#31 - state treatment from list

Author: rviannaoliveira

build.gradle.kts

@@ -35,6 +35,7 @@ fun Project.configureAndroid() {
 
     apply(plugin = "kotlin-android")
     apply(plugin = "kotlin-kapt")
+    apply(plugin = "kotlin-parcelize")
 
     configure<com.android.build.gradle.BaseExtension> {
         compileSdkVersion(Config.compileSdkVersion)

core-navigation/src/main/java/com/codandotv/streamplayerapp/core_navigation/bottomnavigation/StreamPlayerBottomNavigation.kt

@@ -18,7 +18,10 @@ import androidx.navigation.NavController
 import com.codandotv.streamplayerapp.core_navigation.helper.currentRoute
 
 private val bottomMenuItems = listOf(
-    BottomNavItem.Home, BottomNavItem.Games, BottomNavItem.News, BottomNavItem.Downloads
+    BottomNavItem.Home,
+    BottomNavItem.Games,
+    BottomNavItem.News,
+    BottomNavItem.Downloads
 )
 
 @Composable

feature-list-streams/src/main/java/com/codandotv/streamplayerapp/feature_list_streams/list/presentation/screens/ListStreamViewModel.kt

@@ -16,40 +16,40 @@ import kotlinx.coroutines.launch
 class ListStreamViewModel(
     private val uiModel: ListStreamUimodel,
     private val useCase: ListStreamUseCase,
-) :  ViewModel(), DefaultLifecycleObserver {
+) : ViewModel(), DefaultLifecycleObserver {
 
-    private val _uiState = mutableStateOf(
+    val uiState = mutableStateOf(
         ListStreamsUIState(
             carousels = emptyList(),
             isLoading = false
         )
     )
-    val uiState : State<ListStreamsUIState> = _uiState
 
     override fun onCreate(owner: LifecycleOwner) {
         super.onCreate(owner)
-
         viewModelScope.launch {
-            useCase.getMovies()
-                .onStart { onLoading() }
-                .catchFailure {
-                    println(">>>> ${it.errorMessage}")
-                }
-                .onCompletion { loaded() }
-                .collect {
-                    _uiState.value = uiModel.convertToCardContent(it)
-                }
+            if (uiState.value.carousels.isEmpty()) {
+                useCase.getMovies()
+                    .onStart { onLoading() }
+                    .catchFailure {
+                        println(">>>> ${it.errorMessage}")
+                    }
+                    .onCompletion { loaded() }
+                    .collect {
+                        this@ListStreamViewModel.uiState.value = uiModel.convertToCardContent(it)
+                    }
+            }
         }
     }
 
     private fun loaded() {
-        _uiState.value = _uiState.value.copy(
+        this.uiState.value = this.uiState.value.copy(
             isLoading = false
         )
     }
 
     private fun onLoading() {
-        _uiState.value = _uiState.value.copy(
+        this.uiState.value = this.uiState.value.copy(
             isLoading = true
         )
     }

feature-list-streams/src/main/java/com/codandotv/streamplayerapp/feature_list_streams/list/presentation/screens/ListStreamsScreen.kt

@@ -1,8 +1,6 @@
 package com.codandotv.streamplayerapp.feature_list_streams.list.presentation.screens
 
 import android.annotation.SuppressLint
-import androidx.activity.OnBackPressedCallback
-import androidx.activity.compose.LocalOnBackPressedDispatcherOwner
 import androidx.compose.foundation.ScrollState
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
@@ -11,9 +9,7 @@ import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.DisposableEffect
-import androidx.compose.runtime.remember
+import androidx.compose.runtime.*
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -35,7 +31,7 @@ fun ListStreamsScreen(
     onNavigateDetailList: (String) -> Unit = {},
     disposable: () -> Unit = {}
 ) {
-    val uiState = remember {
+    val uiState = rememberSaveable() {
         viewModel.uiState
     }
     val lifecycleOwner = LocalLifecycleOwner.current
@@ -47,6 +43,7 @@ fun ListStreamsScreen(
 
         onDispose {
             lifecycle.removeObserver(viewModel)
+            uiState.value = viewModel.uiState.value
             disposable.invoke()
         }
     }

feature-list-streams/src/main/java/com/codandotv/streamplayerapp/feature_list_streams/list/presentation/screens/ListStreamsUIState.kt

@@ -1,13 +1,17 @@
 package com.codandotv.streamplayerapp.feature_list_streams.list.presentation.screens
 
+import android.os.Parcelable
 import com.codandotv.streamplayerapp.feature_list_streams.list.presentation.widgets.StreamsCardContent
+import kotlinx.parcelize.Parcelize
 
+@Parcelize
 data class CarouselData(
     val categoryName: String,
     val cards: List<StreamsCardContent>
-)
+) : Parcelable
 
+@Parcelize
 data class ListStreamsUIState(
     val carousels: List<CarouselData>,
     val isLoading: Boolean
-)
+) : Parcelable

feature-list-streams/src/main/java/com/codandotv/streamplayerapp/feature_list_streams/list/presentation/widgets/StreamsCard.kt

@@ -1,5 +1,6 @@
 package com.codandotv.streamplayerapp.feature_list_streams.list.presentation.widgets
 
+import android.os.Parcelable
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -12,12 +13,14 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import coil.compose.AsyncImage
 import com.codandotv.streamplayerapp.core_networking.Url.IMAGE_URL_SIZE_300
+import kotlinx.parcelize.Parcelize
 
+@Parcelize
 data class StreamsCardContent(
     val id: String,
     val url: String,
     val contentDescription: String,
-)
+) : Parcelable
 
 @Composable
 fun StreamsCard(