如何获得iOS 8.3表情符号键盘高度？

Question

我可以处理两个事件:键盘显示和键盘隐藏时.在iOS 8.2及更早版本中,一切都运行良好.

但是如何在更改键盘语言时处理事件？当您将英文键盘更改为表情符号键盘时,表情符号键盘的高度(在ios 8.3中)更大并且隐藏了内容.

或者你有一个解决方案如何控制iOS 8.3表情符号键盘高度？

Answer 1

好.所以看着我的旧代码,我记得,我不使用2个观察者(UIKeyboardDidShowNotification/ UIKeyboardDidHideNotification).我使用单个观察者(UIKeyboardWillChangeFrameNotification),即每个事件被触发:键盘隐藏,键盘显示,键盘更换框架.

在我的例子中,文本框和发送按钮嵌套在一个UIView,这是视图添加在其中view的UIViewController所有其他内容.

我添加观察者viewDidAppear并删除观察者viewWillDisappear.(以避免在视图未激活时触发任何通知).

以上信息对您的情况不是必需的,只是为了提供信息而添加它.相关代码如下:

添加观察员:

- (void) viewDidAppear:(BOOL)animated {

    [super viewDidAppear:animated];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];
}

手柄通知:

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

    NSDictionary* notificationInfo = [notification userInfo];

    CGRect keyboardFrame = [[notificationInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];

    [UIView animateWithDuration:[[notificationInfo valueForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue]
                          delay:0
                        options:[[notificationInfo valueForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue]
                     animations:^{

                         CGRect frame = self.textViewContainer.frame;
                         frame.origin.y = keyboardFrame.origin.y - frame.size.height;
                         self.textViewContainer.frame = frame;

                     } completion:nil];
}

您可能需要对frame.origin.y...线进行一些调整才能进行正确的计算.我不知道你UITabBarController底部是否有任何一根柱子.这里最安全的赌注是:

frame.origin.y = self.view.frame.size.height - keyboardFrame.size.height - X;

X如果您的VC覆盖整个屏幕,那么其中0.如果没有,请使用任何底栏的高度.

Answer 2

我有同样的问题.只需用UIKeyboardFrameEndUserInfoKey替换UIKeyboardFrameBeginUserInfoKey即可.:-)

它对我有用.

Answer 3

值得注意的是，表情符号键盘与启用建议文本的标准键盘高度相同。

要正确确定键盘高度并调整视图，请添加以下观察者：

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];

然后我使用以下方法来动画键盘调整。实际上，您所需要的只是keyboardBounds对象，但如果您碰巧使用 AutoLayout，则可以这样做：

- (void)keyboardDidShow:(NSNotification *)notification
{
    [self scrollControlBarTo:notification up:YES];
}

-(void)keyboardDidHide:(NSNotification *)notification
{
    [self scrollControlBarTo:notification up:NO];
}

- (void)scrollControlBarTo:(NSNotification *)notification up:(BOOL)up
{
    [_keyboardControlsBar layoutIfNeeded];
    CGRect keyboardBounds;
    NSDictionary *info = [notification userInfo];
    NSNumber *number = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    double duration = [number doubleValue];
    [[info objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardBounds];
    UIViewAnimationCurve curve = [[info objectForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue];

    [UIView animateWithDuration:duration
                          delay:0
                        options:UIViewAnimationOptionBeginFromCurrentState
                     animations:^{
                         [UIView setAnimationCurve:curve];
                         _keyboardControlsBarBottomConstraint.constant = (up) ? keyboardBounds.size.height : 0;
                         [self.view layoutIfNeeded];
                     } completion:nil];
}