Question

我正在尝试根据@Filipe Borges here（redux + react-redux + redux-persist）的建议，为我已经在我的React Native应用程序中工作的Redux状态管理添加持久性。我想要的只是用户创建的列表项（我存储在Redux中）应该在重新启动应用程序后可用。

我根据redux-persist github README添加了所需的代码，但当我尝试启动我的应用时，它会立即崩溃（几秒钟之后只有一个空白的白色屏幕），或者给我一个神秘的错误消息/ stacktrace 告诉我“不能将没有瑜伽节点的孩子添加到没有测量功能的父节点”，堆栈跟踪只包含库/核心React Native代码（meaing我真的不知道在哪里看）。

为了澄清，在添加redux-persist之前，redux和react-redux工作得很好。

以下是我store.js的样子：

import { createStore, applyMiddleware } from "redux";
import { persistStore, persistReducer } from "redux-persist";
import storage from "redux-persist/lib/storage";
import logger from "redux-logger";

import reducers from "./reducers";

// configure middleware
let middleware = [];
if (process.env.NODE_ENV === "development") {
    middleware.push(logger);
}

// configure persistance
const persistConfig = {
    key: "root",
    storage: storage,
};
const persistedReducers = persistReducer(persistConfig, reducers);

export default function configureStore() {

    // finalize store setup
    let store = createStore(persistedReducers, applyMiddleware(...middleware));
    let persistor = persistStore(store);
    return { store, persistor };
}

和我的App.js：

import React, { Component } from 'react';
import Expo from "expo";

import Navigator from "./app/config/routes";

// store and state management
import { Provider } from "react-redux";
import configureStore from "./app/redux/store";
let { store, persistor } = configureStore();
import { PersistGate } from "redux-persist/lib/integration/react";

export default class App extends Component {
constructor() {
    super();
    Expo.ScreenOrientation.allow(Expo.ScreenOrientation.Orientation.PORTRAIT_UP);
}

render() {
        return (
            <Provider store={store}>
                <PersistGate loading="loading..." persistor={persistor}>
                    <Navigator />
                </PersistGate>
            </Provider>
        );
    }
}

关于我的环境的说明;我的应用程序是一个独立的Expo应用程序：

"dependencies": {
    "expo": "^24.0.0",
    "react": "16.0.0",
    "react-native": "https://github.com/expo/react-native/archive/sdk-24.0.0.tar.gz",
    "react-navigation": "^1.0.0-beta.21",
    "react-redux": "^5.0.6",
    "redux": "^3.7.2",
    "redux-logger": "^3.0.6",
    "redux-persist": "^5.4.0",
    ...etc, some more unrelated packages
  }

在MacOS High Sierra开发的Android 7上运行。

提前感谢您的帮助！

Answer 1

这是因为＆＃34; loading ...＆＃34; 组件没有包装＆lt;查看＆gt; 和＆lt;文字＆gt; ，尝试添加换行或创建加载组件，问题就解决了。

Redux-persist立即崩溃

1 个答案: