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android - Firebase Firestore : Could not reach Firestore backend (Android only)

转载 作者:太空狗 更新时间:2023-10-29 14:39:37 26 4
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我正在使用 Create React Native App 构建一个 react-native 应用程序。对于后端,它使用 Firebase Firestore。该应用程序在 iOS 上运行良好,但在尝试从后端获取数据时在 Android(包括模拟器和设备)上失败并出现以下错误:

22:02:37: [2018-05-22T05:02:33.751Z]  @firebase/firestore:, Firestore (4.10.1): Could not reach Firestore backend.
- node_modules\react-native\Libraries\ReactNative\YellowBox.js:71:16 in error
- node_modules\@firebase\logger\dist\cjs\src\logger.js:97:25 in defaultLogHandler
- ... 18 more stack frames from framework internals

知道可能是什么问题以及如何调试吗?

该错误似乎是一般性的,因为还有其他问题具有相同的错误消息。但在这种情况下,它仅特定于 Android。

完整日志和堆栈跟踪:

21:50:51: Warning: Expo version in package.json does not match sdkVersion in manifest.
21:50:51:
21:50:51: If there is an issue running your project, please run `npm install` in C:\Users\grigor\Documents\Bitbucket\AwesomeProject and restart.
21:51:08: Finished building JavaScript bundle in 26098ms
21:51:14: Running app on XT1053 in development mode

21:51:34: [2018-05-25T04:51:26.597Z] @firebase/firestore:, Firestore (4.10.1): Could not reach Firestore backend.
- node_modules\react-native\Libraries\ReactNative\YellowBox.js:71:16 in error
- node_modules\@firebase\logger\dist\cjs\src\logger.js:97:25 in defaultLogHandler
- ... 18 more stack frames from framework internals
21:51:37: Setting a timer for a long period of time, i.e. multiple minutes, is a performance and correctness issue on Android as it keeps the timer module awake, and timers can only be called when the app is in the foreground. See https://github.com/facebook/react-native/issues/12981 for more info.
(Saw setTimeout with duration 3299464ms)
- node_modules\react-native\Libraries\ReactNative\YellowBox.js:82:15 in warn
- node_modules\react-native\Libraries\Core\Timers\JSTimers.js:254:8 in setTimeout
- node_modules\@firebase\auth\dist\auth.js:37:577 in Hc
* null:null in <unknown>
- node_modules\@firebase\auth\dist\auth.js:15:932 in y
- node_modules\@firebase\auth\dist\auth.js:37:606 in Ic
- node_modules\@firebase\auth\dist\auth.js:210:0 in kk
- node_modules\@firebase\auth\dist\auth.js:209:665 in start
- node_modules\@firebase\auth\dist\auth.js:215:38 in Dk
- node_modules\@firebase\auth\dist\auth.js:253:425 in ql
- node_modules\@firebase\auth\dist\auth.js:255:146 in <unknown>
- node_modules\@firebase\auth\dist\auth.js:19:220 in <unknown>
* null:null in Gb
* null:null in Cb
- node_modules\@firebase\auth\dist\auth.js:22:103 in Sb
- node_modules\@firebase\auth\dist\auth.js:15:643 in jb
- ... 10 more stack frames from framework internals

最佳答案

我没有针对该问题的确切解决方案,但我意识到我与 firebase 交互的方式使我的应用程序更容易受到影响。也许您可以在您的项目中发现我自己的一些设计缺陷?

我发现我在 try/catch 之外调用了 initializeApp,这意味着只要遇到错误,整个 JavaScript 模块就会失败。因此,第一个解决方法是安全地正确处理初始化。

其次,这个错误在我构建对 firestore() 的调用的方式中变得很突出。例如,我对 firebase.firestore() 的第一次调用嵌入在一个返回 Promise 的方法中,即:

() => firebase.firestore().collection('someCollection').get().then(...).catch(e => ...);

现在,使用这种方法,如果在返回 Promise 之前与 firestore 的交互失败,我们实际上不会捕获错误!这是因为它在创建 Promise 的链中出现得太早了。这再次意味着,应用程序似乎会在比应用程序内部可能捕获的问题明显更深的层次上失败。但那是错误的!

正确的实现是首先将与 firebase.firestore() 的交互包装在 Promise 中:

return new Promise(resolve => firebase.firestore().collection(...)).then(q => ...).catch(e =>...);

希望这在某种程度上有所帮助。我知道这是一个棘手的问题!

关于android - Firebase Firestore : Could not reach Firestore backend (Android only),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50501749/

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