UIBarButtonItem *fixedItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil]; fixedItem.width = 20.0f; // or whatever you want UIBarButtonItem *flexibleItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
To be precise, this can be done as below [buttonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIFont fontWithName:@”Helvetica-Bold” size:26.0], NSFontAttributeName, [UIColor greenColor], NSForegroundColorAttributeName, nil] forState:UIControlStateNormal]; Or with object literal syntax: [buttonItem setTitleTextAttributes:@{ NSFontAttributeName: [UIFont fontWithName:@”Helvetica-Bold” size:26.0], NSForegroundColorAttributeName: [UIColor greenColor] } forState:UIControlStateNormal]; For convenience, here’s the Swift implementation: buttonItem.setTitleTextAttributes([ NSAttributedStringKey.font: UIFont(name: “Helvetica-Bold”, size: 26.0)!, NSAttributedStringKey.foregroundColor: UIColor.green], for: .normal)
Custom button image without setting button frame: You can use init(image: UIImage?, style: UIBarButtonItemStyle, target: Any?, action: Selector?) to initializes a new item using the specified image and other properties. let button1 = UIBarButtonItem(image: UIImage(named: “imagename”), style: .plain, target: self, action: Selector(“action”)) // action:#selector(Class.MethodName) for swift 3 self.navigationItem.rightBarButtonItem = button1 Check this Apple Doc. reference … Read more
Try putting this into the view controller where you want to detect the press: -(void) viewWillDisappear:(BOOL)animated { if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) { // back button was pressed. We know this is true because self is no longer // in the navigation stack. } [super viewWillDisappear:animated]; }
To set the back button title for a view controller without changing its title use: Objective-C: self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@”” style:self.navigationItem.backBarButtonItem.style target:nil action:nil]; Swift: navigationItem.backBarButtonItem = UIBarButtonItem(title: “”, style: .plain, target: nil, action: nil) To be clear, this is done on the view controller that you would see if you hit the back button. … Read more
You can change the global tint color in your storyboard by clicking on an empty space on the board and select in the right toolbar “Show the file inspector”, and you will see in the bottom of the toolbar the “Global Tint” option.
Save your button in a strong outlet (let’s call it myButton) and do this to add/remove it: // Get the reference to the current toolbar buttons NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy]; // This is how you remove the button from the toolbar and animate it [toolbarButtons removeObject:self.myButton]; [self setToolbarItems:toolbarButtons animated:YES]; // This is how you … Read more