Question

I have developed a application and i used sq-lite database wrapper (BWDB – wrapper by Bill W…..) for my tab based application and when i create the database object at my first view controller using this code

- (DBAccess *) loadDBAccessDatabase {
    // NSLog(@"%s", __FUNCTION__);
    if (!_dbObject) {

        NSString * _dbFileName = @"turfnutritiontool_ver_one.db";
        _dbObject = [[DBAccess alloc] initWithSSDBAccessFilename:_dbFileName];
    }
    // Check Point
    [TestFlight passCheckpoint:@"LOAD_DATABASE"];
    return _dbObject;
}

and it works for me in this view controller but if i create a new object when second view Controller load so the new db object work fine for data fetch but i am not able to insert or update database it says db is lock so tell me how i can manage only one db object across all the app and send to other view controller so that it works fine,

Answer 1

So you are creating two objects of the class containing this code? If so, the easiest way might be to make the _dbObject member static, as in

static DBAccess *_dbObject;

Going further, you could consider creating a singleton for the database base reference. An introduction to singletons for Cocoa is provided by Apple in Mac OS X Developer Library.