Unity 如何在 iOS 新增键盘 KeyCode 响应事件

已于 2024-10-09 10:31:26 修改
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文章标签： ios unity 计算机外设
于 2024-10-08 17:24:00 首次发布
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本文链接：https://blog.youkuaiyun.com/unityofficial/article/details/142764915
版权

1.定位到文件UnityView+Keyboard.mm同如下路径:

2.打开该Objective-C脚本进行编辑,找到关键函数: createKeyboard:

- (void)createKeyboard
{
    // only English keyboard layout is supported
    NSString* baseLayout = @"1234567890-=qwertyuiop[]asdfghjkl;'\\`zxcvbnm,./!@#$%^&*()_+{}:\"|<>?~ \t\r\b\\";
    NSString* numpadLayout = @"1234567890-=*+/.\r";
    NSString* upperCaseLetters = @"QWERTYUIOPASDFGHJKLZXCVBNM";

    size_t sizeOfKeyboardCommands = baseLayout.length + numpadLayout.length + upperCaseLetters.length + 11;
    NSMutableArray* commands = [NSMutableArray arrayWithCapacity: sizeOfKeyboardCommands];

    void (^addKey)(NSString *keyName, UIKeyModifierFlags modifierFlags) = ^(NSString *keyName, UIKeyModifierFlags modifierFlags)
    {
        UIKeyCommand* command = [UIKeyCommand keyCommandWithInput: keyName modifierFlags: modifierFlags action: @selector(handleCommand:)];
#if UNITY_HAS_IOSSDK_15_0
        if (@available(iOS 15.0, tvOS 15.0, *))
            command.wantsPriorityOverSystemBehavior = YES;
#endif
        [commands addObject:command];
    };

    for (NSInteger i = 0; i < baseLayout.length; ++i)
    {
        NSString* input = [baseLayout substringWithRange: NSMakeRange(i, 1)];
        NSLog(@"%@ !!!",input);
        addKey(input, kNilOptions);
    }
    for (NSInteger i = 0; i < numpadLayout.length; ++i)
    {
        NSString* input = [numpadLayout substringWithRange: NSMakeRange(i, 1)];
        addKey(input, UIKeyModifierNumericPad);
    }
    for (NSInteger i = 0; i < upperCaseLetters.length; ++i)
    {
        NSString* input = [upperCaseLetters substringWithRange: NSMakeRange(i, 1)];
        addKey(input, UIKeyModifierShift);
    }

    // pageUp, pageDown
    addKey(@"UIKeyInputPageUp", kNilOptions);
    addKey(@"UIKeyInputPageDown", kNilOptions);

    // up, down, left, right, esc
    addKey(UIKeyInputUpArrow, kNilOptions);
    addKey(UIKeyInputDownArrow, kNilOptions);
    addKey(UIKeyInputLeftArrow, kNilOptions);
    addKey(UIKeyInputRightArrow, kNilOptions);
    addKey(UIKeyInputEscape, kNilOptions);

    // caps Lock, shift, control, option, command
    addKey(@"", UIKeyModifierAlphaShift);
    addKey(@"", UIKeyModifierShift);
    addKey(@"", UIKeyModifierControl);
    addKey(@"", UIKeyModifierAlternate);
    addKey(@"", UIKeyModifierCommand);

    keyboardCommands = commands.copy;
}

此函数由Unity定义,通过addKey函数负责初始化注册所有需要响应的按键.

   void (^addKey)(NSString *keyName, UIKeyModifierFlags modifierFlags) = ^(NSString *keyName, UIKeyModifierFlags modifierFlags)
    {
        UIKeyCommand* command = [UIKeyCommand keyCommandWithInput: keyName modifierFlags: modifierFlags action: @selector(handleCommand:)];
#if UNITY_HAS_IOSSDK_15_0
        if (@available(iOS 15.0, tvOS 15.0, *))
            command.wantsPriorityOverSystemBehavior = YES;
#endif
        [commands addObject:command];
    };

