iPhone: Adding Info button as right bar button item in navigation bar in code

Question

Has anyone had any success creating an info button (italic \'i\' in a circle) in code (read: without Interface Builder), and then assigning it as the right bar button item of a

Answer 1

For Swift:

func addRightNavigationBarInfoButton() {
    let button = UIButton(type: .infoDark)
    button.addTarget(self, action: #selector(self.showInfoScreen), for: .touchUpInside)
    self.navigationItem.rightBarButtonItem = UIBarButtonItem(customView: button)
}

@objc func showInfoScreen() {
    // info bar button pressed
}

Answer 2

UIButton *btn = [UIButton buttonWithType:UIButtonTypeInfoDark];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btn];

Answer 3

I guess it will be more complete response and it should help in any situation:

-(void)viewDidLoad{

    //Set Navigation Bar
    UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 64)];

    //Set title if needed
    UINavigationItem * navTitle = [[UINavigationItem alloc] init];
    navTitle.title = @"Title";

    //Here you create info button and customize it
    UIButton * tempButton = [UIButton buttonWithType:UIButtonTypeInfoLight];

    //Add selector to info button
    [tempButton addTarget:self action:@selector(infoButtonClicked) forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem * infoButton = [[UIBarButtonItem alloc] initWithCustomView:tempButton];

    //In this case your button will be on the right side
    navTitle.rightBarButtonItem = infoButton;

    //Add NavigationBar on main view
    navBar.items = @[navTitle];
    [self.view addSubview:navBar];

}

Answer 4

Here's a pretty good looking solution that I think covers all the points people brought up in the comments above. Similar to the accepted answer, but this approach includes extra spacing (via modifying the frame) so that the button isn't smashed up against the right edge.

// Create the info button
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];

// Adjust the frame by adding an addition 10 points to its width so the button is padded nicely
infoButton.frame = CGRectMake(infoButton.frame.origin.x, infoButton.frame.origin.y, infoButton.frame.size.width + 10.0, infoButton.frame.size.height);

// Hook the button up to an action
[infoButton addTarget:self action:@selector(showInfoScreen) forControlEvents:UIControlEventTouchUpInside];

// Add the button to the nav bar
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton];

// Also make sure to add a showInfoScreen method to your class!