How to detect Orientation Change in Custom Keyboard Extension in iOS 8?

Question

In Custom Keyboard Extension , we can't use

`didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation`  

and sharedApplication.

I need to detect portrait or landscape in keyboard when rotate.

How can i detect when orientation change in Custom Keyboard extension?

Answer 1

In order to update your custom keyboard when the orientation changes, override viewDidLayoutSubviews in the UIInputViewController. As far as I can tell, when a rotation occurs this method is always called.

Additionally, as the traditional [UIApplication sharedApplication] statusBarOrientation] doesn't work, to determine the current orientation use the following snippet:

if([UIScreen mainScreen].bounds.size.width < [UIScreen mainScreen].bounds.size.height){     //Keyboard is in Portrait } else{     //Keyboard is in Landscape } 

Hopefully this helps!

Answer 2

Non-deprecated and will work on any device screen size (including future screen sizes Apple will be releasing this year).

In CustomKeyboard ViewController.m:

-(void)viewDidLayoutSubviews {     NSLog(@"%@", (self.view.frame.size.width == ([[UIScreen mainScreen] bounds].size.width*([[UIScreen mainScreen] bounds].size.width<[[UIScreen mainScreen] bounds].size.height))+([[UIScreen mainScreen] bounds].size.height*([[UIScreen mainScreen] bounds].size.width>[[UIScreen mainScreen] bounds].size.height))) ? @"Portrait" : @"Landscape"); } 

done.

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Or... for a more easy to read version of this code:

-(void)viewDidLayoutSubviews {          int appExtensionWidth = (int)round(self.view.frame.size.width);          int possibleScreenWidthValue1 = (int)round([[UIScreen mainScreen] bounds].size.width);     int possibleScreenWidthValue2 = (int)round([[UIScreen mainScreen] bounds].size.height);          int screenWidthValue;          if (possibleScreenWidthValue1 < possibleScreenWidthValue2) {         screenWidthValue = possibleScreenWidthValue1;     } else {         screenWidthValue = possibleScreenWidthValue2;     }          if (appExtensionWidth == screenWidthValue) {         NSLog(@"portrait");     } else {         NSLog(@"landscape");     } }