CODEWITHSUNDEEP
androidreact-nativeandroid-10.0rn-fetch-blob
Baterka
Baterka

Reputation: 3694

React Native download file using RNFetchBlob's Download Manager on Android 10

I need to download file to user's Download directory in React Native app using rn-fetch-blob, but seems like it is not compatible with Android 10, because I am getting error:

enter image description here

First I ask for permissions:

try {
            const granted = await PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE);
            if (granted === PermissionsAndroid.RESULTS.GRANTED) {
                await actualDownloadPDF();
            } else {
                ToastAndroid.show('Nepovolili jste ukládání souborů do zařízení.', ToastAndroid.LONG);
            }
        } catch (err) {
            console.warn(err);
        }

then I try to download file:

const res = await RNFetchBlob.config({
                addAndroidDownloads: {
                    useDownloadManager: true,
                    notification: true,
                    mime: 'application/pdf',
                    title: filename,
                    path: dirs.DownloadDir,
                },
            }).fetch('GET', url, {
                Authorization: 'Bearer ' + Api.Bearer,
            });

It seems like Android 10 requires from developer to open Intent where user select write permission to folder ( https://developer.android.com/training/data-storage/shared/documents-files#grant-access-directory), but I am not sure how to do it, because it seems like RNFetchBlob does not have this feature, yet.

Any ideas how to make this work? It was working fine on Android 9.

Upvotes: 4

Views: 15069

Answers (4)

Sanaullah Javeid
Sanaullah Javeid

Reputation: 317

You should give complete path to the 'path' field. Change

path: dirs.DownloadDir

to

path: dirs.DownloadDir`/download.pdf`

Upvotes: 1

Samson Akinfenwa
Samson Akinfenwa

Reputation: 59

Add android:requestLegacyExternalStorage="true" to in your AndroidManifest.xml

<application
  ...
  android:requestLegacyExternalStorage="true"
>

Upvotes: 2

David Ćeranić
David Ćeranić

Reputation: 154

I think that your if clause is wrong. My working example look like this:

import { PermissionsAndroid } from "react-native";

export const CheckFilePermissions = async (platform) => {
  if(platform === 'android') {
    try {
      const granted = await PermissionsAndroid.requestMultiple([
        PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE,
        PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE,
      ]);
      if (granted['android.permission.READ_EXTERNAL_STORAGE'] && granted['android.permission.WRITE_EXTERNAL_STORAGE']) {
        // user granted permissions
        return true;
      } else {
        // user didn't grant permission... handle with toastr, popup, something...
        return false;
      }
    } catch (err) {
      // unexpected error
      return false;
    }
  } else {
    // platform is iOS
    return true;
  }
};

You can use it like:

if(await CheckFilePermissions(Platform.OS)) {
....
your code 
....

Upvotes: 1

Luis Abarca
Luis Abarca

Reputation: 154

const fileName = 'document.pdf'; 
const destPath = RNFetchBlob.fs.dirs.DownloadDir + '/' + fileName;

const config = {
  fileCache : true, 
  path: destPath, 
  addAndroidDownloads: { 
    title: destPath, 
    description: `Download ${destPath}`,
    useDownloadManager: false, 
    notification: false,
  }
}; 

const res = await RNFetchBlob.config(config)...

I'm using this code and it works on Android 10.

Upvotes: 3

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