函数接受两个参数第一个是keyName表示接收的按键名称例如键盘上的a-z,第二个参数为UIKeyModifierFlags表示作为Modifier的按键种类如下:

  typedef   NS_OPTIONS(NSInteger, UIKeyModifierFlags) {
      UIKeyModifierAlphaShift     = 1 << 16,  // This bit indicates CapsLock
      UIKeyModifierShift          = 1 << 17,
      UIKeyModifierControl        = 1 << 18,
      UIKeyModifierAlternate      = 1 << 19,
      UIKeyModifierCommand        = 1 << 20,
      UIKeyModifierNumericPad     = 1 << 21,
  } API_AVAILABLE(ios(7.0));

使用时例如用户需要接收处理command a,需调用addKey(@"a", UIKeyModifierCommand); 针对于特殊按键对应的NSString存储于UIResponder.h中:

// These are pre-defined constants for use with the input property of UIKeyCommand objects.
UIKIT_EXTERN NSString *const UIKeyInputUpArrow         API_AVAILABLE(ios(7.0));
UIKIT_EXTERN NSString *const UIKeyInputDownArrow       API_AVAILABLE(ios(7.0));
UIKIT_EXTERN NSString *const UIKeyInputLeftArrow       API_AVAILABLE(ios(7.0));
UIKIT_EXTERN NSString *const UIKeyInputRightArrow      API_AVAILABLE(ios(7.0));
UIKIT_EXTERN NSString *const UIKeyInputEscape          API_AVAILABLE(ios(7.0));
UIKIT_EXTERN NSString *const UIKeyInputPageUp          API_AVAILABLE(ios(8.0));
UIKIT_EXTERN NSString *const UIKeyInputPageDown        API_AVAILABLE(ios(8.0));
UIKIT_EXTERN NSString *const UIKeyInputHome            API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputEnd             API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF1              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF1              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF2              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF3              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF4              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF5              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF6              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF7              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF8              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF9              API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF10             API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF11             API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputF12             API_AVAILABLE(ios(13.4), tvos(13.4)) API_UNAVAILABLE(watchos);
UIKIT_EXTERN NSString *const UIKeyInputDelete          API_AVAILABLE(ios(15.0), tvos(15.0)) API_UNAVAILABLE(watchos);

此文档以F1-F12按键添加为例:使用addKey(UIKeyInputF4, kNilOptions);

    addKey(UIKeyInputF1, kNilOptions);
    addKey(UIKeyInputF2, kNilOptions);
    addKey(UIKeyInputF3, kNilOptions);
    addKey(UIKeyInputF4, kNilOptions);

  1. 注册好按键后还需要在handleCommand函数中进行响应处理:

- (void)handleCommand:(UIKeyCommand *)command
{
    NSString* input = command.input;
    UIKeyModifierFlags modifierFlags = command.modifierFlags;

    char inputChar = ([input length] > 0) ? [input characterAtIndex: 0] : 0;
    int code = (int)inputChar; // ASCII code
    UnitySendKeyboardCommand(command);

    if (![self isValidCodeForButton: code])
    {
        code = 0;
    }

    if ((modifierFlags & UIKeyModifierAlphaShift) != 0)
        code = UnityStringToKey("caps lock");
    if ((modifierFlags & UIKeyModifierShift) != 0)
        code = UnityStringToKey("left shift");
    if ((modifierFlags & UIKeyModifierControl) != 0)
        code = UnityStringToKey("left ctrl");
    if ((modifierFlags & UIKeyModifierAlternate) != 0)
        code = UnityStringToKey("left alt");
    if ((modifierFlags & UIKeyModifierCommand) != 0)
        code = UnityStringToKey("left cmd");

