Question

I have a problem here. My app saves some objects into a SQLite database and that database is the source for my UITableView. Everything works fine, except if a add a new object to my database at runtime, my UITableView doesn´t update its content. Here´s my code:

- (void)viewDidLoad
{
    [self daten];
    [super viewDidLoad];
}

-(NSMutableArray *) daten{

if (daten)
    return daten;

    self.daten = [[NSMutableArray alloc] init];

@try {
    NSFileManager *fileMgr = [NSFileManager defaultManager];
    NSString *dbPath = [self getDBPath];
    BOOL success = [fileMgr fileExistsAtPath:dbPath];
    if(!success)
    {
        NSLog(@"Cannot locate database file '%@'.", dbPath);
    }
    if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
    {
        NSLog(@"An error has occured: %s", sqlite3_errmsg(db));

    }


    const char *sql = "SELECT * FROM  Daten";
    if(sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK)
    {
        NSLog(@"Problem with prepare statement:  %s", sqlite3_errmsg(db));
    }else{

        while (sqlite3_step(sqlStatement)==SQLITE_ROW) {
            .......
        }
    }
}
@catch (NSException *exception) {
    NSLog(@"Problem with prepare statement:  %s", sqlite3_errmsg(db));
}
@finally {
    sqlite3_finalize(sqlStatement);
    sqlite3_close(db);

    return daten;
}
}

I think the problem is here:

if (daten)
    return daten;

    self.daten = [[NSMutableArray alloc] init];

But if my database gets a new object at runtime, my array is not nil at that moment and will be just returned without the new object!

Answer 1

It’s simple, just add :-

[tableView reloadData];