iOS 获取键盘高度

- (void)viewDidLoad {

[super viewDidLoad];

//增加监听，当键盘出现或改变时收出消息

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillShow:)

name:UIKeyboardWillShowNotification

object:nil];

//增加监听，当键退出时收出消息

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillHide:)

name:UIKeyboardWillHideNotification

object:nil];

}

- (void)keyboardWillShow:(NSNotification *)aNotification

{

//获取键盘的高度

/*

iphone 6:

中文

2014-12-31 11:16:23.643 Demo[686:41289] 键盘高度是  258

2014-12-31 11:16:23.644 Demo[686:41289] 键盘宽度是  375

英文

2014-12-31 11:55:21.417 Demo[1102:58972] 键盘高度是  216

2014-12-31 11:55:21.417 Demo[1102:58972] 键盘宽度是  375

iphone  6 plus：

英文：

2014-12-31 11:31:14.669 Demo[928:50593] 键盘高度是  226

2014-12-31 11:31:14.669 Demo[928:50593] 键盘宽度是  414

中文：

2015-01-07 09:22:49.438 Demo[622:14908] 键盘高度是  271

2015-01-07 09:22:49.439 Demo[622:14908] 键盘宽度是  414

iphone 5 :

2014-12-31 11:19:36.452 Demo[755:43233] 键盘高度是  216

2014-12-31 11:19:36.452 Demo[755:43233] 键盘宽度是  320

ipad Air：

2014-12-31 11:28:32.178 Demo[851:48085] 键盘高度是  264

2014-12-31 11:28:32.178 Demo[851:48085] 键盘宽度是  768

ipad2 ：

2014-12-31 11:33:57.258 Demo[1014:53043] 键盘高度是  264

2014-12-31 11:33:57.258 Demo[1014:53043] 键盘宽度是  768

*/

NSDictionary *userInfo = [aNotification userInfo];

NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

CGRect keyboardRect = [aValue CGRectValue];

int height = keyboardRect.size.height;

int width = keyboardRect.size.width;

NSLog(@"键盘高度是  %d",height);

NSLog(@"键盘宽度是  %d",width);

}

//当键退出时调用

- (void)keyboardWillHide:(NSNotification *)aNotification

{

}