я не знаю каким чудом, но я сделал добавление

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

@@ -59,12 +59,12 @@ abstract class AppDatabase : RoomDatabase() {
             userDao.insertUser(user2)
 
             // Создание велосипедов
-            val bicycle1 = Bicycle(1, "Trek", "Велосипед 1", "Black", 1)
+            val bicycle1 = Bicycle(brand = "Trek", model = "Велосипед 1", color = "Black", userId = null, id = null)
-            val bicycle2 = Bicycle(2, "Giant", "Велосипед 2", "Blue", 2)
+            val bicycle2 = Bicycle(brand = "Trek", model = "Велосипед 2", color = "Black", userId = null, id = null)
-            val bicycle3 = Bicycle(3, "Trek", "Велосипед 3", "Black", 1)
+            val bicycle3 = Bicycle(brand = "Trek", model = "Велосипед 3", color = "Black", userId = null, id = null)
-            val bicycle4 = Bicycle(4, "Giant", "Велосипед 4", "Blue", 2)
+            val bicycle4 = Bicycle(brand = "Trek", model = "Велосипед 4", color = "Black", userId = null, id = null)
-            val bicycle5 = Bicycle(5, "Trek", "Велосипед 5", "Black", 1)
+            val bicycle5 = Bicycle(brand = "Trek", model = "Велосипед 5", color = "Black", userId = null, id = null)
-            val bicycle6 = Bicycle(6, "Giant", "Велосипед 6", "Blue", 2)
+            val bicycle6 = Bicycle(brand = "Trek", model = "Велосипед 6", color = "Black", userId = null, id = null)
 
             // Вставка велосипедов в базу данных
             bicycleDao.insertBicycle(bicycle1)

app/src/main/java/com/example/labwork/models/Bicycle.kt

@@ -5,9 +5,10 @@ import androidx.room.PrimaryKey
 
 @Entity(tableName = "bicycles")
 data class Bicycle(
-    @PrimaryKey val id: Int,
+    @PrimaryKey(autoGenerate = true)
+    val id: Int?,
     val brand: String,
     val model: String,
     val color: String,
-    val userId: Int
+    val userId: Int?
 )

app/src/main/java/com/example/labwork/pages/ListProduct.kt

@@ -19,6 +19,8 @@ import androidx.compose.material.Button
 import androidx.compose.material.ButtonDefaults
 import androidx.compose.material.Card
 import androidx.compose.material.Text
+import androidx.compose.material.TextField
+import androidx.compose.material.TextFieldDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -50,6 +52,112 @@ fun ListProduct(item: Bicycle, bicycleDao: BicycleDao, navHostController: NavHos
     var isFullAbout by remember { mutableStateOf(false) }
     val scale by animateFloatAsState(if (isFullAbout) 1f else 0f)
     val textSize by animateDpAsState(if (isFullAbout) 18.dp else 24.dp)
+    val isFormVisible = remember { mutableStateOf(false) }
+    var brand by remember { mutableStateOf("") }
+    var model by remember { mutableStateOf("") }
+    var color by remember { mutableStateOf("") }
+
+// Внутри вашего кода Composable обработчик нажатия кнопки "Добавить"
+    Button(
+        colors = ButtonDefaults.buttonColors(backgroundColor = LightBluePolitech),
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(9.dp),
+        onClick = {
+            // Установите значение состояния открытия формы как true
+            isFormVisible.value = true
+        },
+        shape = RoundedCornerShape(15.dp)
+    ) {
+        Text(
+            text = "Добавить",
+            color = Color.White,
+            fontSize = 10.sp,
+            textAlign = TextAlign.Center
+        )
+    }
+
+// После кнопки "Добавить" добавьте код, который будет отображать форму при isFormVisible равном true
+    if (isFormVisible.value) {
+        Column(
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            // Поле ввода для бренда
+            TextField(
+                value = brand,
+                onValueChange = { brand = it },
+                placeholder = { Text("Бренд") },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp, vertical = 8.dp),
+                colors = TextFieldDefaults.textFieldColors(backgroundColor = Color.White)
+            )
+
+            // Поле ввода для модели
+            TextField(
+                value = model,
+                onValueChange = { model = it },
+                placeholder = { Text("Модель") },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp, vertical = 8.dp),
+                colors = TextFieldDefaults.textFieldColors(backgroundColor = Color.White)
+            )
+
+            // Поле ввода для цвета
+            TextField(
+                value = color,
+                onValueChange = { color = it },
+                placeholder = { Text("Цвет") },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp, vertical = 8.dp),
+                colors = TextFieldDefaults.textFieldColors(backgroundColor = Color.White)
+            )
+
+            Button(
+                colors = ButtonDefaults.buttonColors(backgroundColor = LightBluePolitech),
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(9.dp),
+                onClick = {
+                    GlobalScope.launch {
+                        val newBicycle = Bicycle(null, brand, model, color, null)
+                        bicycleDao.insertBicycle(newBicycle)
+                    }
+                    isFormVisible.value = false
+                    navHostController.navigate("ListProduct")
+                },
+                shape = RoundedCornerShape(15.dp)
+            ) {
+                Text(
+                    text = "Принять",
+                    color = Color.White,
+                    fontSize = 10.sp,
+                    textAlign = TextAlign.Center
+                )
+            }
+            Button(
+                colors = ButtonDefaults.buttonColors(backgroundColor = LightBluePolitech),
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(9.dp),
+                onClick = {
+                    isFormVisible.value = false
+                    navHostController.navigate("ListProduct")
+                },
+                shape = RoundedCornerShape(15.dp)
+            ) {
+                Text(
+                    text = "Отменить",
+                    color = Color.White,
+                    fontSize = 10.sp,
+                    textAlign = TextAlign.Center
+                )
+            }
+        }
+
+    }
 
     Card(
         modifier = Modifier