react-native-router-flux，如何获取当前场景关键

Question

嘿，我在尝试使用react-native-router-flux时获取当前场景关键。

我的路线文件：

const AppRouter = connect()(Router)

class Routes extends Component {
  render() {
    function selector(props) {
      console.log(props)
      // GoogleAnalytics.trackView(props.navigationState)
      return props.auth.isLoggedIn ? (props.auth.isVerified? 'home': 'authenticate') : 'authenticate'
    }

    const component = connect(state => ({
      auth: state.auth,
    }))(Switch)

    return (
      <AppRouter>
        <Scene key="root" component={component} tabs selector={selector} hideNavBar hideTabBar>
          <Scene key="authenticate" hideTabBar>
            <Scene type="replace" key="login" title="Login" initial component={GradientBackground(LoginScreen)} hideNavBar/>
            <Scene type="replace" key="register" component={GradientBackground(RegisterScreen)} hideNavBar/>
            <Scene type="replace" key="forgotPassword" title="forgotPassword" component={GradientBackground(ForgotPasswordScreen)} hideNavBar/>
            <Scene type="replace" key="emailConfirmation" component={GradientBackground(EmailConfirmationScreen)} hideNavBar/>
          </Scene>
          <Scene key="home" component={NavigationDrawer} type="replace">
            {require('./scenes/home')}
          </Scene>
        </Scene>
      </AppRouter>
    )
  }
}

export default Routes

如您所见，我正在尝试将当前场景名称发送给Google Analytics（分析）以进行跟踪，但是我似乎无法获取当前显示的场景关键，有什么想法吗？

Answer 1

我最终实现了一个中间减速器：

const AppRouter = connect()(Router)

class Routes extends Component {

  render() {
    let catchInitialState = false

    function selector(props) {
      return props.auth.isLoggedIn ? (props.auth.isVerified? 'home': 'authenticate') : 'authenticate'
    }

    const reducerCreate = params => {
      const defaultReducer = Reducer(params)
      return (state, action) => {
        if(action.type == 'RootContainerInitialAction') {
          catchInitialState = true
        }

        if(catchInitialState && action.type != 'RootContainerInitialAction') {
          GoogleAnalytics.trackScreenView(action.scene.sceneKey)
          catchInitialState = false
        }

        if(action.type == 'REACT_NATIVE_ROUTER_FLUX_REPLACE') {
          GoogleAnalytics.trackScreenView(action.key)
        }

        return defaultReducer(state, action)
      }
    }

    const component = connect(state => ({
      auth: state.auth,
    }))(Switch)

    return (
      <AppRouter createReducer={reducerCreate}>
        <Scene key="root" component={component} tabs selector={selector} hideNavBar hideTabBar>
          <Scene key="authenticate" hideTabBar>
            <Scene type="replace" key="login" initial component={GradientBackground(LoginScreen)} hideNavBar/>
            <Scene type="replace" key="register" component={GradientBackground(RegisterScreen)} hideNavBar/>
            <Scene type="replace" key="forgotPassword" component={GradientBackground(ForgotPasswordScreen)} hideNavBar/>
            <Scene type="replace" key="emailConfirmation" component={GradientBackground(EmailConfirmationScreen)} hideNavBar/>
          </Scene>
          <Scene key="home" component={NavigationDrawer} type="replace">
            {require('./scenes/home')}
          </Scene>
        </Scene>
      </AppRouter>
    )
  }
}

export default Routes