3-ая вроде сделал

.idea/kotlinc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.8.10" />
+    <option name="version" value="1.8.20" />
   </component>
 </project>

app/build.gradle.kts

@@ -1,16 +1,19 @@
+import org.jetbrains.kotlin.kapt3.base.Kapt.kapt
+
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
+    id("com.google.devtools.ksp")
 }
 
 android {
     namespace = "com.example.myapplication"
-    compileSdk = 33
+    compileSdk = 34
 
     defaultConfig {
         applicationId = "com.example.myapplication"
         minSdk = 24
-        targetSdk = 33
+        targetSdk = 34
         versionCode = 1
         versionName = "1.0"
 
@@ -30,17 +33,17 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = "17"
     }
     buildFeatures {
         compose = true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion = "1.4.3"
+        kotlinCompilerExtensionVersion = "1.4.5"
     }
     packaging {
         resources {
@@ -49,11 +52,12 @@ android {
     }
 }
 
+
 dependencies {
 
     implementation("androidx.core:core-ktx:1.9.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
-    implementation("androidx.activity:activity-compose:1.7.2")
+    implementation("androidx.activity:activity-compose:1.8.1")
     implementation(platform("androidx.compose:compose-bom:2023.03.00"))
     implementation("androidx.compose.ui:ui")
     implementation("androidx.compose.ui:ui-graphics")
@@ -67,4 +71,13 @@ dependencies {
     androidTestImplementation("androidx.compose.ui:ui-test-junit4")
     debugImplementation("androidx.compose.ui:ui-tooling")
     debugImplementation("androidx.compose.ui:ui-test-manifest")
+
+
+    // 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")
 }

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

@@ -19,12 +19,14 @@ import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -41,11 +43,14 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.navigation.compose.NavHost
 import androidx.navigation.NavHostController
+import androidx.navigation.NavType
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
+import com.example.myapplication.database.MobileAppDataBase
 import com.example.myapplication.screens.Authorization
-import com.example.myapplication.screens.CreateCard
-import com.example.myapplication.screens.EditCard
+import com.example.myapplication.screens.EditCardScreen
+import com.example.myapplication.screens.EditUserScreen
 import com.example.myapplication.ui.theme.MyApplicationTheme
 import com.example.myapplication.screens.MainScreen
 import com.example.myapplication.screens.Registration
@@ -69,11 +74,13 @@ class MainActivity : ComponentActivity() {
     }
 }
 
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun AppNavigation(navController: NavHostController){
     NavHost(
         navController = navController, startDestination = "authorization"
     ) {
+
         composable("authorization") {
             Authorization(navController = navController)
         }
@@ -83,14 +90,22 @@ fun AppNavigation(navController: NavHostController){
         composable("registration") {
             Registration(navController = navController)
         }
-        composable("createCard") {
-            CreateCard(navController = navController)
-        }
         composable("userSettings") {
             UserSettings(navController = navController)
         }
-        composable("editCard") {
-            EditCard(navController = navController)
+        composable("editcard") {
+            EditCardScreen(navController = navController)
+        }
+        composable(
+            "editcard/{id}",
+            arguments = listOf(navArgument("id") { type = NavType.IntType }) //С аргументом
+        ) { backStackEntry ->
+            backStackEntry.arguments?.let {
+                EditCardScreen(navController = navController, cardId = it.getInt("id"))
+            }
+        }
+        composable("edituser"){
+            EditUserScreen(navController = navController)
         }
     }
 }

app/src/main/java/com/example/myapplication/components/InputContent.kt

@@ -0,0 +1,69 @@
+package com.example.myapplication.components
+
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.requiredHeight
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+
+val buttonHeightStandard = 72.dp
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun PlaceholderInputField(label: String, startValue: String? = null, isSingleLine: Boolean, onTextChanged: (String) -> Unit){
+    var text = remember { mutableStateOf("") }
+    startValue?.let{
+        text.value = startValue
+    }
+    Text(
+        modifier = Modifier.padding(horizontal = 8.dp),
+        text = label,
+        fontSize = 20.sp
+    )
+    OutlinedTextField(
+        value = text.value,
+        onValueChange = {
+            text.value = it
+            onTextChanged(it)
+        },
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(top = 8.dp, start = 16.dp, bottom = 8.dp, end = 16.dp),
+        shape = RoundedCornerShape(10.dp),
+        singleLine = isSingleLine
+    )
+}
+
+@Composable
+fun ActiveButton(label: String, backgroundColor: Color, textColor: Color, onClickAction: () -> Unit){
+    Button(
+        onClick = onClickAction,
+        modifier = Modifier
+            .fillMaxWidth()
+            .requiredHeight(buttonHeightStandard)
+            .padding(top = 8.dp, start = 16.dp, bottom = 8.dp, end = 16.dp),
+        colors = ButtonDefaults.buttonColors(
+            containerColor = backgroundColor
+        ),
+        shape = RoundedCornerShape(10.dp)
+    ) {
+        Text(
+            text = label,
+            fontSize = 20.sp,
+            fontWeight = FontWeight.Bold,
+            color = textColor
+        )
+    }
+}

app/src/main/java/com/example/myapplication/components/navBar.kt

@@ -41,7 +41,7 @@ fun navBar(navController: NavHostController) {
         verticalAlignment = Alignment.CenterVertically
     ) {
         navItem(navController = navController, ImageId = R.drawable.home_image, "mainScreen")
-        navItem(navController = navController, ImageId = R.drawable.note_image, "createCard")
+        navItem(navController = navController, ImageId = R.drawable.note_image, "editcard")
         navItem(navController = navController, ImageId = R.drawable.profile_image, "userSettings")
     }
 }

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

@@ -0,0 +1,89 @@
+package com.example.myapplication.database
+
+import android.content.Context
+import android.graphics.BitmapFactory
+import android.util.Log
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverters
+import androidx.sqlite.db.SupportSQLiteDatabase
+import com.example.myapplication.R
+import com.example.myapplication.database.entities.ImageConverter
+import com.example.myapplication.database.dao.CardDao
+import com.example.myapplication.database.dao.UserDao
+import com.example.myapplication.database.entities.Card
+import com.example.myapplication.database.entities.User
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+@Database(entities = [User::class, Card::class], version = 1, exportSchema = false)
+@TypeConverters(ImageConverter::class)
+abstract class MobileAppDataBase : RoomDatabase() {
+    abstract fun userDao(): UserDao
+    abstract fun cardDao(): CardDao
+
+    companion object {
+        private const val DB_NAME: String = "my-db.db"
+
+        @Volatile
+        private var INSTANCE: MobileAppDataBase? = null
+
+        fun getInstance(appContext: Context): MobileAppDataBase {
+            return INSTANCE ?: synchronized(this) {
+                Room.databaseBuilder(
+                    appContext,
+                    MobileAppDataBase::class.java,
+                    DB_NAME
+                )
+                    .addCallback(object : Callback() {
+                        override fun onCreate(db: SupportSQLiteDatabase) {
+                            super.onCreate(db)
+                            CoroutineScope(Dispatchers.IO).launch {
+                                initialDataBase(appContext)
+                            }
+                        }
+                    })
+                    .build()
+                    .also { INSTANCE = it }
+            }
+        }
+
+        private suspend fun initialDataBase(appContext: Context) {
+            INSTANCE?.let { database ->
+                val userDao = database.userDao()
+                userDao.insert(User(id = 1, login = "Иван", password = "1234",))
+                userDao.insert(User(id = 2, login = "Леонель Месси", password = "4321",))
+
+                val cardDao = database.cardDao()
+                cardDao.insert(
+                    Card(
+                        name = "Феррари Имба",
+                        location = "г. Ульяновск",
+                        image = BitmapFactory.decodeResource(
+                            appContext.resources,
+                            R.drawable.ferrari_laferrari_car2
+                        ),
+                        mileage = 7322,
+                        price = 125000,
+                        userId = 1
+                    )
+                )
+                cardDao.insert(
+                    Card(
+                        name = "Феррари Два",
+                        location = "г. Ульяновск",
+                        image = BitmapFactory.decodeResource(
+                            appContext.resources,
+                            R.drawable.ferrari_laferrari_car2
+                        ),
+                        mileage = 1233,
+                        price = 15000,
+                        userId = 2
+                    )
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/dao/CardDao.kt

@@ -0,0 +1,31 @@
+package com.example.myapplication.database.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import androidx.room.Update
+import com.example.myapplication.database.entities.Card
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface CardDao {
+    @Query("select * from cards")
+    fun getAll(): Flow<List<Card>>
+
+    @Query("select * from cards where cards.id = :id")
+    fun getById(id: Int): Card?
+
+    @Query("select * from cards where cards.user_id = :userId")
+    fun getByUserId(userId: Int): Flow<List<Card>>
+
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    suspend fun insert(card: Card)
+
+    @Update
+    suspend fun update(card: Card)
+
+    @Delete
+    suspend fun delete(card: Card)
+}

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

@@ -0,0 +1,32 @@
+package com.example.myapplication.database.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Embedded
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import androidx.room.Relation
+import androidx.room.Transaction
+import androidx.room.Update
+import com.example.myapplication.database.entities.Card
+import com.example.myapplication.database.entities.User
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface UserDao {
+    @Query("select * from users")
+    fun getAll(): Flow<List<User>>
+
+    @Query("select * from users where users.id = :id")
+    fun getById(id: Int): User?
+
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    suspend fun insert(user: User)
+
+    @Update
+    suspend fun update(user: User)
+
+    @Delete
+    suspend fun delete(user: User)
+}

app/src/main/java/com/example/myapplication/database/entities/Card.kt

@@ -0,0 +1,40 @@
+package com.example.myapplication.database.entities
+
+import android.graphics.Bitmap
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.PrimaryKey
+
+@Entity(
+    tableName = "cards",
+    foreignKeys = [
+        ForeignKey(
+            entity = User::class,
+            parentColumns = ["id"],
+            childColumns = ["user_id"],
+            onDelete = ForeignKey.RESTRICT,
+            onUpdate = ForeignKey.RESTRICT
+        )
+    ]
+)
+data class Card(
+    @PrimaryKey(autoGenerate = true)
+    val id: Int? = null,
+    @ColumnInfo(name = "name")
+    val name: String,
+    @ColumnInfo(name = "location")
+    val location: String,
+    @ColumnInfo(name = "mileage")
+    val mileage: Int,
+    @ColumnInfo(name = "price")
+    val price: Int,
+    @ColumnInfo(name = "image")
+    val image: Bitmap,
+    @ColumnInfo(name="user_id")
+    val userId: Int
+){
+    override fun hashCode(): Int {
+        return id ?: -1
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/ImageConverter.kt

@@ -0,0 +1,20 @@
+package com.example.myapplication.database.entities
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import androidx.room.TypeConverter
+import java.io.ByteArrayOutputStream
+
+class ImageConverter {
+    @TypeConverter
+    fun fromBitmap(bitmap: Bitmap) : ByteArray {
+        val outputStream = ByteArrayOutputStream();
+        bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream)
+        return outputStream.toByteArray()
+    }
+
+    @TypeConverter
+    fun toBitmap(byteArray: ByteArray): Bitmap {
+        return BitmapFactory.decodeByteArray(byteArray, 0, byteArray.size)
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/User.kt

@@ -0,0 +1,19 @@
+package com.example.myapplication.database.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "users")
+data class User(
+    @PrimaryKey(autoGenerate = true)
+    val id: Int? = null,
+    @ColumnInfo(name = "login")
+    val login: String,
+    @ColumnInfo(name = "password")
+    val password: String,
+){
+    override fun hashCode(): Int {
+        return id ?: -1
+    }
+}

app/src/main/java/com/example/myapplication/screens/authorization.kt

@@ -1,5 +1,6 @@
 package com.example.myapplication.screens
 
+import android.util.Log
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -12,10 +13,14 @@ import androidx.compose.foundation.layout.size
 import androidx.compose.material3.OutlinedTextField
 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.graphics.Color
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
@@ -26,9 +31,27 @@ import com.example.myapplication.R
 import com.example.myapplication.components.LoginField
 import com.example.myapplication.components.PasswordField
 import com.example.myapplication.components.navButton
+import com.example.myapplication.database.MobileAppDataBase
+import com.example.myapplication.database.entities.Card
+import com.example.myapplication.database.entities.User
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @Composable
 fun Authorization(navController: NavHostController){
+    val context = LocalContext.current
+    val users = remember { mutableStateListOf<User>() }
+
+    LaunchedEffect(Unit) {
+        withContext(Dispatchers.IO) {
+            val database = MobileAppDataBase.getInstance(context)
+            database.userDao().getAll().collect { data ->
+                users.clear()
+                data.forEach { users.add(it) }
+            }
+        }
+    }
+
     Column (
         modifier = Modifier
             .fillMaxSize()

app/src/main/java/com/example/myapplication/screens/createcard.kt

@@ -1,50 +0,0 @@
-package com.example.myapplication.screens
-
-import android.view.Display.Mode
-import androidx.compose.foundation.background
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.fillMaxHeight
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.material3.Button
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.navigation.NavController
-import androidx.navigation.NavHostController
-import com.example.myapplication.components.LoginField
-import com.example.myapplication.components.navBar
-import com.example.myapplication.components.navButton
-import com.example.myapplication.ui.theme.SkyBlue
-
-@Composable
-fun CreateCard(navController: NavHostController) {
-    Column {
-        Box (modifier = Modifier.fillMaxHeight(0.9f)) {
-            Column(
-                modifier = Modifier.fillMaxWidth(),
-                horizontalAlignment = Alignment.CenterHorizontally
-            ) {
-                Button(onClick = { /*TODO*/ }) {
-                    Text("Добавить картинку")
-                }
-                LoginField(text = "Название/Марка")
-                LoginField(text = "Пробег")
-                LoginField(text = "Расположение")
-                LoginField(text = "Цена")
-                Button(onClick = { /*TODO*/ }) {
-                    Text("Создать объявление")
-                }
-            }
-        }
-        Column(modifier = Modifier
-            .fillMaxSize()
-            .background(SkyBlue),
-            verticalArrangement = Arrangement.Center) {
-            navBar(navController = navController)
-        }
-    }
-}

