每次应用启动时,我都会尝试将用户定向到主要组件 .
我使用react-native-router-flux作为我的导航包装器,Firebase作为后端,Redux作为状态管理库 .
这是问题所在 . 我在我的路由器组件中执行 firebase.auth().onAuthStateChanged()
以确定用户是否已登录 .
如果没有用户,则返回Login组件 .
如果有用户登录,则返回Main Component作为堆栈中的基本组件 .
这个SO POST有确切的问题,建议的答案建议使用来自react-native-router-flux的Switch Feature . 我试了一下,没用 .
这是我的代码 .
App.js
import React, { Component } from 'react';
import firebase from 'firebase';
import { Provider } from 'react-redux';
import { createStore, applyMiddleware } from 'redux';
import ReduxThunk from 'redux-thunk'
import reducers from './reducers';
import Router from './Router';
class App extends Component {
componentWillMount() {
firebase.initializeApp({
//my firebase config
});
}
render() {
const store = createStore(reducers, {}, applyMiddleware(ReduxThunk));
return (
<Provider store={store}>
<Router />
</Provider>
);
}
}
export default App;
Router.js
import React, { Component } from 'react';
import { connect } from 'react-redux';
import { isLoggedIn } from './actions';
import { Scene, Router, Actions, Switch } from 'react-native-router-flux';
import firebase from 'firebase';
import Login from './components/auth/Login';
import Register from './components/auth/Register';
import Main from './components/Main';
class RouterComponent extends Component {
state = { loggedIn: false }
componentWillMount() {
this.props.isLoggedIn();
}
render() {
return(
<Router sceneStyle={{ }} hideNavBar={true}>
<Scene key="root">
<Scene key="authContainer" initial>
<Scene key="login" component={Login} title="Login Page" />
<Scene key="register" component={Register} title="Register Page" />
</Scene>
<Scene key="mainContainer">
<Scene key="main" component={Main} title="Main Page" />
</Scene>
</Scene>
</Router>
)
}
}
export default connect(null, { isLoggedIn })(RouterComponent);
Some of my redux action creators
export const isLoggedIn = (dispatch) => {
return(dispatch) => {
firebase.auth().onAuthStateChanged((user) => loginUserSuccess(dispatch, user));
};
};
const loginUserSuccess = (dispatch, user) => {
dispatch({
type: LOGIN_USER_SUCCESS,
payload: user
});
Actions.mainContainer({ type: 'reset'});
};
我了解使用下面的异步片段可以实现确切的动机:
firebase.auth().onAuthStateChanged(function(user) {
if (user) {
// return <Main />
} else {
// Stay at login screen
}
});
但我正试图用react-native-router-flux重新创建它 .
这是我的应用程序的gif-shot,以帮助你们了解更多 . 用户已登录 . 一段时间后将调度主屏幕 . 任何想法?
1 回答
我没有't know if there are any specific constraints in your app but I'm使用 Splash 屏幕(也禁用Xcode生成的默认屏幕)并在此屏幕上执行身份验证检查 .
如果用户已登录,请将堆栈重置为 Main 组件,否则将堆栈重置为 Login 组件 .