app1

app1.kt

MainActivity.kt:

package com.iliyadev.todo2

import android.annotation.SuppressLint
import android.content.Intent
import android.os.Bundle
import android.widget.ListView
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.Observer
import androidx.lifecycle.ViewModelProvider
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.google.android.material.floatingactionbutton.FloatingActionButton

class MainActivity : AppCompatActivity() {
    private lateinit var todoViewModel: ToDoViewModel
    private lateinit var todoAdapter: ToDoAdapter

    @SuppressLint("NotifyDataSetChanged")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val recyclerView = findViewById<RecyclerView>(R.id.recyclerView)
        val layoutManager = LinearLayoutManager(this)
        val todoList = listOf(
            ToDoItem("Title 1", "Description 1"),
            ToDoItem("Title 2", "Description 2"),
            // Add more items as needed
        )
        todoAdapter = ToDoAdapter(todoList)
        recyclerView.layoutManager = layoutManager
        recyclerView.adapter = todoAdapter

        todoViewModel = ViewModelProvider(this)[ToDoViewModel::class.java]
        todoViewModel.todos.observe(this) { todos ->
            todoAdapter.todoList = todos
            todoAdapter.notifyDataSetChanged()
        }

        val fab = findViewById<FloatingActionButton>(R.id.fab)
        fab.setOnClickListener {
            val intent = Intent(this@MainActivity, AddToDoActivity::class.java)
            startActivity(intent)
        }
    }
}

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AppDatabase.kt:
package com.iliyadev.todo2

import androidx.room.Database
import androidx.room.RoomDatabase

@Database(entities = [ToDo::class], version = 1)
abstract class AppDatabase : RoomDatabase() {
    abstract fun todoDao(): ToDoDao
}
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AddToDoActivity.kt:

package com.iliyadev.todo2

import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.ViewModelProvider

class AddToDoActivity : AppCompatActivity() {
    private lateinit var todoViewModel: ToDoViewModel

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_add_todo)

        val editTextTitle = findViewById<EditText>(R.id.editTextTitle)
        val editTextDescription = findViewById<EditText>(R.id.editTextDescription)
        val buttonAddToDo = findViewById<Button>(R.id.buttonAddToDo)

        todoViewModel = ViewModelProvider(this).get(ToDoViewModel::class.java)

        buttonAddToDo.setOnClickListener {
            val title = editTextTitle.text.toString()
            val description = editTextDescription.text.toString()

            if (title.isNotEmpty() && description.isNotEmpty()) {
                val todo = ToDo(0, title, description)
                todoViewModel.insert(todo)
                finish()
            }
        }
    }
}

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ToDo.kt:

package com.iliyadev.todo2
import androidx.room.Entity
import androidx.room.PrimaryKey

@Entity(tableName = "todo")
data class ToDo(
    @PrimaryKey(autoGenerate = true)
    val id: Long,
    val title: String,
    val description: String,
    val isCompleted: Boolean = false
)

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ToDoAdapter.kt:

package com.iliyadev.todo2

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.BaseAdapter
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView

class ToDoAdapter(var todoList: List<ToDoItem>) : RecyclerView.Adapter<ToDoViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ToDoViewHolder {
        val itemView = LayoutInflater.from(parent.context)
            .inflate(R.layout.list_item_todo, parent, false)
        return ToDoViewHolder(itemView)
    }

    override fun onBindViewHolder(holder: ToDoViewHolder, position: Int) {
        val todoItem = todoList[position]
        holder.textViewTitle.text = todoItem.title
        holder.textViewDescription.text = todoItem.description
    }

    override fun getItemCount(): Int {
        return todoList.size
    }
}

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ToDoDao.kt:

package com.iliyadev.todo2

import androidx.room.Dao
import androidx.room.Insert
import androidx.room.Query

@Dao
interface ToDoDao {
    @Insert
    suspend fun insert(todo: ToDo)

    @Query("SELECT * FROM todo")
    suspend fun getAll(): List<ToDo>

    @Query("SELECT * FROM todo")
    suspend fun getAllToDos(): List<ToDo>

    @Query("UPDATE todo SET isCompleted = :isComplete WHERE id = :id")
    suspend fun updateToDoStatus(id: Long, isComplete: Boolean)
}

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ToDoItem.kt:

package com.iliyadev.todo2

import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.CheckBox
import android.widget.TextView
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView

class ToDoItem(val title: String, val description: String){
    val todoList = listOf(
        ToDoItem("Title 1", "Description 1"),
        ToDoItem("Title 2", "Description 2"),
        // Add more items as needed
    )
}
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ToDoRepository.kt:

package com.iliyadev.todo2

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData

abstract class ToDoRepository(private val toDoDao: ToDoDao) {

    suspend fun insertToDo(toDo: ToDo) {
        toDoDao.insert(toDo)
    }

    abstract suspend fun getAllToDos(): List<ToDo>

    abstract suspend fun updateToDoStatus(id: Long, isComplete: Boolean)
}

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ToDoViewHolder.kt:

package com.iliyadev.todo2

import android.view.View
import android.widget.CheckBox
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView

class ToDoViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
    val checkBoxTodo: CheckBox = itemView.findViewById(R.id.checkBoxTodo)
    val textViewTitle: TextView = itemView.findViewById(R.id.textViewTitle)
    val textViewDescription: TextView = itemView.findViewById(R.id.textViewDescription)
}

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ToDoViewModel.kt:

package com.iliyadev.todo2

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking

class ToDoViewModel(private val todoDao: ToDoDao) : ViewModel() {

    private val _todos = MutableLiveData<List<ToDoItem>>()
    val todos: LiveData<List<ToDoItem>>
        get() = _todos

    val todos1 = runBlocking {
        todoDao.getAllToDos()
    }



    fun insert(todo: ToDo) {
        viewModelScope.launch(Dispatchers.IO) {
            todoDao.insert(todo)
        }
    }

    suspend fun updateToDoStatus(id: Long, isComplete: Boolean) {
        viewModelScope.launch(Dispatchers.IO) {
            todoDao.updateToDoStatus(id, isComplete)
        }
    }
}

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Activity_add_todo.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <EditText
        android:id="@+id/editTextTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Title" />

    <EditText
        android:id="@+id/editTextDescription"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Description"
        android:minHeight="48dp" />

    <Button
        android:id="@+id/buttonAddToDo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="Add ToDo" />

</LinearLayout>
  
  Activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginBottom="16dp"
        android:src="@drawable/baseline_add_24"
        tools:ignore="SpeakableTextPresentCheck" />

</RelativeLayout>
  
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list_item_todo.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:padding="16dp">

    <CheckBox
        android:id="@+id/checkBoxTodo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_gravity="center_vertical"/>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical"
        android:layout_marginStart="16dp">

        <TextView
            android:id="@+id/textViewTitle"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textAppearance="?android:textAppearanceMedium"/>

        <TextView
            android:id="@+id/textViewDescription"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textAppearance="?android:textAppearanceSmall"
            android:layout_marginTop="4dp"/>
    </LinearLayout>

</LinearLayout>