Flutter sqflite app does not working on real ios device
5,265
Solution 1
I found this answer on github github
import 'package:path/path.dart' as p;
Future<Database> initializeDatabase() async {
//Get path of the directory for android and iOS.
var databasesPath = await getDatabasesPath();
String path = p.join(databasesPath, 'cards.db');
//open/create database at a given path
var cardDatabase = await openDatabase(path, version: 1, onCreate: _createDb);
return cardDatabase;
}
Add package in pubspec.yaml
dependencies:
flutter:
sdk: flutter
path: any
Solution 2
I run into same issue. You may use path_provider package but then, for ios, you also have to use path_provider_macos package
path_provider: ^1.6.1
path_provider_macos: ^0.0.1
I also switched to path package.
Author by
Saeed Hashem
Updated on December 10, 2022Comments
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Saeed Hashem over 1 year
I have a flutter app using sqflite database. It works perfectly on android emulator and device, also working on ios simulator. on ios real device it works but does not save or retrieve data just static empty UI I use xcode 10.1, and ios 11.2.6 on iphone 6 and ios 12.1.4 on iphone 5s.
import 'package:sqflite/sqflite.dart'; import 'dart:async'; import 'dart:io'; import 'package:path_provider/path_provider.dart'; import 'package:flutter_app/models/note.dart'; class DatabaseHelper { static DatabaseHelper _databaseHelper; // Singleton DatabaseHelper static Database _database; // Singleton Database String noteTable = 'note_table'; String colId = 'id'; String colTitle = 'title'; String colDescription = 'description'; String colPriority = 'priority'; String colDate = 'date'; DatabaseHelper._createInstance(); // Named constructor to create instance of DatabaseHelper factory DatabaseHelper() { if (_databaseHelper == null) { _databaseHelper = DatabaseHelper._createInstance(); // This is executed only once, singleton object } return _databaseHelper; } Future<Database> get database async { if (_database == null) { _database = await initializeDatabase(); } return _database; } Future<Database> initializeDatabase() async { // Get the directory path for both Android and iOS to store database. Directory directory = await getApplicationDocumentsDirectory(); String path = directory.path + 'notes.db'; // Open/create the database at a given path var notesDatabase = await openDatabase(path, version: 1, onCreate: _createDb); return notesDatabase; } void _createDb(Database db, int newVersion) async { await db.execute('CREATE TABLE $noteTable($colId INTEGER PRIMARY KEY AUTOINCREMENT, $colTitle TEXT, ' '$colDescription TEXT, $colPriority INTEGER, $colDate TEXT)'); } // Fetch Operation: Get all note objects from database Future<List<Map<String, dynamic>>> getNoteMapList() async { Database db = await this.database; // var result = await db.rawQuery('SELECT * FROM $noteTable order by $colPriority ASC'); var result = await db.query(noteTable, orderBy: '$colPriority ASC'); return result; } // Insert Operation: Insert a Note object to database Future<int> insertNote(Note note) async { Database db = await this.database; var result = await db.insert(noteTable, note.toMap()); return result; } // Update Operation: Update a Note object and save it to database Future<int> updateNote(Note note) async { var db = await this.database; var result = await db.update(noteTable, note.toMap(), where: '$colId = ?', whereArgs: [note.id]); return result; } // Delete Operation: Delete a Note object from database Future<int> deleteNote(int id) async { var db = await this.database; int result = await db.rawDelete('DELETE FROM $noteTable WHERE $colId = $id'); return result; } // Get number of Note objects in database Future<int> getCount() async { Database db = await this.database; List<Map<String, dynamic>> x = await db.rawQuery('SELECT COUNT (*) from $noteTable'); int result = Sqflite.firstIntValue(x); return result; } // Get the 'Map List' [ List<Map> ] and convert it to 'Note List' [ List<Note> ] Future<List<Note>> getNoteList() async { var noteMapList = await getNoteMapList(); // Get 'Map List' from database int count = noteMapList.length; // Count the number of map entries in db table List<Note> noteList = List<Note>(); // For loop to create a 'Note List' from a 'Map List' for (int i = 0; i < count; i++) { noteList.add(Note.fromMapObject(noteMapList[i])); } return noteList; } }
this code is a tutorial on youtube and it works fine on android and ios simulator only
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Sumit Shukla almost 4 yearsDo we need to remove path_provider and add path dependency?
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Aravin almost 4 yearsIs that any technical information on this? other than the answer