hmApp.registerKeyEvent(callback)

注册按键事件监听

类型

(callback: (key: Key, action: Action) => boolean) => void

参数

Callback

说明	必填	类型	默认值
按键事件回调函数，返回值 false 不跳过默认行为，true 跳过默认行为	是	(key: Key, action: Action) => boolean	-

Key

说明
支持 BACK、SELECT、HOME、UP、DOWN、SHORTCUT，具体用法参考代码示例，按键排布位置参考 实体按键

Action

说明
支持 CLICK、LONG_PRESS、DOUBLE_CLICK、RELEASE、PRESS，具体用法参考代码示例

代码示例

//注册按键监听 一个JsApp重复注册会导致上一个注册的回调失效
hmApp.registerKeyEvent(function (key, action) {
  console.log('receive key code:' + code + ' action:' + action)
  let msg = ''
  let ret = false
  switch (key) {
    case hmApp.key.BACK:
      msg = 'back.'
      break
    case hmApp.key.SELECT:
      msg = 'select.'
      break
    case hmApp.key.HOME:
      msg = 'home.'
      ret = true //跳过默认 home键处理
      break
    case hmApp.key.UP:
      msg = 'up.'
      break
    case hmApp.key.DOWN:
      msg = 'down.'
      break
    case hmApp.key.SHORTCUT:
      msg = 'shortcut.'
      break
    default:
      msg = 'none.'
      break
  }

  switch (action) {
    case hmApp.action.CLICK:
      msg = msg + 'click'
      break
    case hmApp.action.LONG_PRESS:
      msg = msg + 'longPress'
      break
    case hmApp.action.DOUBLE_CLICK:
      msg = msg + 'doubleClick'
      break
    case hmApp.action.RELEASE:
      msg = msg + 'release'
      break
    case hmApp.action.PRESS:
      msg = msg + 'press'
      break
    default:
      msg = msg + 'none'
      break
  }

  console.log('receive key:' + msg)
  return ret
})