Develop Reference

Incorrect work of the fragmentManager in conjunction with the Jetpack Compose

I added jetpack compose into my old project and I have noticed one problem with fragmentManager work.
In short, I have the following transactions:
MainActivity -> SettingsFragment -> BackgroundSettingsFragment.
When we go to BackgroundSettingsFragment and we press a back button, we return to SettingsFragment, but its content is empty. I debbuged SettingsFragment, after returning here, everything looks fine, but layout field is just empty.
I added breakpoints to different lifecycle events (onCreate, onCreateView, onViewCreated). Everything works great, I see that resources also is fine.
Without jetpack compose dependencies, there is no problem.
In details, I have the following code.
buildFeatures {
compose true
}
composeOptions {
kotlinCompilerExtensionVersion compose_version
kotlinCompilerVersion "$rootProject.kotlinVersion"
}
// Dependencies
// --- Jetpack Compose ---
implementation "androidx.compose.ui:ui:$compose_version"
// Integration with activities
implementation "androidx.activity:activity-compose:1.5.1"
// Integration with ViewModels
implementation "androidx.lifecycle:lifecycle-viewmodel-compose:2.5.1"
// Tooling support (Previews, etc.)
implementation "androidx.compose.ui:ui-tooling:$compose_version"
// Foundation (Border, Background, Box, Image, Scroll, shapes, animations, etc.)
implementation 'androidx.compose.foundation:foundation:1.2.0'
// Material Design
implementation "androidx.compose.material:material:$compose_version"
// Material design icons
implementation "androidx.compose.material:material-icons-core:$compose_version"
implementation "androidx.compose.material:material-icons-extended:$compose_version"
// Integration with observables
implementation "androidx.compose.runtime:runtime-livedata:$compose_version"
implementation "androidx.compose.runtime:runtime-rxjava2:$compose_version"
// Navigation
implementation "androidx.navigation:navigation-compose:2.5.1"
implementation "androidx.hilt:hilt-navigation-compose:1.0.0"
MainActivity:
class MainActivity : RxAppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(layout)
redirectToSettingsFragment()
}
fun redirectToSettingsFragment() {
replaceFragmentSafely(SettingsFragment(), R.id.contentFrame)
}
}
SettingsFragment:
class SettingsFragment : RxFragment() {
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
setupToolbar()
setupView()
}
fun setupView() {
label.setText(R.string.background_settings)
value.setText(R.string.color)
}
fun setupToolbar() {
(activity as MainActivity).toolbar.setOnBackButtonClickListener {
activity?.onBackPressed()
}
}
fun redirectToSecondFragment() {
replaceFragmentSafely(BackgroundSettingsFragment(), R.id.contentFrame, allowBackStack = true)
}
}
BackgroundSettingsFragment:
class BackgroundSettingsFragment : RxFragment() {
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
setupToolbar()
}
fun setupToolbar() {
(activity as MainActivity).toolbar.setOnBackButtonClickListener {
activity?.onBackPressed()
}
}
}
fun AppCompatActivity.replaceFragmentSafely(fragment: Fragment,
#IdRes containerViewId: Int,
allowBackStack: Boolean = false) {
val fm = supportFragmentManager
.beginTransaction()
.replace(containerViewId, fragment, fragment.javaClass.toString())
if (allowBackStack) fm.addToBackStack(null)
try {
if (!supportFragmentManager.isStateSaved) {
fm.commit()
}
} catch (e: Exception) {
e.printStackTrace()
}
}
Here is the result.
What SettingsFragment looks like before we go to the BackgroundSettingsFragment:
What SettingsFragment looks like after we returned from the BackgroundSettingsFragment:
Please help, maybe someone already faced such a problem.

How to use the new ComponentActivity with ViewBinding and the other old AppCompatActivity components

According to this question, I tried to update my deprecated menus codes like setHasOptionsMenu , onCreateOptionsMenu and onOptionsItemSelected in my fragments and all app, but I should replace AppCompatActivity to ComponentActivity(R.layout.activity_example) but after doing this I see there's some problem, first I confused about how to use ViewBinding with it when I should remove setContentView(binding.root) from activity second the method setSupportActionBar(binding.appBarMain.toolbar) is not found, and I couldn't use the navigation components like supportFragmentManager and setupActionBarWithNavController
the third thing I couldn't"t declare this val menuHost: MenuHost = requireActivity() in onCreateView in fragment I see it's Required:
MenuHost
but Found:
FragmentActivity
here's my MainActivity code before edits
#AndroidEntryPoint
class MainActivity : AppCompatActivity() {
private lateinit var appBarConfiguration: AppBarConfiguration
private lateinit var binding: ActivityMainBinding
private lateinit var navController: NavController
private lateinit var postViewModel: PostViewModel
private lateinit var navGraph: NavGraph
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
postViewModel = ViewModelProvider(this)[PostViewModel::class.java]
postViewModel.getCurrentDestination()
setSupportActionBar(binding.appBarMain.toolbar)
val drawerLayout: DrawerLayout = binding.drawerLayout
val navHostFragment =
supportFragmentManager.findFragmentById(R.id.nav_host_fragment) as NavHostFragment?
if (navHostFragment != null) {
navController = navHostFragment.navController
}
navGraph = navController.navInflater.inflate(R.navigation.mobile_navigation)
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
appBarConfiguration = AppBarConfiguration(
setOf(
R.id.nav_home, R.id.nav_accessory,
R.id.nav_arcade, R.id.nav_fashion,
R.id.nav_food, R.id.nav_heath,
R.id.nav_lifestyle, R.id.nav_sports, R.id.nav_favorites, R.id.about
), drawerLayout
)
// setupActionBarWithNavController(navController, appBarConfiguration)
// navView.setupWithNavController(navController)
setupActionBarWithNavController(this, navController, appBarConfiguration)
setupWithNavController(binding.navView, navController)
// determineAdvertisingInfo()
}
override fun onSupportNavigateUp(): Boolean {
return navController.navigateUp(appBarConfiguration) || super.onSupportNavigateUp()
}
}
and this the implementation of menus in fragments
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
_binding = FragmentHomeBinding.inflate(inflater, container, false)
setHasOptionsMenu(true)
return binding.root
}
....................................................................................
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
inflater.inflate(R.menu.main, menu)
super.onCreateOptionsMenu(menu, inflater)
val searchManager =
requireContext().getSystemService(Context.SEARCH_SERVICE) as SearchManager
val searchView = menu.findItem(R.id.app_bar_search).actionView as SearchView
searchView.setSearchableInfo(searchManager.getSearchableInfo(requireActivity().componentName))
searchView.queryHint = resources.getString(R.string.searchForPosts)
searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
override fun onQueryTextSubmit(keyword: String): Boolean {
if (keyword.isEmpty()) {
Snackbar.make(
requireView(),
"please enter keyword to search",
Snackbar.LENGTH_SHORT
).show()
}
// itemArrayList.clear()
if (Utils.hasInternetConnection(requireContext())) {
postViewModel.getItemsBySearch(keyword)
postViewModel.searchedPostsResponse.observe(viewLifecycleOwner) { response ->
when (response) {
is NetworkResult.Success -> {
hideShimmerEffect()
itemArrayList.clear()
binding.progressBar.visibility = View.GONE
response.data?.let {
itemArrayList.addAll(it.items)
}
adapter.notifyDataSetChanged()
}
is NetworkResult.Error -> {
hideShimmerEffect()
// loadDataFromCache()
Toast.makeText(
requireContext(),
response.toString(),
Toast.LENGTH_LONG
).show()
}
is NetworkResult.Loading -> {
if (postViewModel.recyclerViewLayout.value == "titleLayout" ||
postViewModel.recyclerViewLayout.value == "gridLayout"
) {
hideShimmerEffect()
} else {
showShimmerEffect()
}
}
}
}
} else {
postViewModel.getItemsBySearchInDB(keyword)
postViewModel.postsBySearchInDB.observe(viewLifecycleOwner) { items ->
if (items.isNotEmpty()) {
hideShimmerEffect()
binding.progressBar.visibility = View.GONE
itemArrayList.clear()
itemArrayList.addAll(items)
adapter.notifyDataSetChanged()
}
}
}
return false
}
override fun onQueryTextChange(newText: String): Boolean {
return false
}
})
searchView.setOnCloseListener {
if (Utils.hasInternetConnection(requireContext())) {
Log.d(TAG, "setOnCloseListener: called")
itemArrayList.clear()
requestApiData()
} else {
noInternetConnectionLayout()
}
false
}
postViewModel.searchError.observe(viewLifecycleOwner) { searchError ->
if (searchError) {
Toast.makeText(
requireContext(),
"There's no posts with this keyword", Toast.LENGTH_LONG
).show()
}
}
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
if (item.itemId == R.id.change_layout) {
changeAndSaveLayout()
return true
}
return super.onOptionsItemSelected(item)
}
build.gradle dependencies
dependencies {
implementation 'androidx.core:core-ktx:1.6.0'
implementation 'androidx.appcompat:appcompat:1.4.2'
implementation ('com.google.android.material:material:1.6.1') {
exclude(group: 'androidx.recyclerview', module: 'recyclerview')
exclude(group: 'androidx.recyclerview', module: 'recyclerview-selection')
}
implementation "androidx.recyclerview:recyclerview:1.2.1"
// For control over item selection of both touch and mouse driven selection
implementation "androidx.recyclerview:recyclerview-selection:1.1.0"
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.5.0'
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.0'
implementation 'androidx.navigation:navigation-fragment-ktx:2.5.0'
implementation 'androidx.navigation:navigation-ui-ktx:2.5.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
//Retrofit
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
// //Moshi
// implementation("com.squareup.moshi:moshi:1.13.0")
// implementation("com.squareup.retrofit2:converter-moshi:2.9.0")
// kapt "com.squareup.moshi:moshi-kotlin-codegen:1.13.0"
implementation 'com.github.bumptech.glide:glide:4.12.0'
implementation 'org.jsoup:jsoup:1.14.1'
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'org.apache.commons:commons-lang3:3.8.1'
implementation 'org.ocpsoft.prettytime:prettytime:4.0.1.Final'
implementation "androidx.browser:browser:1.4.0"
implementation 'androidx.multidex:multidex:2.0.1'
configurations {
all*.exclude group: 'com.google.guava', module: 'listenablefuture'
}
//Room
implementation "androidx.room:room-runtime:2.4.2"
kapt "androidx.room:room-compiler:2.4.2"
implementation "androidx.room:room-ktx:2.4.2"
androidTestImplementation "androidx.room:room-testing:2.4.2"
//Dagger - Hilt
implementation 'com.google.dagger:hilt-android:2.42'
kapt 'com.google.dagger:hilt-android-compiler:2.42'
//SDP & SSP
implementation 'com.intuit.sdp:sdp-android:1.0.6'
implementation 'com.intuit.ssp:ssp-android:1.0.6'
// Shimmer
implementation 'com.facebook.shimmer:shimmer:0.5.0'
//firebase & analytics
implementation platform('com.google.firebase:firebase-bom:28.4.0')
implementation 'com.google.firebase:firebase-analytics'
//crashlytics
implementation 'com.google.firebase:firebase-crashlytics'
implementation 'com.google.firebase:firebase-analytics'
// DataStore
implementation 'androidx.datastore:datastore-preferences:1.0.0'
implementation("androidx.datastore:datastore-preferences-rxjava3:1.0.0")
//admob
implementation 'com.google.android.gms:play-services-ads:21.1.0'
implementation platform('com.google.firebase:firebase-bom:30.2.0')
implementation project(':nativetemplates')
implementation("androidx.ads:ads-identifier:1.0.0-alpha04")
// Used for the calls to addCallback() in the snippets on this page.
implementation("com.google.guava:guava:28.0-android")
implementation 'com.google.firebase:firebase-analytics'
implementation("androidx.activity:activity-ktx:1.5.0")
}

Simplest solution from top of my head (hopefully it will work for you):
val menuHost: MenuHost = requireActivity() as MenuHost
This example is for fragment but I guess you can easily apply it to activity:
First extend fragment with MenuProvider:
class SomeFragment : SomethingIfYouHave(), MenuProvider { /* Your code */ }
Now in onCreateView:
val menuHost: MenuHost = requireActivity() as MenuHost
menuHost.addMenuProvider(this, viewLifecycleOwner, Lifecycle.State.RESUMED)
Later in code override onCreateMenu and onMenuItemSelected.
override fun onCreateMenu(menu: Menu, inflater: MenuInflater) {
inflater.inflate(R.menu.info_menu, menu)
}
override fun onMenuItemSelected(item: MenuItem): Boolean {
return when (item.itemId) {
R.id.something-> {
// Do something here
true
}
else -> false
}
}
AppCompatActivity extends FragmentActivity which extends ComponentActivity, why to use ComponentActivity directly?
Please revert it to:
class MainActivity : AppCompatActivity() { /* Your code here */ }
I think your only problem was in this line:
val menuHost: MenuHost = requireActivity() as MenuHost
------------------- UPDATE
*ComponentActivity has all you need for a Compose-only app.
If you need AppCompat APIs, an AndroidView which works with AppCompat or MaterialComponents theme, or you need Fragments then use AppCompatActivity.
Reference*
You are not using purely ComposeUI, so that is why you need AppCompat and not ComponentActivity.
If you want to use ComponentActivity without AppCompat you need to get rid off supportFragmentManager.
This would go out of the scope but please check ComposeUI Fragments if you want to switch on ComposeUI (I didn't write article).

Recycler View doesn't update list after notifyDataSetChanged()

to describe the problem simply, i have main activity where it has viewPager2 which displays 2 fragments. The main activity also obtains a toolbar with search MenuOptions. i am trying to search artist therefore it will automatically update the recycler view in the first fragment (videoCallHomefragment). i don't know where is the problem as this is my 3rd day in debugging this matter and i still ended up nowhere.
my assumptions
there must be conflict because i am using viewpager2 and trying to update recycler view in a fragment from an activity
dependencies versioning conflict that results in "notifyDataSetChanged()" not working, on the other hand, i tried an alternative using DiffUtil and still not working
p.s. the app successfully retrieves artists and displays them in recycler view which indicated that the function "setData" in the adapter is working, but when searching for artist, the "onBindViewHolder" and "onCreateViewHolder" doesn't get initiated or called when calling notifyDataSetChanged()
See Below code snippets
MainActivity
#AndroidEntryPoint
class MainActivity : AppCompatActivity(), ArtistsAdapter.OnArtistListener {
private lateinit var binding: ActivityMainBinding
private val mAdapter by lazy { ArtistsAdapter(this) }
private val mainViewModel: MainViewModel by viewModels()
private lateinit var viewPager2:ViewPager2
private lateinit var fragement: Fragment
private lateinit var artists: List<Artist>
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
fragement = supportFragmentManager.findFragmentById(R.id.videoCallHomeFragment)!!
setSupportActionBar(findViewById(R.id.toolbar))
val tabLayout = findViewById<TabLayout>(R.id.tab_layout)
viewPager2 = findViewById(R.id.view_pager_2)
val adapter = ViewPagerAdapter(supportFragmentManager, lifecycle)
viewPager2.adapter = adapter
TabLayoutMediator(tabLayout, viewPager2){tab, postion ->
when(postion) {
0 -> {
tab.text="Artists"
}
1 -> {
tab.text = "Voice Calls"
}
}
}.attach()
viewPager2.registerOnPageChangeCallback(object: ViewPager2.OnPageChangeCallback(), SearchView.OnQueryTextListener {
#SuppressLint("ResourceType")
override fun onPageSelected(position: Int) {
if(position == 0)
{
val toolbar = findViewById<Toolbar>(R.id.mainToolbar)
toolbar.inflateMenu(R.menu.search_menu)
val search = toolbar.menu.findItem(R.id.menu_search)
val searchView = search?.actionView as? SearchView
searchView?.isSubmitButtonEnabled = true
searchView?.setOnQueryTextListener(this)
} else {
val toolbar = findViewById<Toolbar>(R.id.mainToolbar)
toolbar.menu.clear()
}
}
#SuppressLint("NotifyDataSetChanged")
override fun onQueryTextSubmit(query: String?): Boolean {
if(query != null){
// recyclerView.adapter = mAdapter
// recyclerView.layoutManager = LinearLayoutManager(applicationContext, LinearLayoutManager.VERTICAL, false)
searchArtist(query)
mAdapter.notifyDataSetChanged()
}
return true
}
#SuppressLint("NotifyDataSetChanged")
override fun onQueryTextChange(newText: String?): Boolean {
if(newText != null){
// recyclerView.adapter = mAdapter
// recyclerView.layoutManager = LinearLayoutManager(applicationContext, LinearLayoutManager.VERTICAL, false)
searchArtist(newText)
mAdapter.notifyDataSetChanged()
}
return true
}
})
requestPermissions()
val toolbar = findViewById<Toolbar>(R.id.mainToolbar)
toolbar.setBackgroundColor(Color.rgb(32, 4, 209))
toolbar.setTitleTextColor(Color.WHITE)
toolbar.setTitle(R.string.app_name)
}
private fun requestPermissions()
{
if (PermissionRequestUtil.hasCameraPermissions(this)) {
return
} else {
EasyPermissions.requestPermissions(
this,
"Please accept camera permissions to use this app.",
0,
Manifest.permission.CAMERA
)
}
}
#SuppressLint("NotifyDataSetChanged")
private fun searchArtist(query: String)
{
val searchQuery = "%$query%"
lifecycle.coroutineScope.launch {
mainViewModel.searchArtist(searchQuery).collect { it ->
mAdapter.setData(it)
mAdapter.notifyDataSetChanged()
Log.i(TAG, "new artist List set!!")
}
}
}
override fun onArtistClick(artist: Artist, position: Int) {
TODO("Not yet implemented")
}
}
VideoCallHomeFragment
package com.example.awfc.ui
import android.annotation.SuppressLint
import android.content.Context
import android.content.Intent
import android.os.Bundle
import android.view.*
import androidx.fragment.app.Fragment
import androidx.lifecycle.ViewModelProvider
import androidx.lifecycle.coroutineScope
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.example.awfc.R
import com.example.awfc.adapters.ArtistsAdapter
import com.example.awfc.data.Artist
import com.example.awfc.viewmodels.MainViewModel
import com.todkars.shimmer.ShimmerRecyclerView
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.launch
#AndroidEntryPoint
class VideoCallHomeFragment : Fragment() , ArtistsAdapter.OnArtistListener {
private lateinit var mainViewModel: MainViewModel
private val mAdapter by lazy { ArtistsAdapter(this)}
private lateinit var mView: View
private lateinit var artists: List<Artist>
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
mView = inflater.inflate(R.layout.fragment_video_call_home, container, false)
setHasOptionsMenu(true)
//val shimmer = mView.findViewById<ShimmerRecyclerView>(R.id.recycler_view)
//shimmer.showShimmer()
setupRecyclerView()
mainViewModel = ViewModelProvider(requireActivity()).get(MainViewModel::class.java)
lifecycle.coroutineScope.launch {
mainViewModel.getArtists().collect {
artists = it
mAdapter.setData(it)
//shimmer.hideShimmer()
}
}
return mView
}
#SuppressLint("CutPasteId")
fun setupRecyclerView()
{
mView.findViewById<RecyclerView>(R.id.recycler_view).adapter = mAdapter
