NgKeyboardTracker

Slider Textfield Textview Views

NgKeyboardTracker

March 11, 2024

Objective-c library for tracking keyboard in iOS apps.

Adding to your project


                                              
                                                pod ‘NgKeyboardTracker’

To manually add to your projects:

Add files in NgKeyboardTracker folder to your project.
Add these frameworks to your project: UIKit.

Features

NgKeyboardTracker encapsulates keyboard tracking for iOS apps. It provides convenience to query keyboard’s properties anywhere in your application.

You can also use NgKeyboardTracker to implement iMessage’s text input behavior on iOS 7 (UIScrollViewKeyboardDismissModeInteractive + persistent inputAccessoryView) using NgPseudoInputAccessoryViewCoordinator.

Usage

Start and stop keyboard tracking

In your application delegate:


                                              
                                                – (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

[[NgKeyboardTracker sharedTracker] start]; // start tracking

return YES;

}
– (void)applicationWillTerminate:(UIApplication *)application {

// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.

[[NgKeyboardTracker sharedTracker] stop]; // stop tracking

}

Responding to keyboard updates

Implement NgKeyboardTrackerDelegate protocol.
Register as delegate by calling -addDelegate: method
Make sure to call -removeDelegate: to stop receiving keyboard updates

Keyboard tracker’s properties:

appearanceState : current appearance state
beginFrame : last known begin frame
endFrame: last known frame
currentFrame: last known current keyboard’s frame
animationDuration: last known animation duration
animationCurve: last known animation curve
animationOptions : derived from animationCurve for convenience

P.S. keyboard’s frame.size.height system’s keyboard height plus inputAccessoryView height.

Pseudo input accessory view coordinator

NgPseudoInputAccessoryViewCoordinator is NgKeyboardTracker extension that makes it easier to implement iMessage’s text input behavior in iOS 7 with UIScrollViewKeyboardDismissModeInteractive and persistent inputAccessoryView.

The view controller: