iOS7 - Change UINavigationBar border color

Question

Is it possible to change the grey border-bottom color of the UINavigationBar in iOS7?

I already tried to remove to border, but this is not working:

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Answer 1

If you like simple and hacky solutions like I do, create a view that covers the default border:

UIView *navBarLineView = [[UIView alloc] initWithFrame:CGRectMake(0, CGRectGetHeight(self.navigationController.navigationBar.frame),
                                                                  CGRectGetWidth(self.navigationController.navigationBar.frame), 1)];
navBarLineView.backgroundColor = [UIColor redColor];
[self.navigationController.navigationBar addSubview:navBarLineView];