有时候UI设计的输入框太低，我们点击输入框弹出键盘可能会挡住输入框，所以要让视图上移；
代码如下：
#pragma mark - 键盘高度
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardHide:) name:UIKeyboardWillHideNotification object:nil];
}
/*!
* @brief 显示键盘及设置高度
*
* @param note 通知消息-需要设置的高度
*/
-(void)keyboardShow:(NSNotification *)note
{
CGRect keyBoardRect=[note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
CGFloat deltaY=keyBoardRect.size.height;
[UIView animateWithDuration:[note.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue] animations:^{
self.view.transform=CGAffineTransformMakeTranslation(0, -deltaY);
}];
}
/*!
* @brief 隐藏键盘及设置高度
*
* @param note 通知消息-需要设置的高度
*/
-(void)keyboardHide:(NSNotification *)note
{
[UIView animateWithDuration:[note.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue] animations:^{
self.view.transform = CGAffineTransformIdentity;
}];
}
这段代码表示点击输入框，整个self.view会根据键盘高度上移，然后随着键盘消失，self.view回到原来位置(直接复制粘贴代码即可)
