UINavigationBar - change UIBarButtonItem positions

I am using a UINavigationController and its bar within my app. Now I want to change the leftBarButtonItem and rightBarButtonItem positions. I want them to be on a different x and y position having a custom witdth and height.

But the problem is, that changing the frame does not change anything with the barButtonItem. I do not now why, but the frame always gets resetted to its original coordinates.

Here is my code which I call in viewWillAppear:

UINavigationItem *navItem = [[self.navigationBar items] lastObject];

UIView *rightview = [[UIView alloc] initWithFrame:CGRectMake(0,0,66,30)];
rightview.backgroundColor = [UIColor blueColor];

//add custom view
UIBarButtonItem *search = [[UIBarButtonItem alloc] initWithCustomView:rightview];
navItem.leftBarButtonItem = search;

The view is not starting at 0/0, the x position for example is at 5px insetead of 0.

Any suggestions on how to solve this issue?

I dont think you have the ability to move a UIBarButtonItem but you might be able to achieve the same effect by adding that UIView element as a subview to the navigationBar (or navItem). You'll need to play with it a bit. It should allow for much more flexibility.

hope this helps.