Objective C UItableView header custom view black - ios

Question

I am creating a custom view for my header and it only shows up as a black rectangle.
The code for the tableviewcontroller is:
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
head* headerView = [[head alloc]init];
headerView.name=[sectionList objectAtIndex:section];
[headerView setNeedsDisplay];
return headerView;
}
where head is the custom view with a drawrect function:
- (void)drawRect:(CGRect)rect
{
// Drawing code
[self setBackgroundColor:[UIColor colorWithRed:125 green:125 blue:125 alpha:.5]];
bounds = [self bounds];
CGContextRef context = UIGraphicsGetCurrentContext();
CGSize titleSize=CGSizeFromString(self.name);
CGRect titleRect={CGPointMake(10, 10),titleSize};
UILabel *title = [[UILabel alloc] initWithFrame:titleRect];
[title setTextColor:[UIColor blackColor]];
[title setBackgroundColor:[UIColor clearColor]];
[title setFont:[UIFont fontWithName: #"Trebuchet MS" size: 14.0f]];
[title setText:self.name];
[self addSubview:title];
CGContextSetRGBFillColor(context, 80, 168, 206, 0.5);
CGContextAddEllipseInRect(context, CGRectMake(titleRect.origin.x, 0,20, 20));
}
Also when I try to set the name in the viewController (see above). The name remains null.
When I tried to do it without a custom UIView. This time it only showed a white view:
UIView *headerView = [[UIView alloc]initWithFrame:CGRectMake(0.0f, 0.0f, self.tableView.bounds.size.width,40.0f)];
[headerView setBackgroundColor:[UIColor colorWithRed:71 green:71 blue:71 alpha:.5]];
UIImage *reps = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource: #"test" ofType: #"png"]];
CGSize titleSize=CGSizeFromString([sectionList objectAtIndex:section]);
CGRect titleRect={CGPointMake(0, 0),titleSize};
UILabel *groupTitle = [[UILabel alloc]initWithFrame:titleRect];
[groupTitle setText:[sectionList objectAtIndex:section]];
[headerView addSubview:groupTitle];
UIImageView* repsView = [[UIImageView alloc]initWithImage:reps];
[headerView addSubview:repsView];
return headerView;
}
Thanks

Answer 1

You should create headerView by providing frame, for example:
head* headerView = [[head alloc]initWithFrame:CGRectMake(0.0f, 0.0f, self.tableView.bounds.size.width, 40.0f)];
After that make sure you implemented table view delegate for table header height:
-(CGFloat) tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 40.0f;
}
You should consider create custom view without overriding drawRect: method because this is very CPU expensive.