Samsung

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

   xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:id="@+id/main"

   android:orientation="vertical"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   tools:context=".MainActivity">

   <ListView

       android:id="@+id/tasks_list_view"

       android:layout_width="match_parent"

       android:layout_height="600dp"/>

   <LinearLayout

       android:background="#ababab"

       android:orientation="vertical"

       android:layout_width="match_parent"

       android:layout_height="match_parent">

       <EditText

           android:id="@+id/task_text"

           android:hint="Введите название задачи"

           android:layout_width="match_parent"

           android:layout_height="wrap_content"/>

       <LinearLayout

           android:layout_margin="5dp"

           android:orientation="horizontal"

           android:layout_width="match_parent"

           android:layout_height="wrap_content">

           <TextView

               android:textSize="20sp"

               android:text="Выполнено"

               android:layout_width="wrap_content"

               android:layout_height="wrap_content"/>

           <Switch

               android:layout_marginLeft="5dp"

               android:id="@+id/is_done_switch"

               android:layout_width="wrap_content"

               android:layout_height="wrap_content"/>

       </LinearLayout>

       <Button

           android:id="@+id/add_task_btn"

           android:text="Добавить"

           android:layout_width="match_parent"

           android:layout_height="wrap_content"/>

   </LinearLayout>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

   xmlns:android="http://schemas.android.com/apk/res/android"

   android:orientation="horizontal"

   android:layout_width="match_parent"

   android:layout_height="match_parent">

   <TextView

       android:id="@+id/item_task_id"

       android:text="fasdfasdf"

       android:layout_weight="1"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"/>

   <TextView

       android:id="@+id/item_task_text"

       android:text="sadfsadf"

       android:layout_weight="1"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"/>

   <Switch

       android:id="@+id/item_switch"

       android:layout_weight="1"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"/>

</LinearLayout>

package com.example.dbappexample;

public class Task {

   private int id;

   private String text;

   private boolean isDone;

   public Task(int id, String text, boolean isDone) {

       this.id = id;

       this.text = text;

       this.isDone = isDone;

   }

   public int getId() {

       return id;

   }

   public String getText() {

       return text;

   }

   public boolean isDone() {

       return isDone;

   }

}

package com.example.dbappexample;

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

import java.util.ArrayList;

public class TasksDB {

   private final String DB_NAME = "db";

   private final int DB_VERSION = 1;

   private final String TABLE_NAME = "tasks";

   private final String COLUMN_ID = "id";

   private final String COLUMN_TEXT = "text";

   private final String COLUMN_IS_DONE = "is_done";

   private SQLiteDatabase dataBase;

   public TasksDB(Context context){

       OpenHelper openHelper = new OpenHelper(context);

       dataBase = openHelper.getWritableDatabase();

   }

   public void add(String text) {

       ContentValues contentValues = new ContentValues();

       contentValues.put(COLUMN_TEXT, text);

       contentValues.put(COLUMN_IS_DONE, false);

       dataBase.insert(TABLE_NAME, null, contentValues);

   }

   public ArrayList<Task> getTasks() {

       // SELECT * FROM tasks

       Cursor cursor = dataBase.query(TABLE_NAME, null, null, null, null, null, null);

       ArrayList<Task> tasks = new ArrayList<>();

       while (cursor.moveToNext()) {

           int id = cursor.getInt(cursor.getColumnIndexOrThrow(COLUMN_ID));

           String text = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_TEXT));

           int isDone = cursor.getInt(cursor.getColumnIndexOrThrow(COLUMN_IS_DONE));

           tasks.add(new Task(id, text, isDone != 0));

       }

       return tasks;

   }

   private class OpenHelper extends SQLiteOpenHelper {

       OpenHelper(Context context) {

           super(context, DB_NAME, null, DB_VERSION);

       }

       @Override

       public void onCreate(SQLiteDatabase db) {

           String query = "CREATE TABLE " + TABLE_NAME + " (" +

                   COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +

                   COLUMN_TEXT + " STRING, " +

                   COLUMN_IS_DONE + " BOOLEAN" +

                   ")";

           db.execSQL(query);

       }

       @Override

       public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

           String query = "DROP TABLE " + TABLE_NAME;

           db.execSQL(query);

           onCreate(db);

       }

   }

}

package com.example.dbappexample;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.Switch;

import android.widget.TextView;

import java.util.ArrayList;

public class TaskAdapter extends ArrayAdapter<Task> {

   public TaskAdapter(Context context, ArrayList<Task> tasks) {

       super(context, R.layout.task_list_item, tasks);

   }

   @Override

   public View getView(int position, View convertView, ViewGroup parent) {

       if (convertView == null){

           convertView = LayoutInflater.from(getContext()).inflate(

                   R.layout.task_list_item,

                   null

           );

       }

       TextView textViewId = convertView.findViewById(R.id.item_task_id);

       TextView textViewText = convertView.findViewById(R.id.item_task_text);

       Switch itemSwitch = convertView.findViewById(R.id.item_switch);

       Task task = getItem(position);

       textViewId.setText(String.valueOf(task.getId()));

       textViewText.setText(task.getText());

       itemSwitch.setChecked(task.isDone());

       return convertView;

   }

}

package com.example.dbappexample;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.Switch;

import androidx.activity.EdgeToEdge;

import androidx.appcompat.app.AppCompatActivity;

import androidx.core.graphics.Insets;

import androidx.core.view.ViewCompat;

import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity {

   ListView listView;

   Button addButton;

   EditText text;

   Switch isDoneSwitch;

   TasksDB tasksDB;

   @Override

   protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

       tasksDB = new TasksDB(getApplicationContext());

       listView = findViewById(R.id.tasks_list_view);

       addButton = findViewById(R.id.add_task_btn);

       text = findViewById(R.id.task_text);

       isDoneSwitch = findViewById(R.id.is_done_switch);

       TaskAdapter taskAdapter = new TaskAdapter(

               getApplicationContext(),

               tasksDB.getTasks()

       );

       addButton.setOnClickListener(new View.OnClickListener() {

           @Override

           public void onClick(View v) {

               tasksDB.add(text.getText().toString());

               taskAdapter.clear();

               taskAdapter.addAll(tasksDB.getTasks());

               taskAdapter.notifyDataSetInvalidated();

           }

       });

       listView.setAdapter(taskAdapter);

   }

}