app/src/main/java/com/example/myapplication/screens/editcard.kt

@@ -1,50 +1,223 @@
 package com.example.myapplication.screens
 
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.graphics.ImageDecoder
+import android.net.Uri
+import android.os.Build
+import android.provider.MediaStore
 import android.view.Display.Mode
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.scrollable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.Button
 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.graphics.Color
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
 import androidx.navigation.NavHostController
+import com.example.myapplication.R
+import com.example.myapplication.components.ActiveButton
 import com.example.myapplication.components.LoginField
+import com.example.myapplication.components.PlaceholderInputField
 import com.example.myapplication.components.navBar
 import com.example.myapplication.components.navButton
+import com.example.myapplication.database.MobileAppDataBase
+import com.example.myapplication.database.entities.Card
 import com.example.myapplication.ui.theme.SkyBlue
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @Composable
-fun EditCard(navController: NavHostController) {
-    Column {
-        Box (modifier = Modifier.fillMaxHeight(0.9f)) {
+fun EditCardScreen(navController: NavHostController, cardId: Int? = null) {
+    val context = LocalContext.current
+
+    val image = remember { mutableStateOf<Bitmap>(BitmapFactory.decodeResource(context.resources, R.drawable.ferrari_laferrari_car2)) }
+    val name = remember { mutableStateOf("") }
+    val location = remember { mutableStateOf("") }
+    val price = remember { mutableStateOf(0) }
+    val mileage = remember { mutableStateOf(0) }
+
+    val imageData = remember { mutableStateOf<Uri?>(null) }
+    val launcher =
+        rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) { uri: Uri? ->
+            imageData.value = uri
+        }
+    imageData.value?.let {
+        if (Build.VERSION.SDK_INT < 28) {
+            image.value = MediaStore.Images
+                .Media.getBitmap(context.contentResolver, imageData.value)
+
+        } else {
+            val source = ImageDecoder
+                .createSource(context.contentResolver, imageData.value!!)
+            image.value = ImageDecoder.decodeBitmap(source)
+        }
+    }
+
+    cardId?.let{
+        LaunchedEffect(Unit) {
+            withContext(Dispatchers.IO) {
+                val card = MobileAppDataBase.getInstance(context).cardDao().getById(cardId!!)
+                image.value = card!!.image
+                name.value = card!!.name
+                location.value = card!!.location
+                price.value = card!!.price
+                mileage.value = card!!.mileage
+            }
+        }
+    }
+
+    val edit = remember { mutableStateOf(false) }
+    if (edit.value){
+        LaunchedEffect(Unit) {
+            withContext(Dispatchers.IO) {
+                cardId?.let {
+                    MobileAppDataBase.getInstance(context).cardDao()
+                        .update(
+                            Card(
+                                id = cardId,
+                                name = name.value,
+                                location = location.value,
+                                price = price.value,
+                                mileage = mileage.value,
+                                image = image.value,
+                                userId = 1)
+                        )
+
+                } ?: run {
+                    MobileAppDataBase.getInstance(context).cardDao()
+                        .insert(
+                            Card(
+                                name = name.value,
+                                location = location.value,
+                                price = price.value,
+                                mileage = mileage.value,
+                                image = image.value,
+                                userId = 1)
+                        )
+                }
+            }
+        }
+        edit.value = !edit.value
+        navController.navigate("mainScreen")
+    }
+
     Column(
-                modifier = Modifier.fillMaxWidth(),
-                horizontalAlignment = Alignment.CenterHorizontally
-            ) {
-                Button(onClick = { /*TODO*/ }) {
-                    Text("Добавить картинку")
-                }
-                LoginField(text = "Название/Марка")
-                LoginField(text = "Пробег")
-                LoginField(text = "Расположение")
-                LoginField(text = "Цена")
-                Button(onClick = { /*TODO*/ }) {
-                    Text("Изменить объявление")
-                }
-            }
-        }
-        Column(modifier = Modifier
+        modifier = Modifier
             .fillMaxSize()
-            .background(SkyBlue),
-            verticalArrangement = Arrangement.Center) {
-            navBar(navController = navController)
+            .padding(bottom = 8.dp)
+            .verticalScroll(rememberScrollState()),
+        verticalArrangement = Arrangement.Bottom,
+
+    ) {
+        Image(
+            bitmap = image.value.asImageBitmap(),
+            contentDescription = "editplaceholder",
+            contentScale = ContentScale.Crop,
+            modifier = Modifier
+                .size(384.dp)
+                .padding(8.dp)
+                .align(Alignment.CenterHorizontally))
+        ActiveButton(label = "Выбрать обложку", backgroundColor = SkyBlue, textColor = Color.Black, onClickAction = {
+            launcher.launch("image/*")
+        })
+        PlaceholderInputField(label = "Название", isSingleLine = true,
+            startValue = name.value, onTextChanged = { newName ->
+                name.value = newName
+            })
+        PlaceholderInputField(label = "Расположение", isSingleLine = true,
+            startValue = location.value, onTextChanged = { newLocation ->
+                location.value = newLocation
+            })
+        PlaceholderInputField(label = "Пробег", isSingleLine = true,
+            startValue = mileage.value.toString(), onTextChanged = { newMileage ->
+                mileage.value = newMileage.toIntOrNull() ?: 500
+            })
+        PlaceholderInputField(label = "Цена", isSingleLine = true,
+            startValue = price.value.toString(), onTextChanged = { newPrice ->
+                price.value = newPrice.toIntOrNull() ?: 10000
+            })
+        ActiveButton(label = "Сохранить", backgroundColor = SkyBlue, textColor = Color.Black, onClickAction = {
+            edit.value = !edit.value
+        })
+        navButton(navController = navController, destination = "mainScreen", label = "Назад", backgroundColor = SkyBlue, textColor = Color.Black)
     }
 }
+
+@Composable
+fun EditUserScreen(navController: NavHostController){
+    val context = LocalContext.current
+
+    val photo = remember { mutableStateOf<Bitmap>(BitmapFactory.decodeResource(context.resources, R.drawable.login)) }
+    val name = remember { mutableStateOf("") }
+    val password = remember { mutableStateOf("") }
+
+    val imageData = remember { mutableStateOf<Uri?>(null) }
+    val launcher =
+        rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) {uri: Uri? ->
+            imageData.value = uri
+        }
+    imageData.value?.let {
+        if (Build.VERSION.SDK_INT < 28) {
+            photo.value = MediaStore.Images
+                .Media.getBitmap(context.contentResolver, imageData.value)
+
+        } else {
+            val source = ImageDecoder
+                .createSource(context.contentResolver, imageData.value!!)
+            photo.value = ImageDecoder.decodeBitmap(source)
+        }
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(bottom = 8.dp),
+        verticalArrangement = Arrangement.Bottom
+    ) {
+        Image(
+            bitmap = photo.value.asImageBitmap(),
+            contentDescription = "editplaceholder",
+            contentScale = ContentScale.Crop,
+            modifier = Modifier
+                .size(384.dp)
+                .padding(8.dp)
+                .align(Alignment.CenterHorizontally))
+        ActiveButton(label = "Выбрать фото", backgroundColor = SkyBlue, textColor = Color.Black, onClickAction = {
+            launcher.launch("image/*")
+        })
+        PlaceholderInputField(label = "Никнейм", isSingleLine = true,
+            startValue = name.value, onTextChanged = { newName ->
+                name.value = newName
+            })
+        PlaceholderInputField(label = "Пароль", isSingleLine = true,
+            startValue = password.value, onTextChanged = { newPassword ->
+                password.value = newPassword
+            })
+        ActiveButton(label = "Сохранить", backgroundColor = SkyBlue, textColor = Color.Black, onClickAction = {
+            //edit.value = !edit.value
+        })
+    }
 }

app/src/main/java/com/example/myapplication/screens/mainScreen.kt

@@ -1,9 +1,30 @@
 package com.example.myapplication.screens
 
+import android.util.Log
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+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.graphics.Color
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavHostController
+import com.example.myapplication.components.navBar
+import com.example.myapplication.database.entities.Card
+import com.example.myapplication.ui.theme.SkyBlue
+import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -11,132 +32,258 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.requiredHeight
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.rememberScrollState
-import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardDefaults
 import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.Shape
-import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.res.painterResource
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import androidx.navigation.NavHostController
-import com.example.myapplication.components.navBar
-import com.example.myapplication.ui.theme.SkyBlue
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.sp
+import com.example.myapplication.R
+import com.example.myapplication.database.MobileAppDataBase
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 @Composable
 fun MainScreen(navController: NavHostController) {
+    val context = LocalContext.current
+    val cards = remember { mutableStateListOf<Card>() }
+
+    LaunchedEffect(Unit) {
+        withContext(Dispatchers.IO) {
+            val database = MobileAppDataBase.getInstance(context)
+            database.cardDao().getAll().collect { data ->
+                cards.clear()
+                data.forEach { cards.add(it) }
+            }
+        }
+    }
+    
     Column {
         Box(modifier = Modifier
             .padding(horizontal = 10.dp)
             .fillMaxHeight(0.9f)) {
+            Column()
+            {
+                DataListScroll(navController, cards)
+            }
+        }
         Column(
-                modifier = Modifier.verticalScroll(rememberScrollState())
+            modifier = Modifier
+                .fillMaxWidth()
+                .background(SkyBlue)
+                .weight(1f),
+            verticalArrangement = Arrangement.Center
         ) {
-                ListItem(
-                    name = "Ламборджини Авентадор 2010",
-                    mileage = 4765,
-                    location = "Россия, г. Ульяновск",
-                    price = 5000000,
-                    imageResourceId = com.example.myapplication.R.drawable.lambo_car1,
-                    navController = navController
-                )
-                ListItem(
-                    name = "Оранжевый Москвич 1983",
-                    mileage = 522011,
-                    location = "Россия, г. Москва",
-                    price = 125000,
-                    imageResourceId = com.example.myapplication.R.drawable.moscowich_car3,
-                    navController = navController
-                )
-                ListItem(
-                    name = "Феррари Лаферрари 2013",
-                    mileage = 17698,
-                    location = "Италия, г. Неаполь",
-                    price = 1249990,
-                    imageResourceId = com.example.myapplication.R.drawable.ferrari_laferrari_car2,
-                    navController = navController
-                )
-                ListItem(
-                    name = "Оранжевый Москвич 1983",
-                    mileage = 522011,
-                    location = "Россия, г. Москва",
-                    price = 125000,
-                    imageResourceId = com.example.myapplication.R.drawable.moscowich_car3,
-                    navController = navController
-                )
-                ListItem(
-                    name = "Феррари Лаферрари 2013",
-                    mileage = 17698,
-                    location = "Италия, г. Неаполь",
-                    price = 1249990,
-                    imageResourceId = com.example.myapplication.R.drawable.ferrari_laferrari_car2,
-                    navController = navController
-                )
-            }
-        }
-        Column(modifier = Modifier
-            .fillMaxSize()
-            .background(SkyBlue),
-            verticalArrangement = Arrangement.Center) {
             navBar(navController = navController)
         }
     }
 }
 
