+1  A: 

Set the background to [UIColor clearColor] than you can see the things behind.

Ghommey
Thanks for the comment. I tried your suggestion but Unfortunately it did not work..Got any other ideas Ghommey?
RexOnRoids
+2  A: 

You're drawing the background color for your cell incorrectly. A UITableViewCell will be arranged so that the contentView and accessoryView sit side-by-side. (This is done so that the contentView can clip its content so it doesn't overlap with the accessory view) The problem is not that the accessory view is opaque, it's that the gray background is simply not drawn behind the accessory view.

The correct way of customizing the background drawn behind a UITableViewCell is to customize its backgroundView. I haven't tried this, but since you're only changing the color, you might be able to simply set the backgroundColor color on the backgroundView to your desired color.

Alex
I also wanted to mention that there's a really great overview of customizing `UITableView` drawing here: http://cocoawithlove.com/2009/04/easy-custom-uitableview-drawing.html
Alex
A: 

i faced this problem myself and found this. don't ask me why is working:

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    [tableView setBackgroundColor:[UIColor clearColor]];
    return 1;
}
Cristi Băluță
A: 

I found the answer by having a look at the subviews of my custom table view cell.

It seems like the accessory view has a button sitting over it. By finding this button in the subviews and changing its color, i was able to update the background color behind the accessory button.

<UIButton: 0x3b4d690; frame = (277 0; 43 75); opaque = NO; layer = <CALayer: 0x3b3e0b0>>

for (UIView *aSubView in self.subviews) {
    if ([aSubView isMemberOfClass:[UIButton class]]) {
     aSubView.backgroundColor = [UIColor greenColor];
    }
}

Unfortunately I was only able to reach this button within the

- (void)setSelected:(BOOL)selected animated:(BOOL)animated

method of my custom table view cell class. I've used this successfully within my app to display a different highlight color when the user selects a cell. This should point you in the right direction.

Raal