Загрузка отчета по лабораторной 4.

app/build.gradle.kts

@@ -1,6 +1,7 @@
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
+    id("com.google.devtools.ksp")
 }
 
 android {
@@ -9,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId = "com.example.myapplication"
-        minSdk = 24
+        minSdk = 26
         targetSdk = 33
         versionCode = 1
         versionName = "1.0"
@@ -27,17 +28,17 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = "17"
     }
     buildFeatures {
         compose = true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion = "1.4.3"
+        kotlinCompilerExtensionVersion = "1.4.5"
     }
     packaging {
         resources {
@@ -46,16 +47,34 @@ android {
     }
 }
 
-dependencies {
+kotlin {
+    jvmToolchain(17)
+}
 
+dependencies {
+    //Core
     implementation("androidx.core:core-ktx:1.9.0")
-    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.1")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
-    implementation("androidx.activity:activity-compose:1.7.0")
+
+    //UI
+    implementation("androidx.activity:activity-compose:1.7.2")
     implementation(platform("androidx.compose:compose-bom:2023.03.00"))
+    implementation("androidx.navigation:navigation-compose:2.6.0")
+    implementation("io.coil-kt:coil-compose:2.4.0")
     implementation("androidx.compose.ui:ui")
     implementation("androidx.compose.ui:ui-graphics")
     implementation("androidx.compose.ui:ui-tooling-preview")
     implementation("androidx.compose.material3:material3")
+
+    // Room
+    val room_version = "2.5.2"
+    implementation("androidx.room:room-runtime:$room_version")
+    annotationProcessor("androidx.room:room-compiler:$room_version")
+    ksp("androidx.room:room-compiler:$room_version")
+    implementation("androidx.room:room-ktx:$room_version")
+    implementation("androidx.room:room-paging:$room_version")
+
+    //Tests
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")

app/src/main/java/com/example/myapplication/MainActivity.kt

@@ -10,6 +10,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
+import com.example.myapplication.composeui.navigation.MainNavbar
 import com.example.myapplication.ui.theme.MyApplicationTheme
 
 class MainActivity : ComponentActivity() {
@@ -19,7 +20,7 @@ class MainActivity : ComponentActivity() {
             MyApplicationTheme {
                 // A surface container using the 'background' color from the theme
                 Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
-                    Greeting("World")
+                    MainNavbar()
                 }
             }
         }

app/src/main/java/com/example/myapplication/category/composeui/CategotyList.kt

@@ -0,0 +1,65 @@
+package com.example.myapplication.category.composeui
+
+import android.content.res.Configuration
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
+import com.example.myapplication.category.model.Category
+import com.example.myapplication.database.AppDatabase
+import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.user.model.User
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+@Composable
+fun CategoriesList(navController: NavController?) {
+    val context = LocalContext.current;
+    val categories = remember { mutableStateListOf<Category>() }
+    LaunchedEffect(Unit) {
+        withContext(Dispatchers.IO) {
+            AppDatabase.getInstance(context).categoryDao().getAll().collect { data ->
+                categories.clear()
+                categories.addAll(data)
+            }
+        }
+    }
+    Column(
+        horizontalAlignment = Alignment.CenterHorizontally,
+        modifier = Modifier
+            .padding(all = 10.dp)
+            .verticalScroll(rememberScrollState())) {
+        categories.forEachIndexed() { _, category ->
+            Row(Modifier.padding(all = 20.dp)) {
+                Text(category.category_name)
+                }
+            }
+        }
+}
+
+@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
+@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
+@Composable
+fun CategoryPreview() {
+    MyApplicationTheme {
+        Surface(
+            color = MaterialTheme.colorScheme.background
+        ) {
+            CategoriesList(navController = null)
+        }
+    }
+}

app/src/main/java/com/example/myapplication/category/dao/CategoryDao.kt

@@ -0,0 +1,27 @@
+package com.example.myapplication.category.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Delete
+import androidx.room.Update
+import com.example.myapplication.category.model.Category
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface CategoryDao {
+    @Query("select * from categories order by category_name collate nocase asc")
+    fun getAll(): Flow<List<Category>>
+
+    @Query("select * from categories where categories.uid = :uid")
+    suspend fun getByUid(uid: Int): Category
+
+    @Insert
+    suspend fun insert(category: Category)
+
+    @Update
+    suspend fun update(category: Category)
+
+    @Delete
+    suspend fun delete(category: Category)
+}