 @Composable
-private fun ListItem(name: String,
-                     mileage: Int,
-                     location: String,
-                     price: Int,
-                     imageResourceId: Int,
-                     navController: NavHostController) {
-    var borderColor = remember { mutableStateOf(Color.Gray) }
+fun <T : Any> DataListScroll(navController: NavHostController, dataList: List<T>){
+    LazyColumn(
+        horizontalAlignment = Alignment.CenterHorizontally,
+        modifier = Modifier
+            .fillMaxWidth()
+    ){
+        item {
+            when {
+                dataList.isListOf<Card>() -> addNewListItem(navController, "editcard")
+
+            }
+        }
+        items(dataList){ item ->
+            when(item){
+                is Card -> CardListItem(item = item, navController = navController)
+            }
+        }
+    }
+}
+
+inline fun <reified T> List<*>.isListOf(): Boolean {
+    return isNotEmpty() && all { it is T }
+}
+
+
+@Composable
+fun CardListItem(item: Card, navController: NavHostController){
+    val context = LocalContext.current
+
+    val showDialog = remember {
+        mutableStateOf(false)
+    }
+
+    val delete = remember {
+        mutableStateOf(false)
+    }
 
     Card(
         modifier = Modifier
             .fillMaxWidth()
             .padding(10.dp)
-            .border(2.dp, borderColor.value, RoundedCornerShape(15.dp))
-            .clickable { borderColor.value = Color.LightGray },
+            .border(2.dp, Color.Gray, RoundedCornerShape(15.dp)),
         shape = RoundedCornerShape(15.dp),
-        elevation = CardDefaults.cardElevation(defaultElevation = 5.dp),
+        elevation = CardDefaults.cardElevation(defaultElevation = 5.dp)
     ) {
-        Box() {
-            Row(verticalAlignment = Alignment.CenterVertically){
-                Image(
-                    painter = painterResource(id = imageResourceId),
-                    contentDescription = "image",
-                    contentScale = ContentScale.Crop,
-                    modifier = Modifier.size(128.dp))
         Column(
-                    modifier = Modifier.padding(5.dp)) {
-                    Text(text = name, fontFamily = FontFamily.SansSerif, fontWeight = FontWeight.Bold)
-                    Text(text = "Пробег: " + mileage)
-                    Text(text = "Расположение: " + location)
-                    Text(text = "Цена: " + price)
-                    Button(onClick = { navController.navigate("editCard") }) {
-                        Text("Изменить")
+            modifier = Modifier.fillMaxSize()
+        ) {
+            Row(
+                verticalAlignment = Alignment.Top
+            ){
+                Image(bitmap = item.image.asImageBitmap(),
+                    contentDescription = item.name,
+                    contentScale = ContentScale.Crop,
+                    modifier = Modifier
+                        .width(128.dp)
+                        .height(256.dp))
+                Column (
+                    modifier = Modifier.padding(8.dp)
+                ){
+                    Text(
+                        text = "Название: ${item.name} \nРасположение: ${item.location} \nПробег: ${item.mileage} \nЦена: ${item.price}",
+                        fontSize = 20.sp,
+                        fontWeight = FontWeight.Bold
+                    )
+                    DataListItemButton("Изменить", Color.LightGray, Color.White, onClickAction = {
+                        navController.navigate("editcard/${item.id}")
+                    })
+                    DataListItemButton("Удалить", Color.Black, Color.White, onClickAction = {
+                        showDialog.value = !showDialog.value
+                    })
                 }
-                    Button(onClick = { }) {
-                        Text("Удалить")
             }
         }
     }
 
+    if(showDialog.value) {
+        DialogWindow(label = "Подтверждение",
+            message = "Вы уверены что хотите удалить запись?", onConfirmAction = {
+                delete.value = !delete.value
+                showDialog.value = !showDialog.value
+            }, onDismissAction = {
+                showDialog.value = !showDialog.value
+            })
+    }
+
+    if(delete.value) {
+        LaunchedEffect(Unit){
+            withContext(Dispatchers.IO){
+                MobileAppDataBase.getInstance(context).cardDao().delete(item)
+            }
+        }
+        delete.value = !delete.value
+        navController.navigate("mainScreen")
+    }
+}
+
+
+@Composable
+fun DataListItemButton(label: String, backgroundColor: Color, textColor: Color, onClickAction: () -> Unit){
+    Button(
+        onClick = onClickAction,
+        modifier = Modifier.requiredHeight(64.dp),
+        shape = RoundedCornerShape(10.dp),
+        colors = ButtonDefaults.buttonColors(
+            containerColor = backgroundColor
+        )
+    ) {
+        Text(
+            text = label,
+            color = textColor,
+            fontSize = 18.sp,
+        )
+    }
+}
+
+@Composable
+fun DialogWindow(label: String, message: String, onConfirmAction: () -> Unit, onDismissAction: () -> Unit){
+    AlertDialog(onDismissRequest = onDismissAction,
+        title = {
+            Text(text = label,
+                fontSize = 20.sp,
+                fontWeight = FontWeight.Bold)
+        },
+        text = {
+            Text(text = message)
+        },
+        confirmButton = {
+            Button(
+                onClick = onConfirmAction,
+                colors = ButtonDefaults.buttonColors(
+                    containerColor = Color.Green
+                ),
+                shape = RoundedCornerShape(5.dp)
+            ) {
+                Text(text = "Подтвердить",
+                    color = Color.White)
+            }
+        },
+        dismissButton = {
+            Button(
+                onClick = onDismissAction,
+                colors = ButtonDefaults.buttonColors(
+                    containerColor = Color.Red
+                ),
+                shape = RoundedCornerShape(5.dp)
+            ) {
+                Text(text = "Отмена",
+                    color = Color.Black)
+            }
+        }
+    )
+}
+
+@Composable
+fun addNewListItem(navController: NavHostController, destination: String){
+    Card(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(start = 18.dp, top = 8.dp, end = 18.dp, bottom = 8.dp)
+            .clickable {
+                navController.navigate(destination)
+            },
+        shape = RoundedCornerShape(15.dp),
+        colors = CardDefaults.cardColors(
+            containerColor = Color.White
+        ),
+        elevation = CardDefaults.cardElevation(
+            defaultElevation = 8.dp
+        )
+    ) {
+        Column(
+            modifier = Modifier.fillMaxSize()
+        ) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                verticalAlignment = Alignment.CenterVertically
+            ){
+                Image(painter = painterResource(id = R.drawable.plus),
+                    contentDescription = "additem",
+                    contentScale = ContentScale.Crop,
+                    modifier = Modifier
+                        .size(96.dp)
+                        .padding(8.dp))
+                Text(
+                    text = "Добавить",
+                    fontSize = 28.sp,
+                    fontWeight = FontWeight.Bold,
+                    modifier = Modifier.padding(start = 32.dp))
             }
         }
     }
+}
+

app/src/main/java/com/example/myapplication/screens/user.kt

@@ -12,9 +12,15 @@ import androidx.compose.foundation.layout.size
 import androidx.compose.material3.Button
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
@@ -22,10 +28,30 @@ import androidx.navigation.NavHostController
 import com.example.myapplication.R
 import com.example.myapplication.components.LoginField
 import com.example.myapplication.components.navBar
+import com.example.myapplication.database.MobileAppDataBase
+import com.example.myapplication.database.entities.User
 import com.example.myapplication.ui.theme.SkyBlue
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @Composable
 fun UserSettings(navController: NavHostController) {
+    val context = LocalContext.current
+
+    val login = remember { mutableStateOf("") }
+    val password = remember { mutableStateOf("") }
+    val userId = 1
+
+    userId?.let {
+        LaunchedEffect(Unit) {
+            withContext(Dispatchers.IO) {
+                val user = MobileAppDataBase.getInstance(context).userDao().getById(userId!!)
+                login.value = user!!.login
+                password.value = user!!.password
+            }
+        }
+    }
+
     Column {
         Box (modifier = Modifier.fillMaxHeight(0.9f)) {
             Column(
@@ -39,10 +65,8 @@ fun UserSettings(navController: NavHostController) {
                     modifier = Modifier
                         .size(300.dp)
                 )
-                LoginField(text = "Логин пользователя")
-                LoginField(text = "Пароль пользователя")
-                LoginField(text = "Количество объявлений пользователя")
-                Button(onClick = {}) { Text("Посмотреть мои объявления") }
+                LoginField(text = "Логин пользователя: ${login.value}")
+                LoginField(text = "Пароль пользователя: ${password.value}")
             }
         }
         Column(modifier = Modifier
@@ -52,5 +76,4 @@ fun UserSettings(navController: NavHostController) {
             navBar(navController = navController)
         }
     }
-
 }

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
 }