Get iOS device keyboard height

Recently made a custom keyboard, first of all to know the iOS device a variety of keyboard height, below to say how to get the height of the keyboard.

The main is to use the keyboard pop-up notification.

1, first of all to build a project.

2, in the project-(void) viewdidload; add keyboard pop-up and hidden notifications in the function, with the following code:

1  　　     //increase monitoring to receive messages when the keyboard appears or changes2 [[Nsnotificationcenter Defaultcenter] addobserver:self3 selector: @selector (keyboardwillshow:)4 name:uikeyboardwillshownotification5                                             Object: nil];6 7    　　   //increased monitoring, when the key exits when the message is received8 [[Nsnotificationcenter Defaultcenter] addobserver:self9 selector: @selector (keyboardwillhide:)Ten name:uikeyboardwillhidenotification One                                             Object: nil];

3, when the notification is written 2 functions, in response to notification-(void) keyboardwillshow; -(void) keyboardwillhide;

In these 2 functions you can get some properties of the keyboard, the code is as follows:

1- (void) Keyboardwillshow: (Nsnotification *) Anotification2 {3     //get the height of the keyboard4     /*5 iphone 6:6 English7 2014-12-31 11:16:23.643 demo[686:41289] keyboard height is 2588 2014-12-31 11:16:23.644 demo[686:41289] keyboard width is 3759 EnglishTen 2014-12-31 11:55:21.417 demo[1102:58972] keyboard height is 216 One 2014-12-31 11:55:21.417 demo[1102:58972] keyboard width is 375 A       - iphone 6 Plus: - English: the 2014-12-31 11:31:14.669 demo[928:50593] keyboard height is 226 - 2014-12-31 11:31:14.669 demo[928:50593] keyboard width is 414 - English: - 2015-01-07 09:22:49.438 demo[622:14908] keyboard height is 271 + 2015-01-07 09:22:49.439 demo[622:14908] keyboard width is 414 -       + iphone 5: A 2014-12-31 11:19:36.452 demo[755:43233] keyboard height is 216 at 2014-12-31 11:19:36.452 demo[755:43233] keyboard width is -       - ipad Air: - 2014-12-31 11:28:32.178 demo[851:48085] keyboard height is - 2014-12-31 11:28:32.178 demo[851:48085] keyboard width is 768 -       in ipad2: - 2014-12-31 11:33:57.258 demo[1014:53043] keyboard height is to 2014-12-31 11:33:57.258 demo[1014:53043] keyboard width is 768 +      */ -Nsdictionary *userinfo =[Anotification UserInfo]; theNsvalue *avalue =[UserInfo Objectforkey:uikeyboardframeenduserinfokey]; *CGRect Keyboardrect =[Avalue Cgrectvalue]; $     intHeight =KeyboardRect.size.height;Panax Notoginseng     intwidth =KeyboardRect.size.width; -NSLog (@"keyboard height is%d", height); theNSLog (@"keyboard width is%d", width); + } A  the //called when the key exits +- (void) Keyboardwillhide: (Nsnotification *) Anotification - { $}

Get iOS device keyboard height