Here is an example demonstrating the use of SQLite Database. Public class DBHelper extends SQLiteOpenHelper It automatically manages the creation and update of the database. This method returns true if the cursor is closed and return false otherwiseįor managing all the operations related to the database, an helper class has been given and is called SQLiteOpenHelper. This method returns the current position of the cursor in the table This method returns the total number of rows in the cursor This method returns the array of all the column names of the table. This method returns the name of the column by specifying the index of the column This method returns the index number of a column by specifying the name of the column This method return the total number of columns of the table. Another method that also does the same job but take some additional parameter is given below This will insert some values into our table in our database. Mydatabase.execSQL("INSERT INTO TutorialsPoint VALUES('admin','admin') ") Mydatabase.execSQL("CREATE TABLE IF NOT EXISTS TutorialsPoint(Username VARCHAR,Password VARCHAR) ") We can create table or insert data into table using execSQL method defined in SQLiteDatabase class. This method is similar to above method but it takes the File object as a path rather then a string. OpenOrCreateDatabase(File file, SQLiteDatabase.CursorFactory factory) This method is equivalent to openDatabase method. It not only opens but create the database if it not exists. OpenOrCreateDatabase(String path, SQLiteDatabase.CursorFactory factory) It is similar to the above method as it also opens the existing database but it does not define any handler to handle the errors of databases OpenDatabase(String path, SQLiteDatabase.CursorFactory factory, int flags) The common flags mode could be OPEN_READWRITE OPEN_READONLY This method only opens the existing database with the appropriate flag mode. PLEASE HELP TO TEST THE APPLICATION ON THE IPHONE.OpenDatabase(String path, SQLiteDatabase.CursorFactory factory, int flags, DatabaseErrorHandler errorHandler) but it keeps giving me the error, and it's only on the physical device. I have tried to run the application on an iPhone physically, and the database cannot be found.Īnd I'm desperate because I don't know what to do, I just have to try on physical devices to upload the application, if it works, to the apple store. Self.present(alertController, animated: true, completion: nil) alert)ĪlertController.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: "Default Action"), style. Let alertController = UIAlertController(title: "Information", message: "Error. Let dbFile = (forResource: "Database.sqlite", withExtension: nil)! if sqlite3_open(dbFile.path, &DataBase) != SQLITE_OK I have tried what you indicate in the image and I have used the code I have had the flu and I have not been able to recover until today. In addition to that if you specify "Application supports iTunes file sharing: true" in the project's plist file you'll be able to import / export that file from your app when you connect your iPhone to the computer (Devices → your device → Your app → Files tab) - might be convenient for debugging, or as a user feature. Let sourceFile = (forResource: "database.db", withExtension: nil)! userDomainMask, true)į(atPath: path)ĭbFile = ("database.db") Let array = NSSearchPathForDirectoriesInDomains(.documentDirectory.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |