iOS 键盘

typedef enum {
UIKeyboardTypeDefault,     　         默认键盘，支持所有字符
UIKeyboardTypeASCIICapable,　         支持ASCII的默认键盘
UIKeyboardTypeNumbersAndPunctuation,　标准电话键盘，支持＋＊＃字符
UIKeyboardTypeURL,                    URL键盘，支持.com按钮 只支持URL字符
UIKeyboardTypeNumberPad,            　     数字键盘
UIKeyboardTypePhonePad,　 　               电话键盘
UIKeyboardTypeNamePhonePad, 　         电话键盘，也支持输入人名
UIKeyboardTypeEmailAddress, 　             用于输入电子 邮件地址的键盘
UIKeyboardTypeDecimalPad,   　             数字键盘 有数字和小数点
UIKeyboardTypeTwitter,      　         优化的键盘，方便输入@、#字符
UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable,
} UIKeyboardType;

//键盘的出现
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil];
//键盘的隐藏
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasDismiss:) name:UIKeyboardDidHideNotification object:nil];

//实现当键盘出现的时候计算键盘的高度大小。用于输入框显示位置
- (void)keyboardWasShown:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];
//kbSize为键盘尺寸
CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;//键盘的高度
if(kbSize.height == 216)
{
keyboardhight = 0;
}
else
{
keyboardhight = 36;   //252 - 216 系统键盘的两个不同高度
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}

//输入结束时调用动画（把按键。背景。输入框都移下去）
-(void)textViewDidEndEditing:(UITextView *)textView
{
NSLog(@"tabtabtab");
[self endEditAnimation];

//释放
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}