Category: software-development

Opening a Facebook group page in the Facebook app on the iPhone using Swift is really easy. I’m using Swift 5 and Xcode 11.6.

You must need your Facebook Page integer id which looks like this 8794208798015.

let fbPage = "fb://profile/" + FB_GROUP_ID // Your Facebook group id e.g 8794808798015
let fbURL = URL(string:fbPage)
let canOpenURL = UIApplication.shared.canOpenURL(fbURL!)
if (canOpenURL) {
    UIApplication.shared.open(fbURL!, completionHandler: nil)
}

Also update your Info.plist file otherwise you will get error like this

FSCalendar is a very good calendar library in Swift but it does not support dark mode, I’m using version 2.8.1.

We can easily change all date color by one of its delegate’s FSCalendarDelegateAppearance func.

func calendar(_ calendar: FSCalendar, appearance: FSCalendarAppearance, titleDefaultColorFor date: Date) -> UIColor? {
        
        let defaultColor = appearance.titleDefaultColor
        
        if #available(iOS 12.0, *) {
            if self.traitCollection.userInterfaceStyle == .dark {
                return .orange
            } else {
                return defaultColor
            }
        } else {
            return defaultColor
        }
        
    }

Also, don’t forget to reload the calendar data

override func willTransition(to newCollection: UITraitCollection, with coordinator: UIViewControllerTransitionCoordinator) {
        self.calendar?.reloadData()
    }