Javascript React native redux saga TypeError
首先,我为这篇长文章道歉,我尽量缩短。 我试图通过saga分派一个操作,但得到的是TypeError:resultFunc.apply不是函数错误 该函数在应用程序缩减器中设置两个变量: isFirstTimer:错误 应用语言:英语 Store/App/Actions.js Store/App/Reducers.js Store/App/Selector.js Sagas/AppSaga.js 注意:选择器中的两个变量不会登录Reactotron Sagas/index.js 在我的rootScreen.js中,我根据上述firstTime变量有条件地进行渲染 最终结果是: 如果我排除该错误,应用程序将不再呈现第一个块,它将呈现AppNavigator问题在于getFirstTimer选择器-createSelector的第二个参数应该是您在错误中看到的resultFunc,该参数将获取它所依赖的其他选择器的结果并返回一个值。看见更新getFirstTimer应解决以下问题:Javascript React native redux saga TypeError,javascript,react-native,redux,react-redux,redux-saga,Javascript,React Native,Redux,React Redux,Redux Saga,首先,我为这篇长文章道歉,我尽量缩短。 我试图通过saga分派一个操作,但得到的是TypeError:resultFunc.apply不是函数错误 该函数在应用程序缩减器中设置两个变量: isFirstTimer:错误 应用语言:英语 Store/App/Actions.js Store/App/Reducers.js Store/App/Selector.js Sagas/AppSaga.js 注意:选择器中的两个变量不会登录Reactotron Sagas/index.js 在我的rootS
import { createSelector } from 'reselect'
const isFristTimer = (state) => state.isFristTimer
const language = (state) => state.language
export const getFirstTimer = createSelector(
[isFristTimer, language],
// here is where the result func is added to the selector definition
(isFristTimer, language) => ({
isFristTimer,
language,
})
)
import { INITIAL_STATE } from './InitialState'
import { createReducer } from 'reduxsauce'
import { AppTypes } from './Actions'
export const firstTimer = (state, { language }) => ({
...state,
isFristTimer: false,
appLanguage: language,
})
export const reducer = createReducer(INITIAL_STATE, {
[AppTypes.FIRST_TIMER]: firstTimer,
[AppTypes.SET_DEVICE_LANGUAGE]: setDeviceLanguage,
})
import { createSelector } from 'reselect'
const isFristTimer = (state) => state.isFristTimer
const language = (state) => state.language
export const getFirstTimer = createSelector([isFristTimer, language])
import { put, select } from 'redux-saga/effects'
import * as Selectors from 'App/Stores/App/Selectors'
export function* firstTimer() {
const whereTo = yield select(Selectors.getFirstTimer)
const language = yield select(Selectors.language)
Reactotron.log('getFirstTimer value', whereTo)
Reactotron.log('language value', language)
// When those operations are finished we redirect to the main screen
}
import { takeLatest, all } from 'redux-saga/effects'
import { firstTimer } from './AppSaga'
import { AppTypes } from 'App/Stores/App/Actions'
export default function* root() {
yield all([
// Call `firstTimer()` when a `FIRST_TIMER` action is triggered
takeLatest(AppTypes.FIRST_TIMER, firstTimer),
])
componentDidMount() {
Reactotron.log('our state : ' + this.props.app)
}
_setLanguage(language) {
this.props.setFirstTimer(language)
}
render() {
const { isFristTimer } = this.props.app
if (isFristTimer) {
return (
<View style={Helpers.fill}>
<ImageBackground source={Images.firstTimerBg} style={Helpers.fullSize}>
<View
style={[
Style.buttonWrapper,
Helpers.mainCenter,
Helpers.mainSpaceBetween,
Helpers.row,
Metrics.mediumHorizontalMargin,
]}
>
<TouchableOpacity
onPress={() => this._setLanguage('en')}
style={[Style.buttonContainer, Helpers.center]}
>
<Text style={Fonts.normal}>{Words.english}</Text>
</TouchableOpacity>
<TouchableOpacity
onPress={() => this._setLanguage('ar')}
style={[Style.buttonContainer, Helpers.center]}
>
<Text style={Fonts.normal}>{Words.arabic}</Text>
</TouchableOpacity>
</View>
</ImageBackground>
</View>
)
}
return (
<View style={Helpers.fill}>
<AppNavigator
// Initialize the NavigationService (see https://reactnavigation.org/docs/en/navigating-without-navigation-prop.html)
ref={(navigatorRef) => {
NavigationService.setTopLevelNavigator(navigatorRef)
}}
/>
</View>
)
}
}
import { createSelector } from 'reselect'
const isFristTimer = (state) => state.isFristTimer
const language = (state) => state.language
export const getFirstTimer = createSelector(
[isFristTimer, language],
// here is where the result func is added to the selector definition
(isFristTimer, language) => ({
isFristTimer,
language,
})
)