app/src/main/java/com/example/myapplication/category/model/Category.kt

@@ -0,0 +1,11 @@
+package com.example.myapplication.category.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "categories")
+data class Category(
+    @PrimaryKey val uid: Int,
+    val category_name: String,
+)
+

app/src/main/java/com/example/myapplication/challenge/dao/ChallengeDao.kt

@@ -0,0 +1,27 @@
+package com.example.myapplication.challenge.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Delete
+import androidx.room.Update
+import com.example.myapplication.challenge.model.Challenge
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ChallengeDao {
+    @Query("select * from challenges order by challenge_name asc")
+    fun getAll(): Flow<List<Challenge>>
+
+    @Query("select * from challenges where challenges.challenge_id = :uid")
+    suspend fun getByUid(uid: Int): Challenge
+
+    @Insert
+    suspend fun insert(challenge: Challenge)
+
+    @Update
+    suspend fun update(challenge: Challenge)
+
+    @Delete
+    suspend fun delete(challenge: Challenge)
+}

app/src/main/java/com/example/myapplication/challenge/model/Challenge.kt

@@ -0,0 +1,33 @@
+package com.example.myapplication.challenge.model
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.PrimaryKey
+import com.example.myapplication.category.model.Category
+import com.example.myapplication.user.model.User
+
+@Entity(tableName = "challenges", foreignKeys = [
+    ForeignKey(
+        entity = User::class,
+        parentColumns = ["uid"],
+        childColumns = ["user_id"],
+        onDelete = ForeignKey.RESTRICT,
+        onUpdate = ForeignKey.RESTRICT,
+    ),
+    ForeignKey(
+        entity = Category::class,
+        parentColumns = ["uid"],
+        childColumns = ["category_id"],
+        onDelete = ForeignKey.RESTRICT,
+        onUpdate = ForeignKey.RESTRICT,
+    ),
+])
+data class Challenge(
+    @PrimaryKey val challenge_id: Int,
+    val challenge_name: String,
+    val challenge_status: Boolean,
+    val category_id: Int,
+    @ColumnInfo(index = true)
+    val user_id: Int,
+)

app/src/main/java/com/example/myapplication/composeui/About.kt

@@ -0,0 +1,46 @@
+package com.example.myapplication.composeui
+
+import android.content.res.Configuration
+import android.widget.TextView
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.viewinterop.AndroidView
+import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.R;
+
+@Composable
+fun About() {
+    val localContext = LocalContext.current
+    val aboutText = localContext.resources.getText(R.string.about_text)
+
+    Column(Modifier.padding(all = 10.dp)) {
+        AndroidView(
+            modifier = Modifier
+                .fillMaxWidth(),
+            factory = { context -> TextView(context) },
+            update = { it.text = aboutText }
+        )
+    }
+}
+
+@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
+@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
+@Composable
+fun AboutPreview() {
+    MyApplicationTheme {
+        Surface(
+            color = MaterialTheme.colorScheme.background
+        ) {
+            About()
+        }
+    }
+}

