CardView CardView is used to display Student List inside the Card. Open adle adle under app directory and add CardView CardView library. Create a new project in Android Studio from File 2. Create / Setup Project File ⇒ New Project New Project and select Basic Activity from the templates. Now let’s start by creating new project in Android Studio. Following is the Student app screen shot. In rst screen we fetch full list of student from the student table while using second screen update or add new student record. We will use 2 screen to perform all this operations. The app is very simple and which allow us to insert, update, delete and view student data. Overview In this tutorial we are going to create Student App to learn all the operation related the SQLite Database. In order to access SQLite Database you don’t need to establish any kind of connections like JDBC, ODBC. SQLite database in android also support relational database features. Build apps that give your users seamless. SQLite is an open source SQL database which store the data into text le on android device. Go deeper with our training courses or explore app development on your own. SQLite Database File System Here we are going to learn how to use SQLite Database in Android application. In Android There are others data storage options also available Like Shared Preference to store small amount of data in form of Key / Value pair. It is lightweight database that comes with Android OS. If you want to store some data into local storage then SQLite Database is the most common storage option. Import 7.app.? SQLite Database Tutorial In Android Posted on Jby Bhadresh SQLite Database in Android used to store persistent data. SQLiteDatabase db = this.getReadableDatabase() Ĭursor cursor = db.rawQuery(countQuery, null) String countQuery = "SELECT * FROM " + TABLE_CONTACTS Public class DatabaseHandler extends SQLiteOpenHelper ) Let's see the simple example of android sqlite database. Int update(String table, ContentValues values, String whereClause, String whereArgs)Ĭursor query(String table, String columns, String selection, String selectionArgs, String groupBy, String having, String orderBy) The third argument specifies the values to be stored. If second argument is null, android will store null values if values are empty. The table specifies the table name, nullColumnHack doesn't allow completely null values. Long insert(String table, String nullColumnHack, ContentValues values) There are many methods in SQLiteDatabase class. It contains methods to be performed on sqlite database such as create, update, delete, select etc. Public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion)Ĭalled when database needs to be downgraded. Public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)Ĭalled when database needs to be upgraded. Public abstract void onCreate(SQLiteDatabase db)Ĭalled only once when database is created for the first time. There are many methods in SQLiteOpenHelper class. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version, DatabaseErrorHandler errorHandler)Ĭreates an object for creating, opening and managing the database. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version)Ĭreates an object for creating, opening and managing the database. There are two constructors of SQLiteOpenHelper class. For performing any database operation, you have to provide the implementation of onCreate() and onUpgrade() methods of SQLiteOpenHelper class. The class is used for database creation and version management. SQLiteOpenHelper class provides the functionality to use the SQLite database. For displaying data on the spinner or listview, move to the next page. Here, we are going to see the example of sqlite to store and fetch the data. So, there is no need to perform any database setup or administration task. used to perform database operations on android devices such as storing, manipulating or retrieving persistent data from the database. SQLite is an open-source relational database i.e.
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