    if ((modifierFlags & UIKeyModifierNumericPad) != 0)
    {
        switch (inputChar)
        {
            case '0':
                code = UnityStringToKey("[0]");
                break;
            case '1':
                code = UnityStringToKey("[1]");
                break;
            case '2':
                code = UnityStringToKey("[2]");
                break;
            case '3':
                code = UnityStringToKey("[3]");
                break;
            case '4':
                code = UnityStringToKey("[4]");
                break;
            case '5':
                code = UnityStringToKey("[5]");
                break;
            case '6':
                code = UnityStringToKey("[6]");
                break;
            case '7':
                code = UnityStringToKey("[7]");
                break;
            case '8':
                code = UnityStringToKey("[8]");
                break;
            case '9':
                code = UnityStringToKey("[9]");
                break;
            case '-':
                code = UnityStringToKey("[-]");
                break;
            case '=':
                code = UnityStringToKey("equals");
                break;
            case '*':
                code = UnityStringToKey("[*]");
                break;
            case '+':
                code = UnityStringToKey("[+]");
                break;
            case '/':
                code = UnityStringToKey("[/]");
                break;
            case '.':
                code = UnityStringToKey("[.]");
                break;
            case '\r':
                code = UnityStringToKey("enter");
                break;
            default:
                break;
        }
    }

    if (input == UIKeyInputUpArrow)
        code = UnityStringToKey("up");
    else if (input == UIKeyInputDownArrow)
        code = UnityStringToKey("down");
    else if (input == UIKeyInputRightArrow)
        code = UnityStringToKey("right");
    else if (input == UIKeyInputLeftArrow)
        code = UnityStringToKey("left");
    else if (input == UIKeyInputEscape)
        code = UnityStringToKey("escape");
    else if ([input isEqualToString: @"UIKeyInputPageUp"])
        code = UnityStringToKey("page up");
    else if ([input isEqualToString: @"UIKeyInputPageDown"])
        code = UnityStringToKey("page down");

    KeyMap::iterator item = GetKeyMap().find(code);
    if (item == GetKeyMap().end())
    {
        // New key is down, register it and its time
        UnitySetKeyboardKeyState(code, true);
        GetKeyMap()[code] = GetTimeInSeconds();
    }
    else
    {
        // Still holding the key, update its time
        item->second = GetTimeInSeconds();
    }
}

函数中input表示createKeyboard函数注册对应的keyName,modifierFlags表示注册时传入的modifierFlags.函数中的Code对应Unity的KeyCodeEnum:

using System;

namespace UnityEngine
{
    // Key codes returned by Event.keyCode. These map directly to a physical key on the keyboard.
    public enum KeyCode
    {
        // Not assigned (never returned as the result of a keystroke)
        None = 0,
        // The backspace key
        Backspace       = 8,
        // The forward delete key
        Delete      = 127,
        // The tab key
        Tab     = 9,
        // The Clear key
        Clear       = 12,
        // Return key
        Return      = 13,
        // Pause on PC machines
        Pause       = 19,
        // Escape key
        Escape      = 27,
        // Space key
        Space       = 32,

        // Numeric keypad 0
        Keypad0     = 256,
        // Numeric keypad 1
        Keypad1     = 257,

前添加判断并给code进行赋值即可,F1-F12对应282-294以此为例代码如下:

   if (input == UIKeyInputF1)
        code = 282;
    else if (input == UIKeyInputF2)
        code = 283;
    else if (input == UIKeyInputF3)
        code = 284;
 

  1.  
    测试结果如下:
     
 

 


                

        

    

  



    



                



	

		

			

				
					
Unity中的键位KeyCode

				
			

			

				

					🌟【AI炼丹师 | 你的数字技术搭子】 大二解锁3200+道友同行👾
				

				

					09-04
					
					5846
					
				

			

		

		

			
				
Unity中的键位KeyCode使用情况

			
		

	



                

            
              



	

		

			

				
					
Unity KeyCode键值

				
			

			

				

					weixin_46521624的博客
				

				

					12-07
					
					5580
					
				

			

		

		

			
				
Unity KeyCoed




Input





GeyKey
当通过名称指定的按键被用户按住时返回true


GetKeyDown
当用户按下指定名称的按键时的那一帧返回true。


GetKeyUp
在用户释放给定名字的按键的那一帧返回true。






KeyCode
Value




None
Not assigned (never is pressed)未分配（永不被按下）。


Backspace
The backspace key //退格键。


Delete
The fo

			
		

	



              


  
              

                


	

		

			

				
					
【Unity3D编辑器开发】Unity3D中实现查看键盘对应KeyCode值面板【方便开发】

				
			

			

				

					优快云博客专家，Unity3D高级软件工程师，《Unity 3D从入门到实战》作者。
				

				

					10-09
					
					2665
					
				

			

		

		

			
				
在开发中，会遇到要使用监控键盘输入的KeyCode值来执行代码的情况。Debug.Log("点击了键盘W");但是，如果是一些不常用的键位，比如说{}[]，这些KeyCode值就比较难查看了，因为API是这样的：根本不知道这英文还是数字代表了啥，于是就诞生了，在Unity做一个键盘，然后在键盘的键位下标注每个键位的KeyCode值，方便开发。小明：键位没有对齐，逼死强迫症啊喂！张三：不重要！不重要！

			
		

	





	

		

			

				
					
【Unity笔记】实现可视化配置的Unity按键输入管理器（按下/长按/松开事件 + UnityEvent绑定）

					
最新发布

				
			

			

				

					一个XR（AR|VR|MR）程序猿的博客（EQ-雪梨蛋花汤）
				

				

					04-16
					
					795
					
				

			

		

		

			
				
本文将记录如何实现一个支持按下、长按、松开事件、可视化配置和动态启用的多键位监听组件，并通过 UnityEvent 实现无代码事件绑定，极大提升输入逻辑的灵活性与通用性。

			
		

	



		

			
		



	

		

			

				
					
unity keycode对应的键值

				
			

			

				

					weixin_44950382的博客
				

				

					11-22
					
					2030
					
				

			

		

		

			
				
unitykeycod键值对应

			
		

	





	

		

			

				
					
Unity键值(KeyCode)

				
			

			

				

					weixin_33912445的博客
				

				

					10-19
					
					602
					
				

			

		

		

			
				
  Unity的Input管理      keyCode示例 keyCode Demofunction OnGUI(){
    var e:Event=Event.current;
    if(e.isKey){
        Debug.Log("key:"+e.keyCode);
    }
}
按钮检测结果
Unity键值对应表



.csharpcode, ....

			
		

	





	

		

			

				
					
【Unity3D视频播放艺术】：AVProVideo实现高质视频播放的秘诀

				
			

			

				

					
				

			

		

		

			
				
本文详细探讨了AVProVideo在Unity3D中的应用及其在视频播放技术中的重要性。文章首先介绍了AVProVideo的基本功能和核心优势，然后深入实践，指导读者如何在Unity项目中安装、配置和控制视频播放，同时阐述了性能优化...

			
		

	





	

		

			

				
					
unity3d  KeyCode各键值说明

					
热门推荐

				
			

			

				

					luxiaoyu_sdc的专栏
				

				

					10-14
					
					1万+
					
				

			

		

		

			
				
KeyCode ：KeyCode是由Event.keyCode返回的。这些直接映射到键盘上的物理键。

 值        对应键
 Backspace     退格键
 Delete      Delete键
 Tab        TabTab键
 Clear  Clear键
 Return  回车键
 Pause  暂停键
 Escape  ESC键
 Space  空格

			
		

	





	

		

			

				
					
Unity Keycode表

				
			

			

				

					10-06
				

			

		

		

			
				
keycode   8 = BackSpace
keycode   9 = Tab Tab
keycode  12 = Clear
keycode  13 = Enter
keycode  16 = Shift_L
keycode  17 = Control_L
keycode  18 = Alt_L
keycode  19 = Pause
keycode  20 = Caps_Lock
keycode  27 = Escape Escape
keycode  32 = space space
keycode  33 = Prior
keycode  34 = Next
keycode  35 = End
keycode  36 = Home
keycode  37 = Left
只是keycode表，内容不多很实用的

			
		