mView.findViewById<RecyclerView>(R.id.recycler_view).layoutManager = LinearLayoutManager(requireContext(), LinearLayoutManager.VERTICAL, false)
}
override fun onArtistClick(artist: Artist, position: Int) {
artists[position]
val intent = Intent(this.context, ArtistDetailsActivity::class.java)
intent.putExtra("artistName", artist.name)
intent.putExtra("arabicName", artist.name_arabic)
intent.putExtra("arabicDesc", artist.description_arabic)
intent.putExtra("artistDesc", artist.description)
intent.putExtra("artistImage", artist.image)
intent.putExtra("artistVideo1", artist.videoUrl1)
intent.putExtra("artistVideo2", artist.videoUrl2)
intent.putExtra("artistVideo3", artist.videoUrl3)
startActivity(intent)
}
}
Artist Adapter
package com.example.awfc.adapters
import android.annotation.SuppressLint
import android.content.ContentValues.TAG
import android.content.Intent
import android.service.autofill.OnClickAction
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.RecyclerView
import com.example.awfc.data.Artist
import com.example.awfc.databinding.ArtistRowLayoutBinding
import com.example.awfc.utils.ArtistsDiffUtil
class ArtistsAdapter(var artistListener: OnArtistListener) : RecyclerView.Adapter<ArtistsAdapter.MyViewHolder>() {
private var artists = emptyList<Artist>()
class MyViewHolder(private val binding: ArtistRowLayoutBinding) :
RecyclerView.ViewHolder(binding.root) {
fun init(artist: Artist, action: OnArtistListener)
{
itemView.setOnClickListener {
action.onArtistClick(artist, adapterPosition)
}
}
fun bind(modelClass: Artist) {
binding.result = modelClass
binding.executePendingBindings()
}
companion object {
fun from(parent: ViewGroup): MyViewHolder {
val layoutInflater = LayoutInflater.from(parent.context)
val binding = ArtistRowLayoutBinding.inflate(layoutInflater, parent, false)
return MyViewHolder(binding)
}
}
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
Log.i(TAG, "OnCreateViewHolder initiated")
return MyViewHolder(
ArtistRowLayoutBinding.inflate(
LayoutInflater.from(parent.context),
parent,
false
)
)
}
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
val currentResult = artists[position]
holder.bind(currentResult)
holder.init(currentResult, artistListener)
Log.i(TAG, "OnBindViewHOlder initiated")
}
override fun getItemCount(): Int {
return artists.size
}
#SuppressLint("NotifyDataSetChanged")
fun setData(newData: List<Artist>) {
val artistsDiffUtil = ArtistsDiffUtil(artists, newData)
val diffUtilResult = DiffUtil.calculateDiff(artistsDiffUtil)
artists = emptyList()
artists = newData
diffUtilResult.dispatchUpdatesTo(this)
this.notifyDataSetChanged()
//this.notifyDataSetChanged()
}
interface OnArtistListener {
fun onArtistClick(artist:Artist, position: Int)
}
}
artistDiffUtil
package com.example.awfc.utils
import androidx.recyclerview.widget.DiffUtil
class ArtistsDiffUtil<T>(
private val oldList: List<T>,
private val newList: List<T>
): DiffUtil.Callback() {
override fun getOldListSize(): Int {
return oldList.size
}
override fun getNewListSize(): Int {
return newList.size
}
override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
return oldList[oldItemPosition] === newList[newItemPosition]
}
override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
return oldList[oldItemPosition] == newList[newItemPosition]
}
}
gradleFile
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
id 'dagger.hilt.android.plugin'
id 'kotlin-parcelize'
id 'androidx.navigation.safeargs'
}
android {
compileSdk 31
buildFeatures {
viewBinding true
dataBinding true
}
defaultConfig {
applicationId "com.example.awfc"
minSdk 21
targetSdk 31
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
javaCompileOptions {
annotationProcessorOptions {
arguments += ["room.schemaLocation":
"$projectDir/schemas".toString()]
}
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
}
dependencies {
def room_version = "2.4.2"
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"
implementation "androidx.room:room-ktx:$room_version"
implementation "com.google.dagger:hilt-android:2.28.3-alpha"
kapt "com.google.dagger:hilt-android-compiler:2.28.3-alpha"
implementation "androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha02"
kapt "androidx.hilt:hilt-compiler:1.0.0-alpha02"
implementation 'com.facebook.shimmer:shimmer:0.5.0'
implementation 'com.todkars:shimmer-recyclerview:0.4.1'
implementation 'de.hdodenhof:circleimageview:3.1.0'
// Image Loading library Coil
implementation "io.coil-kt:coil:0.13.0"
implementation 'com.squareup.picasso:picasso:2.71828'
// UI Tests
androidTestImplementation 'androidx.compose.ui:ui-test-junit4:1.1.1'
// When using a AppCompat theme
implementation "com.google.accompanist:accompanist-appcompat-theme:0.16.0"
implementation "com.google.android.material:compose-theme-adapter:1.1.1"
// Lifecycle
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0"
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0"
implementation 'com.yqritc:android-scalablevideoview:1.0.4'
implementation 'com.github.bumptech.glide:glide:4.11.0'
kapt 'com.github.bumptech.glide:compiler:4.11.0'
implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.4.0'
implementation("javax.inject:javax.inject:1")
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
implementation 'androidx.navigation:navigation-fragment-ktx:2.4.1'
implementation 'androidx.navigation:navigation-ui-ktx:2.4.1'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
// viewpager2
implementation 'androidx.viewpager2:viewpager2:1.0.0'
//tablayout
implementation 'com.google.android.material:material:1.3.0-alpha04'
// For developers using AndroidX in their applications
implementation 'pub.devrel:easypermissions:3.0.0'
}

You're creating two separate instances of ArtistsAdapter in MainActivity and VideoCallHomeFragment. It sounds like the adapter works fine if setData is working inside the fragment that's actually displaying the RecyclerView, because that's the one that has access to the actual adapter that's displaying the data.
But in searchArtist in MainActivity, you're calling setData on a completely different adapter instance that isn't connected to the RecyclerView in any way, so nothing's gonna happen.
Instead of having the activity trying to talk to a widget hosted in a fragment, it would be better to have a LiveData or similar in your view model that contains the data that's supposed to be displayed. Make VideoCallHomeFragment observe that, and it can call setData on the adapter. Your activity can call viewModel.getArtists() or whatever, but that function should internally update the LiveData so that anything observing it will see the new data to display.

Jetpack Compose : ViewTreeLifecycleOwner not found

I'm getting this error while using Compose in my fragment which works fine in case of XML
ViewTreeLifecycleOwner not found from androidx.fragment.app.FragmentContainerView
I'm using a single activity approach without using Jetpack Navigation component
Activity:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_nav)
supportFragmentManager.commit {
setReorderingAllowed(true)
add<InboxFragment>(R.id.nav_fragmentContainerView_appNav)
}
}
<androidx.fragment.app.FragmentContainerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/nav_fragmentContainerView_appNav"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
Fragment:
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
return ComposeView(requireContext()).apply {
setContent {
Text(text = "HELLO FRIEND!")
}
}
}
Dependencies:
def fragment_version = "1.3.3"
implementation("androidx.fragment:fragment-ktx:$fragment_version")
def compose_version = "1.0.0-beta06"
implementation "androidx.compose.ui:ui:$compose_version"
implementation "androidx.compose.ui:ui-tooling:$compose_version"
implementation "androidx.compose.material:material:$compose_version"
implementation "androidx.activity:activity-compose:1.3.0-alpha07"
classpath "com.android.tools.build:gradle:7.0.0-alpha15"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.30"

Since you are using an AppCompatActivity, only the appcompat 1.3 versions populate the ViewTreeLifecycleOwner.
Add:
implementation 'androidx.appcompat:appcompat:1.3.0'

None of these worked and there seems to be an open issue with BottomSheetDialog.
https://issuetracker.google.com/issues/261078350

How to set subtilte in NavHostFragment with the Navigation component?

package `my`.app.ui
import `my`.app.R
import android.os.Bundle
import androidx.fragment.app.Fragment
class Support : Fragment(R.layout.appui) {
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
activity.apply {
this?.actionBar?.title = "title"
this?.actionBar?.subtitle = "subtitle"
}
}
}
NavigationUI is not supporting set title or subtitle ?
And below is the dependency used for project
- implementation 'androidx.core:core-ktx:1.3.0'
- implementation 'androidx.appcompat:appcompat:1.1.0'
- implementation 'androidx.navigation:navigation-fragment-ktx:2.3.0'
- implementation 'androidx.navigation:navigation-ui-ktx:2.3.0'

You can add the OnDestinationChangedListener to set the title after your setup method:
navController.addOnDestinationChangedListener { controller, destination, arguments ->
if (destination.id == R.id.nav_xxx){
supportActionBar?.title = "My Title"
}
//.....
}