上一版的实现：https://testerhome.com/topics/7785 中暴露了许多问题，尤其是方案不统一的做法非常不好，经过 Macaca 开发小组讨论，按照各端统一的做法来实现了 keys。
首先还是升级驱动版本到最新，然后使用 Macaca 提供的 Node.js Java 或 Python 语言包，调用keys即可，例如：
const KEY_MAP = require('webdriver-keycode');
driver.keys(`send keys: ${KEY_MAP.HOME_SCREEN}`) // 输入“send keys: ”字符后会按HOME_SCREEN
更多参考文档请见：https://github.com/alibaba/macaca/issues/487，此文档会随着功能实现同步更新
\uE002 "HELP" => 259 (0x00000103)
\uE003 "BACK_SPACE" => 67 (0x00000043)
\uE004 "TAB" => 61 (0x0000003d)
\uE005 "CLEAR" => 28 (0x0000001c)
\uE007 "ENTER" => 66 (0x00000042)
\uE008 "SHIFT" => 59 (0x0000003b)
\uE009 "CONTROL" => 113 (0x00000071)
\uE00A "ALT" => 57 (0x00000039)
\uE00B "PAUSE" => 121 (0x00000079)
\uE00C "ESCAPE" => 111 (0x0000006f)
\uE00E "PAGE_UP" => 92 (0x0000005c)
\uE00F "PAGE_DOWN" => 93 (0x0000005d)
\uE010 "END" => 123 (0x0000007b)
\uE011 "HOME" => 122 (0x0000007a)
\uE012 "ARROW_LEFT" => 21 (0x00000015)
\uE013 "ARROW_UP" => 19 (0x00000013)
\uE014 "ARROW_RIGHT" => 22 (0x00000016)
\uE015 "ARROW_DOWN" => 20 (0x00000014)
\uE016 "INSERT" => 124 (0x0000007c)
\uE017 "DELETE" => 112 (0x00000070)
\uE031 "F1" => 131 (0x00000083)
\uE032 "F2" => 132 (0x00000084)
\uE033 "F3" => 133 (0x00000085)
\uE034 "F4" => 134 (0x00000086)
\uE035 "F5" => 135 (0x00000087)
\uE036 "F6" => 136 (0x00000088)
\uE037 "F7" => 137 (0x00000089)
\uE038 "F8" => 138 (0x0000008a)
\uE039 "F9" => 139 (0x0000008b)
\uE03A "F10" => 140 (0x0000008c)
\uE03B "F11" => 141 (0x0000008d)
\uE03C "F12" => 142 (0x0000008e)
\uE03D "META" => 117 (0x00000075)
\uE101 "POWER 电源键" => 26 (0x0000001a)
\uE102 "VOLUME_UP 音量加" => 24 (0x00000018)
\uE103 "VOLUME_DOWN 音量减" => 25 (0x00000019)
\uE104 "VOLUME_MUTE 禁音" => 164 (0x000000a4)
\uE105 "HOME_SCREEN HOME 键" => 3 (0x00000003)
\uE106 "BACK BACK 键" => 4 (0x00000004)
\uE107 "MENU MENU 键" => 82 (0x00000052)
\uE108 "CAMERA 拍照键" => 27 (0x0000001b)
\uE109 "CALL 电话键" => 5 (0x00000005)
\uE10A "END_CALL 结束电话键" => 6 (0x00000006)
\uE10B "SEARCH 搜索键" => 84 (0x00000054)
\uE10C "DPAD_LEFT 导航左键" => 21 (0x00000015)
\uE10D "DPAD_UP 导航上键" => 19 (0x00000013)
\uE10E "DPAD_RIGHT 导航右键" => 22 (0x00000016)
\uE10F "DPAD_DOWN 导航下键" => 20 (0x00000014)
\uE110 "DPAD_CENTER 导航确定键" => 23 (0x00000017)
\uE105 "HOME_SCREEN HOME 键"