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ChriztiaanChriztiaan
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Added setup for MAUI app, before PS is working on it.
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‎demos/TodoSQLite/App.xaml

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<?xml version = "1.0" encoding = "UTF-8" ?>
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<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:local="clr-namespace:TodoSQLite"
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x:Class="TodoSQLite.App">
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<Application.Resources>
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<ResourceDictionary>
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<ResourceDictionary.MergedDictionaries>
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<ResourceDictionary Source="Resources/Styles/Colors.xaml" />
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<ResourceDictionary Source="Resources/Styles/Styles.xaml" />
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</ResourceDictionary.MergedDictionaries>
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</ResourceDictionary>
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</Application.Resources>
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</Application>

‎demos/TodoSQLite/App.xaml.cs

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namespace TodoSQLite;
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public partial class App : Application
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{
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public App()
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{
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InitializeComponent();
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MainPage = new AppShell();
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}
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}

‎demos/TodoSQLite/AppShell.xaml

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<?xml version="1.0" encoding="UTF-8" ?>
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<Shell
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x:Class="TodoSQLite.AppShell"
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xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:views="clr-namespace:TodoSQLite.Views"
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Shell.FlyoutBehavior="Disabled">
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<ShellContent
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Title="Todo"
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ContentTemplate="{DataTemplate views:TodoListPage}"
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Route="TodoList" />
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</Shell>

‎demos/TodoSQLite/AppShell.xaml.cs

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using TodoSQLite.Views;
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namespace TodoSQLite;
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public partial class AppShell : Shell
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{
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public AppShell()
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{
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InitializeComponent();
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Routing.RegisterRoute(nameof(TodoItemPage), typeof(TodoItemPage));
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}
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}

‎demos/TodoSQLite/Constants.cs

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namespace TodoSQLite;
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public static class Constants
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{
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public const string DatabaseFilename = "TodoSQLite.db3";
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public const SQLite.SQLiteOpenFlags Flags =
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// open the database in read/write mode
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SQLite.SQLiteOpenFlags.ReadWrite |
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// create the database if it doesn't exist
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SQLite.SQLiteOpenFlags.Create |
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// enable multi-threaded database access
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SQLite.SQLiteOpenFlags.SharedCache;
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public static string DatabasePath =>
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Path.Combine(FileSystem.AppDataDirectory, DatabaseFilename);
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}

‎demos/TodoSQLite/Data/AppSchema.cs

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using TodoSQLite.Models;
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using PowerSync.Common.DB.Schema;
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class AppSchema
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{
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public static Table Todos = new Table(new Dictionary<string, ColumnType>
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{
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{ "list_id", ColumnType.TEXT },
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{ "created_at", ColumnType.TEXT },
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{ "completed_at", ColumnType.TEXT },
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{ "description", ColumnType.TEXT },
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{ "created_by", ColumnType.TEXT },
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{ "completed_by", ColumnType.TEXT },
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{ "completed", ColumnType.INTEGER }
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}, new TableOptions
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{
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Indexes = new Dictionary<string, List<string>> { { "list", new List<string> { "list_id" } } }
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});
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public static Table Lists = new Table(new Dictionary<string, ColumnType>
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{
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{ "created_at", ColumnType.TEXT },
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{ "name", ColumnType.TEXT },
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{ "owner_id", ColumnType.TEXT }
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});
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public static Schema PowerSyncSchema = new Schema(new Dictionary<string, Table>
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{
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{ "todos", Todos },
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{ "lists", Lists }
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});
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}

‎demos/TodoSQLite/Data/TodoItemDatabase.cs

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using Microsoft.Extensions.Logging;
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using Newtonsoft.Json;
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using PowerSync.Common.Client;
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using SQLite;
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using TodoSQLite.Models;
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namespace TodoSQLite.Data;
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public class TodoItemDatabase
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{
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SQLiteAsyncConnection Database;
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public TodoItemDatabase()
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{
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}
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async Task Init()
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{
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var db = new PowerSyncDatabase(new PowerSyncDatabaseOptions
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{
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Database = new SQLOpenOptions { DbFilename = "cli-example.db" },
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Schema = AppSchema.PowerSyncSchema,
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});
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await db.Init();
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var x = await db.GetAll<object>("select * from lists;");
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await Application.Current.MainPage.DisplayAlert("Title", JsonConvert.SerializeObject(x), "OK");
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if (Database is not null)
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return;
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Database = new SQLiteAsyncConnection(Constants.DatabasePath, Constants.Flags);
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var result = await Database.CreateTableAsync<TodoItem>();
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}
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public async Task<List<TodoItem>> GetItemsAsync()
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{
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await Init();
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return await Database.Table<TodoItem>().ToListAsync();
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}
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public async Task<List<TodoItem>> GetItemsNotDoneAsync()
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{
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await Init();
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return await Database.Table<TodoItem>().Where(t => t.Done).ToListAsync();
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// SQL queries are also possible
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//return await Database.QueryAsync<TodoItem>("SELECT * FROM [TodoItem] WHERE [Done] = 0");
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}
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public async Task<TodoItem> GetItemAsync(int id)
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{
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await Init();
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return await Database.Table<TodoItem>().Where(i => i.ID == id).FirstOrDefaultAsync();
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}
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public async Task<int> SaveItemAsync(TodoItem item)
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{
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await Init();
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if (item.ID != 0)
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{
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return await Database.UpdateAsync(item);
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}
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else
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{
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return await Database.InsertAsync(item);
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}
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}
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public async Task<int> DeleteItemAsync(TodoItem item)
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{
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await Init();
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return await Database.DeleteAsync(item);
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}
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}

‎demos/TodoSQLite/MauiProgram.cs

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using Microsoft.Extensions.DependencyInjection.Extensions;
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using Microsoft.Extensions.Logging;
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using TodoSQLite.Data;
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using TodoSQLite.Views;
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namespace TodoSQLite;
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public static class MauiProgram
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{
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public static MauiApp CreateMauiApp()
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{
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var builder = MauiApp.CreateBuilder();
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builder
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.UseMauiApp<App>()
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.ConfigureFonts(fonts =>
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{
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fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
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fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
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});
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builder.Logging.SetMinimumLevel(LogLevel.Debug);
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builder.Logging.AddDebug();
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builder.Services.AddSingleton<TodoListPage>();
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builder.Services.AddTransient<TodoItemPage>();
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builder.Services.AddSingleton<TodoItemDatabase>();
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return builder.Build();
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}
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}

‎demos/TodoSQLite/Models/TodoItem.cs

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using SQLite;
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namespace TodoSQLite.Models;
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public class TodoItem
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{
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[PrimaryKey, AutoIncrement]
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public int ID { get; set; }
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public string Name { get; set; }
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public string Notes { get; set; }
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public bool Done { get; set; }
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}

‎demos/TodoSQLite/Platforms/Android/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true"></application>
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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<uses-permission android:name="android.permission.INTERNET" />
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</manifest>

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