import com.template.androidtemplate.data.model.Photos
import com.template.androidtemplate.ui.photos.adapter.PhotosAdapter
import com.template.androidtemplate.ui.photos.viewmodel.PhotosViewModel
import com.template.androidtemplate.utils.Status
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.android.synthetic.main.activity_photos.*

@AndroidEntryPoint
class PhotosActivity : AppCompatActivity() , SearchView.OnQueryTextListener{
    
    private val photosViewModel: PhotosViewModel by viewModels()
    private lateinit var photosAdapter: PhotosAdapter
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_photos)
        setUpViews()
        doObserveWork()
    }
    
    private fun setUpViews() {
        search_layout.findViewById<SearchView>(R.id.search_view)
            .setOnQueryTextListener(this)
        recycler_view.layoutManager = LinearLayoutManager(this,
            LinearLayoutManager.VERTICAL,false)
        photosAdapter = PhotosAdapter()
        recycler_view.adapter = photosAdapter
    }

    private fun doObserveWork() {
        photosViewModel.progressBarVisibility.observe(this, Observer {

        })
        photosViewModel.getPhotosFeed().observe(this, Observer {
            when (it.status) {
                Status.SUCCESS -> {
                    val gson: Gson = Gson()
                    renderPhotosList(it.data!!)
                }
                Status.ERROR -> {
                    
                }
                Status.LOADING -> {
                    
                }
            }
        })
    }

    private fun renderPhotosList(photosList: List<Photos>) {
        photosAdapter.addData(photosList)
        photosAdapter.notifyDataSetChanged()

    }
    
    override fun onQueryTextSubmit(query: String?): Boolean {
        photosAdapter.filter.filter(query)
        return false
    }
    
    override fun onQueryTextChange(newText: String?): Boolean {
        photosAdapter.filter.filter(newText)
        return false
    }
}