UIKeyboard

• Requirements

• Installation

  • CocoaPods

• Usage

• License

Requirements

• iOS 8.0+
• Xcode 9.0+
• Swift 4.0+

Installation

Cocoa pods

To integrate UIKeyboard into your Xcode project using CocoaPods, create Podfile. Run the following command in root folder of your project:

$ pod init

In the Podfile that appears, specify:

platform :ios, ‘8.0’

target '<Your Target Name>' do
    use_frameworks!
    pod 'UIKeyboard'
end

Then, run the following command:

$ pod install

Usage

1. By default UIViewController have UIKeyboard property with keyboard name which notify about keyboard appearance changes

class UIKeyboardViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Default UIViewController keyboard property
        self.keyboard
        
    }
    
}

2. You can use UIKeyboard observers with closure or(and) delegate. Choose a method that is more convenient for you.

• with UIKeyboardDelegate:

class UIKeyboardViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Add delegate to default UIViewController keyboard property
        self.keyboard.delegate = self

    }

}

extension UIKeyboardViewController: UIKeyboardDelegate {

    func keyboardWillShow(with info: UIKeyboard.Info) {
        // Posted immediately prior to the display of the keyboard
    }

    func keyboardDidShow(with info: UIKeyboard.Info) {
        // Posted immediately after the display of the keyboard.
    }

    func keyboardWillHide(with info: UIKeyboard.Info) {
        // Posted immediately prior to the dismissal of the keyboard.
    }

    func keyboardDidHide(with info: UIKeyboard.Info) {
        // Posted immediately after the dismissal of the keyboard.
    }

}

• with closures

class UIKeyboardViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        self.keyboard.willShow { (info) in
            // Posted immediately prior to the display of the keyboard
        }

        self.keyboard.didShow { (info) in
            // Posted immediately after the display of the keyboard.
        }

        self.keyboard.willHide { (info) in
            // Posted immediately prior to the dismissal of the keyboard.
        }

        self.keyboard.didHide { (info) in
            // Posted immediately after the dismissal of the keyboard.
        }

    }

}

3. UIKeyboard.Info have next properties:

/// Rect that identifies the ending frame rectangle of the keyboard in screen coordinates. The frame rectangle reflects the current orientation of the device.
public let frame: CGRect

/// Time interval that identifies the duration of the animation in seconds.
public let animationDuration: TimeInterval

/// Animation curve constant that defines how the keyboard will be animated onto or off the screen.
public let animationCurve: UIView.AnimationCurve

/// Animation options constant that defines how the keyboard will be animated onto or off the screen.
public var animationOptions: UIView.AnimationOptions

• Simple example of info usege for change scrollView content inset:

self.keyboard.willShow { (info) in
    UIView.animate(withDuration: info.animationDuration, delay: 0, options: info.animationOptions, animations: {
        self.scrollView.contentInset.bottom = info.frame.height
    }, completion: nil)
}

License

Released under the MIT license. See LICENSE for details.