	





	

		

			

				
					
Unity 之 KeyCode类

				
			

			

				

					q123_xi的博客
				

				

					10-25
					
					3757
					
				

			

		

		

			
				
一、通过键盘输入

1、Input.GetKey(KeyCode.Q)：按键按下期间返回true（长按Q键有效）。

2、Input.GetKeyDown(KeyCode.W)：按键按下的第一帧返回true（按下W键瞬间有效）。

3、Input.GetKeyUp(KeyCode.E)：按键松开的第一帧返回true（抬起E键瞬间有效）。



填坑：项目中在OnMouseDown方法中用到了In...

			
		

	





	

		

			

				
					
[转]Unity3D keycode 参数表 按键对应Keycode名称

				
			

			

				

					战斗果冻的训练中心
				

				

					02-18
					
					1437
					
				

			

		

		

			
				
来源:https://docs.unity3d.com/ScriptReference/KeyCode.html
Key codes returned by Event.keyCode. These map directly to a physical key on the keyboard.
Key codes can be used to detect key down and key up ...

			
		

	





	

		

			

				
					
unity3d手机开发Android Keycode 最新对照表

				
			

			

				

					08-26
				

			

		

		

			
				
unity3d手机开发Android Keycode 最新对照表 本人测试可用！

			
		

	





	

		

			

				
					
常用keycode和ASCII码

				
			

			

				

					08-11
				

			

		

		

			
				
常用keycode键盘码和ASCII码常用keycode键盘码和ASCII码

			
		

	





	

		

			

				
					
unity监听键盘按键

				
			

			

				

					a554671102的博客
				

				

					10-27
					
					295
					
				

			

		

		

			
				
放在Update里面

        if (Input.anyKeyDown)
        {
            foreach (KeyCode keyCode in Enum.GetValues(typeof(KeyCode)))
            {
                if (Input.GetKeyDown(keyCode))
  ...

			
		

	





	

		

			

				
					
KeyCode 键码

				
			

			

				

					weixin_30858241的博客
				

				

					03-09
					
					672
					
				

			

		

		

			
				
KeyCode 键码
Values 值



None
Not assigned (never is pressed)未分配（永不被按下）。 


Backspace
The backspace key //退格键。


Delete
The forward delete key //正向删除键。


Tab
The tab key //制表键。


Cl...

			
		

	





	

		

			

				
					
[Unity] Input 在Android 和 iOS 上可能会用到的各种开关和效果

				
			

			

				

					hhh314159的博客
				

				

					06-19
					
					923
					
				

			

		

		

			
				
Android 虚拟返回键

	private void Update()
	{
		if (Input.GetKeyUp(KeyCode.Escape))
		{
			// do something
		}
	}


多指触控开关

UnityEngine.Input.multiTouchEnabled


鼠标或者是单击的的屏幕坐标

UnityEngine.Input.mousePosition


陀螺仪开关

SystemInfo.supportsGyroscope


在安卓上是否支持返回键.

			
		

	





	

		

			

				
					
键盘按钮keyCode大全

				
			

			

				

					baiyangok的专栏
				

				

					12-16
					
					1164
					
				

			

		

		

			
				
字母和数字键的键码值(keyCode)



按键

键码

按键

键码

按键

键码

按键

键码





A

65

J

74

S

83

1

49



B

66

K

75

T

84

2

50



C

67

L

76



			
		

	





	

		

			

				
					
javascript 键盘表

				
			

			

				

					我的IT博客
				

				

					07-02
					
					396
					
				

			

		

		

			
				
keycode 0 = keycode 1 = keycode 2 = keycode 3 = keycode 4 = keycode 5 = keycode 6 = keycode 7 = keycode 8 = BackSpace BackSpace keycode 9 = Tab Tab keycode 10 = keycode 11 = keycode 12 = Clear keycode...

			
		

	





	

		

			

				
					

				
			

			

				

					
				

			

		

		

			
				

			
		

	



              




          




        



    





    



      

      

        
      

      





	

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