Question

从版本0.44-> 0.56升级后，在第一个渲染循环中一直保持此状态。有任何想法吗？（似乎是内部反应性错误）。 Google搜索没有给我任何东西：-（

TypeError: undefined is not an object (evaluating 'props.getItem')

This error is located at:
    in FlatList (at YellowBoxList.js:87)
    in RCTView (at View.js:43)
    in YellowBoxList (at YellowBox.js:104)
    in YellowBox (at AppContainer.js:93)
    in RCTView (at View.js:43)
    in AppContainer (at renderApplication.js:31)

_checkProps
    FlatList.js:489:6

package.json-所有软件包都是最新的（带有yarn upgrade --latest）。我正在使用一些 custom 软件包来处理其他rn 0.56.0问题。例如react-native-root-siblings不兼容babel7。

 "dependencies": {
    "assert": "1.4.1",
    "lodash": "4.17.10",
    "moment": "2.22.2",
    "moment-range": "4.0.1",
    "path": "^0.12.7",
    "prop-types": "^15.6.2",
    "react": "^16.4.1",
    "react-native": "^0.56.0",
    "react-native-action-button": "2.8.4",
    "react-native-actionsheet": "2.4.2",
    "react-native-animatable": "1.3.0",
    "react-native-autocomplete-input": "3.5.0",
    "react-native-background-timer": "2.0.1",
    "react-native-branch": "2.3.2",
    "react-native-code-push": "5.4.0",
    "react-native-collapsible": "0.13.0",
    "react-native-config": "0.11.5",
    "react-native-contacts-wrapper": "0.2.4",
    "react-native-country-picker-modal": "0.6.2",
    "react-native-datepicker": "1.7.2",
    "react-native-device-info": "0.22.0",
    "react-native-dotenv": "0.2.0",
    "react-native-fast-image": "^4.0.14",
    "react-native-fbsdk": "0.7.0",
    "react-native-fcm": "^16.0.0",
    "react-native-firebase": "^4.3.5",
    "react-native-fs": "2.10.14",
    "react-native-fullwidth-image": "^0.1.2",
    "react-native-htmlview": "0.12.1",
    "react-native-i18n": "2.0.15",
    "react-native-image-crop-picker": "0.20.3",
    "react-native-image-gallery": "2.1.5",
    "react-native-intercom": "11.1.0",
    "react-native-keyboard-aware-scroll-view": "0.6.0",
    "react-native-linear-gradient": "2.4.0",
    "react-native-loading-spinner-overlay": "0.5.2",
    "react-native-mail": "3.0.6",
    "react-native-modal-datetime-picker": "6.0.0",
    "react-native-offline": "3.11.0",
    "react-native-permissions": "1.1.1",
    "react-native-phone-input": "0.2.1",
    "react-native-picker": "4.3.7",
    "react-native-popup-dialog": "0.14.52",
    "react-native-restart": "git+https://github.com/nmchr7/react-native-restart.git#master",
    "react-native-root-toast": "https://github.com/swapkids/react-native-root-toast.git#master",
    "react-native-segment-analytics": "0.1.14",
    "react-native-side-menu": "1.1.3",
    "react-native-simple-store": "1.3.0",
    "react-native-spinkit": "1.1.1",
    "react-native-splash-screen": "3.1.0",
    "react-native-swipeable": "0.6.0",
    "react-native-tooltips": "0.0.6",
    "react-native-vector-icons": "4.6.0",
    "react-navigation": "2.9.0",
    "react-redux": "5.0.7",
    "redux": "4.0.0",
    "redux-persist": "5.10.0",
    "redux-saga": "0.16.0",
    "remote-redux-devtools": "0.5.12",
    "replace-ext": "^1.0.0",
    "rn-viewpager": "1.2.9",
    "rrule": "2.2.9",
    "socket.io-client": "2.1.1",
    "uuid": "^3.2.1",
    "validator": "10.4.0"
  }

Answer 1

我看到了同样的错误，对我来说，解决方案是消除我拥有的所有旧babel- * devDependencies，删除node_modules，然后运行yarn对其进行重建。我剩下的唯一与babel相关的软件包（现在可以正常使用）是 "@babel/plugin-proposal-decorators": "7.0.0-beta.47", "babel-jest": "23.4.2", "babel-preset-react-native": "^5" 最后两个是react-native init会放在一个新项目中的项目，第一个是我添加的，因为我使用了装饰器。

Answer 2

我通过运行

解决了该问题

react-native start --reset-cache

然后

react-native run-android

Answer 3

它是0.56错误。去0.54，你不会有任何问题使用此命令：

react-native init --version="0.54.0" ProjectName

我遇到了同样的问题，对我来说就像一个魅力。 check this out

React Native 0.56在启动时崩溃

3 个答案: