getBlob method

Future getBlob(dynamic dbName)

Implementation

Future<dynamic> getBlob(dbName) async {
  dynamic intValue;
  List<Map<String, dynamic>> allRows = [{}];
  Directory documentsDirectory = await getApplicationDocumentsDirectory();
  String path = join(documentsDirectory.path, "$dbName.db");
  Database _database = await openDatabase(path, version: _databaseVersion,
      onCreate: (Database db, int version) async {
    await db.execute(
        'CREATE TABLE ${dbName}1 (${dbName}_key INTEGER, $dbName BLOB)');
  });
  Database db = _database;
  var getValue;

  getValue = Sqflite.firstIntValue(
      await db.rawQuery('SELECT COUNT(*) FROM ${dbName}1'));
  try {
    allRows = await db.query(dbName + '1');
    intValue = allRows[getValue - 1][dbName];
    print("$dbName value is $intValue");
    return intValue;
  } catch (exception) {
    print("no data was found in $dbName");
    return "";
  }
}