[Jetchat] Moved back to LiveData

Change-Id: I599817ddac91513c5e65c16e6a3c4838963fddc5

Jetchat/app/build.gradle

@@ -95,6 +95,7 @@ dependencies {
 
     implementation Libs.AndroidX.coreKtx
     implementation Libs.AndroidX.appcompat
+    implementation Libs.AndroidX.Lifecycle.livedata
     implementation Libs.AndroidX.Navigation.fragment
     implementation Libs.AndroidX.Navigation.uiKtx
     implementation Libs.material
@@ -105,6 +106,7 @@ dependencies {
     implementation Libs.AndroidX.Compose.tooling
     implementation Libs.AndroidX.Compose.uiUtil
     implementation Libs.AndroidX.Compose.runtime
+    implementation Libs.AndroidX.Compose.runtimeLivedata
     implementation Libs.AndroidX.Compose.viewBinding
 
     androidTestImplementation Libs.junit

Jetchat/app/src/main/java/com/example/compose/jetchat/MainViewModel.kt

@@ -16,22 +16,22 @@
 
 package com.example.compose.jetchat
 
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.StateFlow
 
 /**
  * Used to communicate between screens.
  */
 class MainViewModel : ViewModel() {
 
-    private val _drawerShouldBeOpened = MutableStateFlow(false)
-    val drawerShouldBeOpened: StateFlow<Boolean> = _drawerShouldBeOpened
+    private val _drawerShouldBeOpened = MutableLiveData(false)
+    val drawerShouldBeOpened: LiveData<Boolean> = _drawerShouldBeOpened
 
     fun openDrawer() {
         _drawerShouldBeOpened.value = true
     }
-    fun resetOpenDrawer() {
+    fun resetOpenDrawerAction() {
         _drawerShouldBeOpened.value = false
     }
 }

Jetchat/app/src/main/java/com/example/compose/jetchat/NavActivity.kt

@@ -22,6 +22,7 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.material.rememberScaffoldState
 import androidx.compose.runtime.Providers
 import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.platform.setContent
 import androidx.compose.ui.viewinterop.AndroidViewBinding
 import androidx.core.os.bundleOf
@@ -45,11 +46,11 @@ class NavActivity : AppCompatActivity() {
             Providers(AmbientBackPressedDispatcher provides this) {
                 val scaffoldState = rememberScaffoldState()
 
-                val openDrawerEvent = viewModel.drawerShouldBeOpened.collectAsState()
-                if (openDrawerEvent.value) {
+                val openDrawerEvent = viewModel.drawerShouldBeOpened.observeAsState()
+                if (openDrawerEvent.value == true) {
                     // Open drawer and reset state in VM.
                     scaffoldState.drawerState.open {
-                        viewModel.resetOpenDrawer()
+                        viewModel.resetOpenDrawerAction()
                     }
                 }
 

Jetchat/app/src/main/java/com/example/compose/jetchat/components/JetchatDrawer.kt

@@ -102,11 +102,14 @@ private fun ChatItem(text: String, selected: Boolean, onChatClicked: () -> Unit)
             .clickable(onClick = onChatClicked),
         verticalAlignment = CenterVertically
     ) {
-        val mediumEmphasisOnSurface =
+        val iconTint = if (selected) {
+            MaterialTheme.colors.primary
+        } else {
             MaterialTheme.colors.onSurface.copy(alpha = ContentAlpha.medium)
+        }
         Icon(
             vectorResource(id = R.drawable.ic_jetchat),
-            tint = if (selected) MaterialTheme.colors.primary else mediumEmphasisOnSurface,
+            tint = iconTint,
             modifier = Modifier.padding(8.dp)
         )
         Providers(AmbientContentAlpha provides ContentAlpha.medium) {

Jetchat/app/src/main/java/com/example/compose/jetchat/components/JetchatScaffold.kt

@@ -36,8 +36,7 @@ fun JetchatScaffold(
             drawerContent = {
                 JetchatDrawer(
                     onProfileClicked = onProfileClicked,
-                    onChatClicked = onChatClicked,
-
+                    onChatClicked = onChatClicked
                 )
             },
             bodyContent = content

Jetchat/app/src/main/java/com/example/compose/jetchat/profile/ProfileFragment.kt

@@ -21,7 +21,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.platform.ComposeView
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
@@ -49,7 +49,7 @@ class ProfileFragment : Fragment() {
 
         return ComposeView(context = requireContext()).apply {
             setContent {
-                viewModel.userData.collectAsState().value.let { userData: ProfileScreenState? ->
+                viewModel.userData.observeAsState().value.let { userData ->
                     JetchatTheme {
                         if (userData == null) {
                             ProfileError()

Jetchat/app/src/main/java/com/example/compose/jetchat/profile/ProfileViewModel.kt

@@ -18,11 +18,11 @@ package com.example.compose.jetchat.profile
 
 import androidx.annotation.DrawableRes
 import androidx.compose.runtime.Immutable
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import com.example.compose.jetchat.data.colleagueProfile
 import com.example.compose.jetchat.data.meProfile
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.StateFlow
 
 class ProfileViewModel : ViewModel() {
 
@@ -35,8 +35,8 @@ class ProfileViewModel : ViewModel() {
         _userData.value = if (userId == meProfile.userId) meProfile else colleagueProfile
     }
 
-    private val _userData = MutableStateFlow<ProfileScreenState?>(null)
-    val userData: StateFlow<ProfileScreenState?> = _userData
+    private val _userData = MutableLiveData<ProfileScreenState>()
+    val userData: LiveData<ProfileScreenState> = _userData
 }
 
 @Immutable