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Latest commit e32426f Sep 23, 2017 @totocaster totocaster committed on GitHub Update README.md

README.md

Typist

Swift Version Platform CocoaPods Compatible Carthage compatible Twitter

Typist is a small, drop-in Swift UIKit keyboard manager for iOS apps. It helps you manage keyboard's screen presence and behavior without notification center and Objective-C.


Usage

Declare what should happen on what event and start() listening to keyboard events. That's it.

let keyboard = Typist.shared // use `Typist()` whenever you can, see note on singleton usage below

func configureKeyboard() {

    keyboard
        .on(event: .didShow) { (options) in
            print("New Keyboard Frame is \(options.endFrame).")
        }
        .on(event: .didHide) { (options) in
            print("It took \(options.animationDuration) seconds to animate keyboard out.")
        }
        .start()

}

You must call start() for callbacks to be triggered. Calling stop() on instance will stop callbacks from triggering, but callbacks themselves won't be dismissed, thus you can resume event callbacks by calling start() again.

To remove all event callbacks, call clear().

On Singleton Usage

Usage of shared singleton, considered to be OK for convenient access to instance. However, it is strongly recommended to instantiate dedicated Typist() for each usage (in UIViewController, most likely). Do not use singleton when two or more objects using Typist.shared are presented on screen simultaneously, as it will cause one of the controllers to fail receiving keyboard events.

Event Callback Options

Every event callback has a parameter of Typist.KeyboardOptions type. It is an inert/immutable struct which carries all data that keyboard has at the event of happening:

  • belongsToCurrentAppBool that identifies whether the keyboard belongs to the current app. With multitasking on iPad, all visible apps are notified when the keyboard appears and disappears. The value is true for the app that caused the keyboard to appear and false for any other apps.
  • startFrameCGRect that identifies the start frame of the keyboard in screen coordinates. These coordinates do not take into account any rotation factors applied to the view’s contents as a result of interface orientation changes. Thus, you may need to convert the rectangle to view coordinates (using the convert(CGRect, from: UIView?) method) before using it.
  • endFrameCGRect that identifies the end frame of the keyboard in screen coordinates. These coordinates do not take into account any rotation factors applied to the view’s contents as a result of interface orientation changes. Thus, you may need to convert the rectangle to view coordinates (using the convert(CGRect, from: UIView?) method) before using it.
  • animationCurveUIViewAnimationCurve constant that defines how the keyboard will be animated onto or off the screen.
  • animationDurationDouble that identifies the duration of the animation in seconds.

Events

Following keyboard events are supported:

  • willShow
  • didShow
  • willHide
  • didHide
  • willChangeFrame
  • didChangeFrame

If you declare two closures on same event, only latter will be executed.


Installation

CocoaPods

You can use CocoaPods to install Typist by adding it to your Podfile:

platform :ios, '8.0'
use_frameworks!
pod 'Typist'

Import Typist wherever you plan to listen to keyboard events. Usually in your UIViewController subclasses.

import UIKit
import Typist

Carthage

Create a Cartfile that lists the framework and run carthage update. Follow the instructions to add $(SRCROOT)/Carthage/Build/iOS/Typist.framework to an iOS project.

github "totocaster/Typist"

Manually

Download and drop Typist.swift in your project.


My thanks to Jake Marsh for featuring Typist on Little Bites of Cocoa #282: Taming the Keyboard with Typist ⌨️. It made my day.


License

Typist is released under the MIT license. See LICENSE for details.