iOS 监测键盘消失，出现

//检测到有键盘的时候 页面上移

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{

if (textField == nameTF) {

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];

}

return YES;

}

- (void)keyboardWillShow:(NSNotification *)notification{

whiteView.frame = CGRectMake(0,self.frame.size.height/16, self.frame.size.width/2, self.frame.size.height/8*3);

}

//键盘消失

- (void)keyboardWillHide:(NSNotification *)notification {

whiteView.frame =CGRectMake(0,self.frame.size.height/16*5, self.frame.size.width/2, self.frame.size.height/8*3);

}