Android SQLite database and content provider - tutorial. Android - Phonegap get localstorage values from Java code. Local storage - Overriding default functions in Javascript. Java - Local Storage in Android Web View doesn't work sometimes. Using your own SQLite database in Android applications | ReignDesign. Most all of the Android examples and tutorials out there assume you want to create and populate your database at runtime and not to use and access an independent, preloaded database with your Android application.
The method I'm going to show you takes your own SQLite database file from the "assets" folder and copies into the system database path of your application so the SQLiteDatabase API can open and access it normally. 1. Preparing the SQLite database file. Assuming you already have your sqlite database created, we need to do some modifications to it. If you don't have a sqlite manager I recommend you to download the opensource SQLite Database Browser available for Win/Linux/Mac. Open your database and add a new table called "android_metadata", you can execute the following SQL statement to do it: CREATE TABLE "android_metadata" ("locale" TEXT DEFAULT 'en_US') Now insert a single row with the text 'en_US' in the "android_metadata" table: INSERT INTO "android_metadata" VALUES ('en_US') 2.
Android - Iterate through rows from Sqlite-query. Android Application Development: Playing with SQLite Database. In this article, I will focus on building an Android app using an SQLite database; I assume readers are familiar with the basics of database operations and concepts. Here, we will also be using some threaded programming in Java, so I’m assuming readers are familiar with this concept. The SQLite database is used in Android for storing and managing application data. The SQLite database is an open source lightweight transaction SQL database engine. There are other means of storing application data in Android rather than a database (they are known as Preferences), but those are more often used to store a very small amount of information, like usernames and passwords, so that users are not prompted for their credentials every time the application is started.
Let’s get started with the design of the application (see Figures 1 and 2). Figure 1: Design of our simple login application Figure 2: Table design We will create a database that holds the credentials of all the users. Figure 5: Login page. SaketSrivastav/Simple-Login-Page. Comment utiliser SQLite sous Android [Tutoriel Android n°19] | Tuto Mobile. Après une grosse période de coupure, me revoilà avec de nouveaux tutos. Celui d’aujourd’hui concerne SQLite sous Android. C’est toujours utile de pouvoir stocker quelques données dans une application.
Les tables que l’on créé avec SQLite doivent bien entendu être simple tout comme les requêtes que vous ferez dessus. Rappelez-vous que l’on n’est pas sur des méga serveurs ultra puissants, mais simplement sur un mobile ! Pour notre exemple, nous allons créer une mini base de données pour enregistrer des livres. Durant ce tuto, nous utiliserons les classes suivantes : SQLiteOpenHelper qui est une classe d’assistance pour gérer la création de bases de données et la gestion des versions.ContentValue, cette classe est utilisée pour stocker un ensemble de valeurs que le ContentResolver peut traiter.Cursor est une interface qui donne accès en lecture-écriture à l’ensemble des résultats retournés par une requête de base de données. Code Java Voilà ! Storage Options. Android provides several options for you to save persistent application data. The solution you choose depends on your specific needs, such as whether the data should be private to your application or accessible to other applications (and the user) and how much space your data requires.
Your data storage options are the following: Shared Preferences Store private primitive data in key-value pairs. Internal Storage Store private data on the device memory. External Storage Store public data on the shared external storage. SQLite Databases Store structured data in a private database. Network Connection Store data on the web with your own network server. Android provides a way for you to expose even your private data to other applications — with a content provider. Using Shared Preferences The SharedPreferences class provides a general framework that allows you to save and retrieve persistent key-value pairs of primitive data types. User Preferences To write values: // Commit the edits!
For example: