This query is used to execute the SQL query instead of the select query.Ĭursor query(String table, String columns, String selection, String selectionArgs, String groupBy, String having, String orderBy) Int update(String table, ContentValues values, String whereClause, String whereArgs) The third argument is used to specify the values to be stored.
ANDROID SQLITE TUTORIAL ANDROID
If the second argument is left empty, android will store a null value. It is used to insert the row in the database. Long insert(String table, String nullColumnHack, ContentValues values) It accommodates all the methods to be performed on SQLite databases such as create, select, delete, update, etc. SQLiteDatabase class along with the functions When the database needs to be downgraded, it calls this function. Public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) When the database needs updating, it calls this method. Public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) When the database is created, it calls this first only once.
Public abstract void onCreate(SQLiteDatabase db) The main purpose of this constructor is to handle errors. It is used to create a database object for creating, managing, and opening the database. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version, DatabaseErrorHandler errorHandler) It creates a database object for creating, managing, and opening the database. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) The definition of constructors and other methods are as follows: The two constructors of SQLiteOpenHelper class. We have to provide the implementation of onCreate() and onUpgrade() methods of SQLiteOpenHelper class to perform any database operations. It manages the automatic creation and updation of databasesįor database creation and updation, we are using the. It kind of manages all the operations related to the database. It is a helper class in the SQLite database. SQLiteOpenHelper along with the functions So, there is no need to manage or implement an external database setup. SQLite is used to perform the various database operations in android including storing, manipulating, and retrieving data. It stores the data to the text file in an android device. It is an open-source relational SQL database. From a remote shell to your device or from your host machine, use the sqlite3 command-line program to manage SQLite databases created by Android applications. Explain in detail SQLiteDatabase class along with the functions.
ANDROID SQLITE TUTORIAL HOW TO
This video shows How to use SQLite with android on Android Studio. Explain in detail about SQLiteOpenHelper along with the functions. Welcome to this Android SQLite Database Tutorial video.In this article, we will discuss the following pointers: Explain SQLite in Android | Android Tutorial
0 kommentar(er)
