如何通过新键盘类型的大小、类型、建议栏高度来检测键盘类型的变化？

Question

是否有任何方法可以检测键盘类型随大小、类型和建议栏高度的变化，例如从英文键盘更改为包含某种建议栏的印地语（见屏幕截图）。

普通英文键盘

First Problem

更改为印地语 LIPI 后 - 当我刚刚更改时，一切都很好，因为英语和印地语键盘的大小相同，但在开始输入印地语 Lipi 后建议覆盖 TextField

Second Problem

更改为 Emoji 后 - Emoji 键盘比英文键盘高一点，所以键盘再次覆盖 TextField。

Answer 1

您需要获取屏幕上显示的键盘高度

发送 UIKeyboardWillShowNotification 时键盘高度为 224

针对 UIKeyboardWillShowNotification 和 UIKeyboardWillHideNotification 通知注册观察员：

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

设置键盘高度的全局变量：

CGFloat _currentKeyboardHeight = 0.0f;

实施 keyboardWillShow 和 keyboardWillHide 以响应当前键盘高度的变化：

- (void)keyboardWillShow:(NSNotification*)notification {
   NSDictionary *info = [notification userInfo];
   CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
   CGFloat deltaHeight = kbSize.height - _currentKeyboardHeight; 
   // Write code to adjust views accordingly using deltaHeight
   _currentKeyboardHeight = kbSize.height;
}

- (void)keyboardWillHide:(NSNotification*)notification {
   NSDictionary *info = [notification userInfo];
   CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
   // Write code to adjust views accordingly using kbSize.height
   _currentKeyboardHeight = 0.0f;
}

Answer 2

为名为 "UIKeyboardWillChangeFrameNotification" 的通知添加观察者。

通知的 "userInfo" 字典在屏幕上有多个键盘框。

添加观察者

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

带有记录器的选择器

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

    NSLog(@"%@", notification);
}

userInfo字典内容

userInfo = {
    UIKeyboardAnimationCurveUserInfoKey = 7;
    UIKeyboardAnimationDurationUserInfoKey = 0;
    UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {320, 216}}";
    UIKeyboardCenterBeginUserInfoKey = "NSPoint: {160, 441.5}";
    UIKeyboardCenterEndUserInfoKey = "NSPoint: {160, 460}";
    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 315}, {320, 253}}";
    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 352}, {320, 216}}";
    UIKeyboardIsLocalUserInfoKey = 1;
}}

Answer 3

我也遇到了同样的问题。我用下面的代码解决了

CGSize keyboardSize = [aNotification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue].size;

使用 UIKeyboardFrameEndUserInfoKey 而不是使用 UIKeyboardFrameBeginUserInfoKey。

Answer 4

Swift 4

注册观察员

NotificationCenter.default.addObserver(self,selector:#selector(KeyboardWillChangeFrame),name:NSNotification.Name.UIKeyboardWillChangeFrame,object: nil)

函数

    @objc func KeyboardWillChangeFrame(_ notification: Notification){
    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
        let keyboardHeight = keyboardSize.height
        print("New Keyboard Height:",keyboardHeight)
     }
}

如何通过新键盘类型的大小、类型、建议栏高度来检测键盘类型的变化？

How to detect keyboard type changes with the size, type, suggestion bar height of new keyboard type?

objective-c

uikeyboard

ios

custom-keyboard