Xamarin with SQLite Telerik School Academy Xamarin apps for iOS, Android & WinPhone

1. Architecture 2. Install SQLite.NET – for PCL Project 3. Implementation  Shared code  Android  iOS  Windows Phone 2

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 PCL – Portable Class Library  Install SQLite.Net PCL from NuGet 5

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 Initial database setup requires platform-specific work  Use Interfaces to abstract any platform-specific functionality  Use the DependencyService to obtain an implementation public interface ISQLite { SQLiteConnection GetConnection(); SQLiteConnection GetConnection();} 7 public ItemDatabase() { SQLiteConnection database = DependencyService SQLiteConnection database = DependencyService.Get<ISQLite>().GetConnection(); InitializeDatabase(database); InitializeDatabase(database);}

 Create Table  Read item/s from database  Create/Add item to the database  Delete item from the database  Updata item in the database database.CreateTable<T>(); 8 database.Table<T>(); database.Insert(item); database.Delete<T>(item); database.Update(item);

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 Add SQLite.PCL – XamarinAndroid Platform from NuGet  Database location var sqliteFilename = "SQLite.db3"; string docPath = System.Environment.GetFolderPath (System.Environment.SpecialFolder.Personal); (System.Environment.SpecialFolder.Personal); var path = Path.Combine(docPath, sqliteFilename); 10

 Implement ISQLite  Add assembly Dependency 11 [assembly: Dependency (typeof (SQLite_Android))] public class SQLite_Android : ISQLite { public SQLiteConnection GetConnection () { public SQLiteConnection GetConnection () { var path =...; var path =...; var connection = new SQLiteConnection( var connection = new SQLiteConnection( new SQLitePlatformAndroid(), path); new SQLitePlatformAndroid(), path); return connection; return connection; }}

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 Add SQLite.PCL – XamarinIOS Platform from NuGet  Database location var sqliteFilename = "SQLite.db3"; string documentsPath = Environment.GetFolderPath (Environment.SpecialFolder.Personal); string libraryPath = Path.Combine (documentsPath, "..", "Library"); var path = Path.Combine(libraryPath, sqliteFilename); 13

 Implement ISQLite  Add assembly Dependency [assembly: Dependency (typeof (SQLite_iOS))] public class SQLite_iOS : ISQLite { public SQLiteConnection GetConnection () { public SQLiteConnection GetConnection () { var path =...; var path =...; var connection = new SQLiteConnection( var connection = new SQLiteConnection( new SQLitePlatformIOS(), path); new SQLitePlatformIOS(), path); return connection; return connection; }} 14

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 Windows Phone does not include the SQLite database engine  Download and Install Precompiled Binaries for Windows Phone 8 Precompiled Binaries for Windows Phone 8Precompiled Binaries for Windows Phone 8  Add References  Windows Phone SDK 8.0 > Extentions > SQLite 16

 Add SQLite.PCL – WindowsPhone8 Platform from NuGet  Implement ISQLite var sqliteFilename = "SQLite.db3"; string path = Path.Combine( ApplicationData.Current.LocalFolder.Path, ApplicationData.Current.LocalFolder.Path, sqliteFilename); sqliteFilename); 17

 Implement ISQLite  Add assembly Dependency [assembly: Dependency (typeof (SQLite_WinPhone))] public class SQLite_WinPhone : ISQLite { public SQLiteConnection GetConnection () { public SQLiteConnection GetConnection () { var path =...; var path =...; var connection = new SQLiteConnection( var connection = new SQLiteConnection( new SQLitePlatformWP8(), path); new SQLitePlatformWP8(), path); return connection; return connection; }} 18

Live Demo 19

 Architecture  Install SQLite.NET  For PCL Project  Implementation  Shared code  Android  iOS  Windows Phone 20

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