EXPO + Android 7.0 - undefined is not an object (evaluating 'RNFetchBlob.DocumentDir')

[apatton724]

Hi there,

I know this has been an issue in the past. However, I am using Expo to upload files using the react-native-fetch-blob.

Can someone walk me through how to avoid this issue in android 7.0? In the README it says I have to have the permission granted: https://github.com/wkh237/react-native-fetch-blob#installation

"Beginning in Android 6.0 (API level 23), users grant permissions to apps while the app is running, not when they install the app. So adding permissions in AndroidManifest.xml won't work for Android 6.0+ devices. To grant permissions in runtime, you might use PermissionAndroid API."

As I stated, I'm using Expo. Before I get to the point of asking the user for permission...on load of the app, I get the above mentioned error.

Any ideas on how to reconcile this?

[apatton724]

"dependencies": {
"@expo/ex-navigation": "~2.10.0",
"@expo/samples": "~1.0.3",
"expo": "16.0.0",
"react": "16.0.0-alpha.6",
"react-native": "https://github.com/expo/react-native/archive/sdk-16.0.0.tar.gz",
"react-native-datepicker": "^1.5.1",
"react-native-fetch-blob": "^0.10.5",
"redux": "^3.6.0"
},

[Jacse]

I think you have to use RNFetchBlob.dirs.DocumentDir

[Antoine-Mace]

UP, I encountered the same error today

dependencies :
"react": "16.0.0-alpha.6",
"react-native": "0.44.0",
"react-native-fetch-blob": "0.10.5"

@Jacse In my case I do use RNFetchBlob.fs.dirs.DocumentDir

If anyone as any fix, solution it will be awesome

thanks

[apatton724]

Thanks for the response @Jacse .

How and where would I use that at?

[Antoine-Mace]

@apatton724 I solved my issue by simply running npm install --save react-native-fetch-blob

Just in case before running the install you can watchman watch-del-all && npm cache clean to start from fresh
and using after npm start -- --reset-cache to lunch the packager, hope it will resolve your issue.

to answer your question, DocumentDir is just a path which is created dynamically by the RNfetchBlob.fs API depending on your Platform, you don't necessarily have to use it it's just a useful constant.

[apatton724]

Thank you @Antoine-Mace , I will give this a go!

[poptocrack]

@apatton724 Do you still have the issue? Because I still have it

[lf-alves]

I'm having the same issue (also using Expo)

[FiddlyDigital]

Same issue here but not using Expo

[flieks]

@lf-alves @poptocrack @apatton724 any luck with expo ? I need to open/view and upload a local pdf file so i need this.