app/src/main/java/com/example/myapplication/composeui/navigation/MainNavbar.kt

@@ -0,0 +1,154 @@
+package com.example.myapplication.composeui.navigation
+import android.content.res.Configuration
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.NavigationBar
+import androidx.compose.material3.NavigationBarItem
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.navigation.NavDestination
+import androidx.navigation.NavDestination.Companion.hierarchy
+import androidx.navigation.NavGraph.Companion.findStartDestination
+import androidx.navigation.NavHostController
+import androidx.navigation.NavType
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.currentBackStackEntryAsState
+import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
+import com.example.myapplication.R
+import com.example.myapplication.category.composeui.CategoriesList
+import com.example.myapplication.composeui.About
+import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.user.composeui.UserView
+import com.example.myapplication.user.composeui.UsersList
+
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun Topbar(
+    navController: NavHostController,
+    currentScreen: Screen?
+) {
+    TopAppBar(
+        colors = TopAppBarDefaults.smallTopAppBarColors(
+            containerColor = MaterialTheme.colorScheme.primary,
+            titleContentColor = MaterialTheme.colorScheme.onPrimary,
+        ),
+        title = {
+            Text(stringResource(currentScreen?.resourceId ?: R.string.app_name))
+        },
+        navigationIcon = {
+            if (
+                navController.previousBackStackEntry != null
+                && (currentScreen == null || !currentScreen.showInBottomBar)
+            ) {
+                IconButton(onClick = { navController.navigateUp() }) {
+                    Icon(
+                        imageVector = Icons.Filled.ArrowBack,
+                        contentDescription = null,
+                        tint = MaterialTheme.colorScheme.onPrimary
+                    )
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun Navbar(
+    navController: NavHostController,
+    currentDestination: NavDestination?,
+    modifier: Modifier = Modifier
+) {
+    NavigationBar(modifier) {
+        Screen.bottomBarItems.forEach { screen ->
+            NavigationBarItem(
+                icon = { Icon(screen.icon, contentDescription = null) },
+                label = { Text(stringResource(screen.resourceId)) },
+                selected = currentDestination?.hierarchy?.any { it.route == screen.route } == true,
+                onClick = {
+                    navController.navigate(screen.route) {
+                        popUpTo(navController.graph.findStartDestination().id) {
+                            saveState = true
+                        }
+                        launchSingleTop = true
+                        restoreState = true
+                    }
+                }
+            )
+        }
+    }
+}
+
+@Composable
+fun Navhost(
+    navController: NavHostController,
+    innerPadding: PaddingValues, modifier:
+    Modifier = Modifier
+) {
+    NavHost(
+        navController,
+        startDestination = Screen.About.route,
+        modifier.padding(innerPadding)
+    ) {
+        composable(Screen.CategoryList.route) { CategoriesList(navController)}
+        composable(Screen.About.route) { About() }
+        composable(Screen.UserList.route) { UsersList(navController)}
+        composable(
+            Screen.UserView.route,
+            arguments = listOf(navArgument("id") { type = NavType.IntType })
+        ) { backStackEntry ->
+            backStackEntry.arguments?.let { UserView(it.getInt("id")) }
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MainNavbar() {
+    val navController = rememberNavController()
+    val navBackStackEntry by navController.currentBackStackEntryAsState()
+    val currentDestination = navBackStackEntry?.destination
+    val currentScreen = currentDestination?.route?.let { Screen.getItem(it) }
+
+    Scaffold(
+        topBar = {
+            Topbar(navController, currentScreen)
+        },
+        bottomBar = {
+            if (currentScreen == null || currentScreen.showInBottomBar) {
+                Navbar(navController, currentDestination)
+            }
+        }
+    ) { innerPadding ->
+        Navhost(navController, innerPadding)
+    }
+}
+
+@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
+@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
+@Composable
+fun MainNavbarPreview() {
+    MyApplicationTheme {
+        Surface(
+            color = MaterialTheme.colorScheme.background
+        ) {
+            MainNavbar()
+        }
+    }
+}

app/src/main/java/com/example/myapplication/composeui/navigation/Screen.kt

@@ -0,0 +1,43 @@
+package com.example.myapplication.composeui.navigation
+
+import androidx.annotation.StringRes
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Favorite
+import androidx.compose.material.icons.filled.Info
+import androidx.compose.material.icons.filled.List
+import androidx.compose.material.icons.filled.Person
+import androidx.compose.ui.graphics.vector.ImageVector
+import com.example.myapplication.R
+
+enum class Screen(
+    val route: String,
+    @StringRes val resourceId: Int,
+    val icon: ImageVector = Icons.Filled.Favorite,
+    val showInBottomBar: Boolean = true
+) {
+    CategoryList(
+        "categories-list", R.string.categories_list, Icons.Filled.List
+    ),
+    UserList(
+      "users-list", R.string.user_list, Icons.Filled.Person
+    ),
+    About(
+        "about", R.string.about_main_title, Icons.Filled.Info
+    ),
+    UserView(
+      "user-view/{id}", R.string.user_view_title, showInBottomBar = false
+    );
+
+    companion object {
+        val bottomBarItems = listOf(
+            CategoryList,
+            UserList,
+            About,
+        )
+
+        fun getItem(route: String): Screen? {
+            val findRoute = route.split("/").first()
+            return values().find { value -> value.route.startsWith(findRoute) }
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/AppDatabase.kt

@@ -0,0 +1,79 @@
+package com.example.myapplication.database
+
+import java.util.concurrent.Flow
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.sqlite.db.SupportSQLiteDatabase
+import com.example.myapplication.category.dao.CategoryDao
+import com.example.myapplication.category.model.Category
+import com.example.myapplication.user.model.UserWithChallenges
+import com.example.myapplication.challenge.dao.ChallengeDao
+import com.example.myapplication.challenge.model.Challenge
+import com.example.myapplication.user.dao.UserDao
+import com.example.myapplication.user.model.User
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import java.time.LocalDate
+
+@Database(entities = [User::class, Challenge::class, Category::class], version = 1, exportSchema = false)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun challengeDao(): ChallengeDao
+    abstract fun categoryDao(): CategoryDao
+    abstract fun userDao(): UserDao
+
+
+
+    companion object {
+        private const val DB_NAME: String = "sport-app-db"
+
+        @Volatile
+        private var INSTANCE: AppDatabase? = null
+
+        private suspend fun populateDatabase() {
+            INSTANCE?.let { database ->
+
+                val categoryDao = database.categoryDao()
+                val category1 = Category(3, "Кардио")
+                val category2 = Category(4, "Силовые тренировки")
+                categoryDao.insert(category1)
+                categoryDao.insert(category2)
+
+                val userDao = database.userDao()
+                val user1 = User(3, "test1", "1234", "John")
+                val user2 = User(4, "test2", "1234", "Ivan")
+                userDao.insert(user1)
+                userDao.insert(user2)
+
+                val challengeDao = database.challengeDao()
+                val challenge1 = Challenge(3, "Сделать 10 отжиманий", false, category2.uid, user1.uid)
+                val challenge2 = Challenge(4, "Пробежать 1 км", true, category1.uid, user2.uid)
+                challengeDao.insert(challenge1)
+                challengeDao.insert(challenge2)
+            }
+        }
+
+        fun getInstance(appContext: Context): AppDatabase {
+            return INSTANCE ?: synchronized(this) {
+                Room.databaseBuilder(
+                    appContext,
+                    AppDatabase::class.java,
+                    DB_NAME
+                )
+                    .addCallback(object : RoomDatabase.Callback() {
+                        override fun onCreate(db: SupportSQLiteDatabase) {
+                            super.onCreate(db)
+                            CoroutineScope(Dispatchers.IO).launch {
+                                populateDatabase()
+                            }
+                        }
+                    })
+                    .build()
+                    .also { INSTANCE = it }
+            }
+        }
+    }
+}

app/src/main/java/com/example/myapplication/user/composeui/UserView.kt

@@ -0,0 +1,91 @@
+package com.example.myapplication.user.composeui
+
+import android.content.res.Configuration
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.R
+import com.example.myapplication.database.AppDatabase
+import com.example.myapplication.user.model.UserWithChallenges
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+    fun UserView(id: Int) {
+        val context = LocalContext.current
+        val (userWithChallanges, setUserWithChallanges) = remember { mutableStateOf<UserWithChallenges?>(null) }
+        LaunchedEffect(Unit) {
+            withContext(Dispatchers.IO) {
+                setUserWithChallanges(AppDatabase.getInstance(context).userDao().getByUid(id))
+            }
+        }
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            modifier = Modifier
+                .padding(all = 10.dp)
+                .verticalScroll(rememberScrollState())
+        ) {
+            OutlinedTextField(
+                modifier = Modifier.fillMaxWidth(),
+                value = userWithChallanges?.user?.login.toString(),
+                onValueChange = {},
+                readOnly = true,
+                label = {
+                    Text(stringResource(id = R.string.user_login))
+                }
+            )
+            OutlinedTextField(
+                modifier = Modifier.fillMaxWidth(),
+                value = userWithChallanges?.user?.fio.toString(),
+                onValueChange = {},
+                readOnly = true,
+                label = {
+                    Text(stringResource(id = R.string.user_fio))
+                }
+            )
+            userWithChallanges?.challenges?.forEachIndexed() { _, challenge ->
+                Row {
+                    Text(text = challenge.challenge_name)
+                    if (challenge.challenge_status) {
+                        Text(text = " - Выполнено")
+                    } else {
+                        Text(text = " - В процессе")
+                    }
+                }
+            }
+        }
+    }
+
+
+@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
+@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
+@Composable
+fun PerformanceViewPreview() {
+    MyApplicationTheme {
+        Surface(
+            color = MaterialTheme.colorScheme.background
+        ) {
+            UserView(id = 0)
+        }
+    }
+}

app/src/main/java/com/example/myapplication/user/composeui/UsersList.kt

@@ -0,0 +1,75 @@
+package com.example.myapplication.user.composeui
+
+import android.content.res.Configuration
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
+import com.example.myapplication.composeui.navigation.Screen
+import com.example.myapplication.database.AppDatabase
+import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.user.model.User
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.withContext
+
+@Composable
+fun UsersList(navController: NavController?) {
+    val context = LocalContext.current;
+    val users = remember { mutableStateListOf<User>() }
+    LaunchedEffect(Unit) {
+        withContext(Dispatchers.IO) {
+            AppDatabase.getInstance(context).userDao().getAll().collect { data ->
+                users.clear()
+                users.addAll(data)
+            }
+        }
+    }
+    Column(
+        horizontalAlignment = Alignment.CenterHorizontally,
+        modifier = Modifier
+            .padding(all = 10.dp)
+            .verticalScroll(rememberScrollState())) {
+        users.forEachIndexed() { _, user ->
+            val userId = Screen.UserView.route.replace("{id}", (user.uid).toString())
+            Row(Modifier.padding(all = 10.dp)) {
+                Button(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(all = 10.dp),
+                    onClick = { navController?.navigate(userId) }) {
+                    Text(user.fio)
+                }
+            }
+        }
+    }
+}
+
+@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
+@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
+@Composable
+fun UserPreview() {
+    MyApplicationTheme {
+        Surface(
+            color = MaterialTheme.colorScheme.background
+        ) {
+            UsersList(navController = null)
+        }
+    }
+}

app/src/main/java/com/example/myapplication/user/dao/UserDao.kt

@@ -0,0 +1,28 @@
+package com.example.myapplication.user.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Update
+import com.example.myapplication.user.model.User
+import com.example.myapplication.user.model.UserWithChallenges
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface UserDao {
+    @Query("select * from users order by fio asc")
+    fun getAll(): Flow<List<User>>
+
+    @Query("select * from users where users.uid = :uid")
+    suspend fun getByUid(uid: Int): UserWithChallenges
+
+    @Insert
+    suspend fun insert(user: User)
+
+    @Update
+    suspend fun update(user: User)
+
+    @Delete
+    suspend fun delete(user: User)
+}

app/src/main/java/com/example/myapplication/user/model/User.kt

@@ -0,0 +1,13 @@
+package com.example.myapplication.user.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.example.myapplication.challenge.model.Challenge
+
+@Entity(tableName = "users")
+data class User(
+    @PrimaryKey val uid: Int,
+    val login: String,
+    val password: String,
+    val fio: String,
+)

app/src/main/java/com/example/myapplication/user/model/UserWithChallenges.kt

@@ -0,0 +1,15 @@
+package com.example.myapplication.user.model
+
+import androidx.room.Embedded
+import androidx.room.Relation
+import com.example.myapplication.challenge.model.Challenge
+import com.example.myapplication.user.model.User
+
+data class UserWithChallenges(
+    @Embedded val user: User,
+    @Relation(
+        parentColumn = "uid",
+        entityColumn = "user_id"
+    )
+    val challenges: List<Challenge>
+)

app/src/main/res/values/strings.xml

@@ -1,3 +1,18 @@
 <resources>
     <string name="app_name">My Application</string>
+    <string name="about_main_title">О нас</string>
+    <string name="user_list">Пользователи</string>
+    <string name="categories_list">Категории</string>
+    <string name="about_text">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
+        eiusmod tempor incididunt ut labore et dolore magna aliqua. Volutpat odio facilisis
+        mauris sit amet massa vitae. Arcu dui vivamus arcu felis bibendum ut tristique.
+        Leo in vitae turpis massa sed elementum. Tristique sollicitudin nibh sit amet commodo.
+        Donec ultrices tincidunt arcu non sodales neque sodales. Convallis aenean et tortor at.
+        Nisi est sit amet facilisis magna etiam tempor orci. Dignissim diam quis enim lobortis.
+        Lacus laoreet non curabitur gravida. Netus et malesuada fames ac turpis egestas maecenas.
+        Ornare aenean euismod elementum nisi quis eleifend. Elit sed vulputate mi sit. Sit amet
+        justo donec enim diam vulputate ut. Laoreet non curabitur gravida arcu.</string>
+    <string name="user_login">Логин</string>
+    <string name="user_fio">ФИО</string>
+    <string name="user_view_title">Пользователь</string>
 </resources>

build.gradle.kts

@@ -2,4 +2,5 @@
 plugins {
     id("com.android.application") version "8.1.1" apply false
     id("org.jetbrains.kotlin.android") version "1.8.10" apply false
+    id("com.google.devtools.ksp") version "1.8.20-1.0.11" apply false
 }