self.tableView.backgroundColor = [UIColor clearColor];
self.tableView.contentInset = UIEdgeInsetsMake(50,0,0,0);

TTView *test = [[TTView alloc] init];
test.frame = CGRectMake(0, 0, 320, 50);
test.backgroundColor = [UIColor grayColor];
[self.view addSubview:test];

[self.view bringSubviewToFront:self.tableView];