Remove Border of UISearchBar in iOS7

I'm trying to remove border of UISearchBar in iOS 7. In iOS 6 it's working fine. I created the UISearchBar programatically. I tried almost every thing from Stack Overflow and Google.

SearchBar looking right now

What i want to achieve

I tried all these stuffs mentioned below

searchBar.layer.borderWidth = 1;
searchBar.layer.borderColor = [[UIColor whiteColor] CGColor];

and

for (id img in searchBar.subviews)
{       
     if ([img isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
     {     
            [img removeFromSuperview];    
     }
} 

and

for (UIView *sub in self.tableView.tableHeaderView.subviews) {
    if ([sub isKindOfClass:[UIImageView class]]) {
        sub.hidden = YES;
    }
}  

but still no success.

Solution 1:

Set Search Style = minimal in Search Bar properties in IB

Or

Swift:
searchBar.searchBarStyle = UISearchBarStyleMinimal;

Swift 3:
searchBar.searchBarStyle = .minimal;

Solution 2:

Setting searchBarStyle to UISearchBarStyleMinimal messed up my color setup, so doing this instead fixed the issue.

[self.searchField setBackgroundImage:[[UIImage alloc]init]];

For those looking for this option in Swift 4:

searchField.setBackgroundImage(UIImage(), for: .any, barMetrics: UIBarMetrics.default)

Solution 3:

For Swift, these 2 lines are enough:

self.search.isTranslucent = false
self.search.backgroundImage = UIImage()

And then, apply required color that you want:

self.search.barTintColor = .red

Solution 4:

I found the solution: set the barTintColor of UISearchBar to clearColor

topSearchBar.barTintColor = [UIColor clearColor];