ios7 - iOS 7: Custom Back Indicator Image Position

Question

I'm having trouble setting properly a custom back indicator image. The indicator is not centered!

Here is a pic:

I'm setting the indicator image in didFinishLaunchingWithOptions: method...

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

   UIImage *image = [UIImage imageNamed:@"Back"];
   [UINavigationBar appearance].backIndicatorImage = image;
   [UINavigationBar appearance].backIndicatorTransitionMaskImage = image;

   return YES;
}

How can I center it?

p.s I've already read this Custom back indicator image in iOS 7 not vertically centered, but actually it didn't work for me.

Answer 1

 UIEdgeInsets insets = UIEdgeInsetsMake(0, 0, 2, 0);
 UIImage *backArrowImage = [[UIImage imageNamed:@"Back"] imageWithAlignmentRectInsets:insets];

 [[UINavigationBar appearance] setBackIndicatorImage:backArrowImage];
 [[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:backArrowImage];