Can't open pdf after download

[mMarcos208]

Configurations of my pdf

CONTENT-TYPE | application/octet-stream

My code

const downloadPdf = (uri: string, nome: string): void => {
    setLoading(true)
    const {config, fs} = RNFetchBlob
    const PictureDir = fs.dirs.DownloadDir
    const options = {
      fileCache: true,
      addAndroidDownloads: {
        useDownloadManager: true,
        notification: true,
        title: nome,
        path: `${PictureDir}/${nome}`,
      },
      appendExt: 'pdf',
    }
    config(options)
      .fetch('GET', uri, {
        // Accept: 'application/json',
        // 'Content-Type': 'multipart/form-data,octet-stream',
        'Content-Type': 'multipart/form-data',
      })
      .then((_) => {
        Snackbar.show({
          text: 'Download realizado com sucesso!',
          backgroundColor: colors.silverTree,
        })
      })
      .catch((_) => {
        Snackbar.show({
          text: 'Error ao realizar download!',
          backgroundColor: colors.valencia,
        })
      })
      .finally(() => setLoading(false))
  }

[leonardoballand]

Só falta seu código pra abrir aquele file, né?

[adaerodriguez]

@mMarcos208 You need to add code to open file. E.g.:

RNFetchBlob
    .config({ ...defaultOptions, ...options })
    .fetch('GET', url, {
      // Headers...
    })
    .progress((received, total) => {
      Console.log('progress', received / total);
    })
   .then((res) => {
      // The temp file path
      Console.log('File:', res);
      Console.log('The file saved to:', res.path());

      if (Platform.OS === 'android') {
        RNFetchBlob.android.actionViewIntent(res.path(), mimeType || 'application/pdf');
      }

      if (Platform.OS === 'ios') {
        RNFetchBlob.ios.previewDocument(res.path());
      }
    });

[louisiscoding]

Hi @adaerodriguez,

I'm doing exactly this in my app. It works well on iOS ! However, on Android, it goes to a black screen on

RNFetchBlob.android.actionViewIntent(res.path(), mimeType || 'application/pdf');

And come back to the app. If i touch my notification on my phone, it redirects me to the file, which has been successfully downloaded on my phone.

Would you know what causes this issue ?

RN: 0.63.2 RN-Fetch-Blob: 0.12.0

[adaerodriguez]

Hi @LouisJS, is possible you forgot some parameter in the config? or do you forgot to ask for permissions? This is my config:

const options = Platform.select({
    android: {
      // appendText: fileType || defaultFileType, // if you need file extension
      path: `${DownloadDir}/${name}`,
      /** With Download manger */
      // addAndroidDownloads: {
      //   path: `${DownloadDir}/${name}`,
      //   useDownloadManager: true,
      //   mediaScannable: true,
      //   notification: true,
      //   overwrite: true,
      //   // Optional, but recommended since android DownloadManager will fail when
      //   // the url does not contains a file extension, by default the mime type will be text/plain
      //   // mime: 'text/plain',
      //   description: strings('files.downloadByManager'),
      // },
    },
    ios: {
      // appendText: fileType || defaultFileType, // if you need file extension
      path: `${DocumentDir}/${name}`,
      // IOSBackgroundTask: true,
      // IOSUploadTask: true,
    },
  });

if (Platform.OS === 'android') {
    getPermissionWriteExternalStorage(
      (status, tag) => { Console.log('getPermissionWriteExternalStorage - status:', status, ' | tag: ', tag); },
      () => { downloadFile(url, options, fileType, callbackSuccess); },
    );
  }

  if (Platform.OS === 'ios') {
    downloadFile(url, options, fileType, callbackSuccess);
  }

My permission method is:

export const getPermissionWriteExternalStorage = async (callbackError, callbackSuccess) => {
  const permission = PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE;
  const permissionTag = Permission.PERMISSION_WRITE_EXTERNAL_STORAGE;

  try {
    const status = await PermissionsAndroid.request(permission);
    permissionResult(status, permissionTag, callbackError, callbackSuccess);
  } catch (err) {
    Console.warn(err);
  }
};

And my defaultConfig that I have in RNFetchBlob:

const defaultOptions = {
    fileCache: true,
    timeout: 1000 * 15, // 15 seconds
  };

I hope that my code could help you :)

[louisiscoding]

I do ask for permission

const grantPermission = async () => {
    if (Platform.OS === 'android') {
      return requestMultiple([
        PERMISSIONS.ANDROID.WRITE_EXTERNAL_STORAGE,
        PERMISSIONS.ANDROID.READ_EXTERNAL_STORAGE,
      ]);
    } else {
      return request(PERMISSIONS.IOS.WRITE_EXTERNAL_STORAGE);
    }
  };

And the file is downloaded on my phone. I can open it then via the notification :/

[adaerodriguez]

Maybe your path is wrong? The path for iOS and Android is differente. Look at my config

const { dirs: { DownloadDir, DocumentDir } } = RNFetchBlob.fs;

[louisiscoding]

The file is well downloaded. The thing i can't do is open it with RNFetchBlob.android.actionViewIntent

[adaerodriguez]

Only to discard mistakes. Could you see if you have the correct permissions selected into Settings > Apps > "Your app" > Permissions. Are you using the "Download Manager" ?

[louisiscoding]

Here is a demo of what happens.

It tries to open the file. But come back to the app immediately after that.

[adaerodriguez]

I see.... You are using Download Manager as well. Before I used Download Manager as you can see in my config and it works perfectly. In my opinion, there is some option that you haven't put in your config. Test this options in your code:

const options = Platform.select({
  android: {
  /** With Download manger */
    addAndroidDownloads: {
       path: `${DownloadDir}/${name}`,
       useDownloadManager: true,
       mediaScannable: true,
       notification: true,
       overwrite: true,
       // Optional, but recommended since android DownloadManager will fail when
       // the url does not contains a file extension, by default the mime type will be text/plain
       // mime: 'text/plain',
      //   description: strings('files.downloadByManager'),
     },
});

[louisiscoding]

I've tried with this image so we can try with the same file ;)

My Code is this exactly this one

const downloadFile = async () => {
  const {
    dirs: { DownloadDir, DocumentDir },
  } = RNFetchBlob.fs;

  const name = 'airplane.png';

  const options = Platform.select({
    android: {
      /** With Download manger */
      addAndroidDownloads: {
        path: `${DownloadDir}/${name}`,
        title: name,
        useDownloadManager: true,
        mediaScannable: true,
        notification: true,
        overwrite: true,
      },
    },
    ios: {
      path: `${DocumentDir}/${name}`,
    },
  });

  return RNFetchBlob.config({ ...options })
    .fetch('GET', 'https://homepages.cae.wisc.edu/~ece533/images/airplane.png')
    .then((res) => {
      // The temp file path
      console.log('File:', res);
      console.log('The file saved to:', res.path());

      if (Platform.OS === 'android') {
        RNFetchBlob.android.actionViewIntent(res.path(), 'image/png');
      }

      if (Platform.OS === 'ios') {
        RNFetchBlob.ios.previewDocument(res.path());
      }
    });
};

So this time it does not go back directly to the app, but it infinitely loads the content. Right after that, i can tap my notification and see my file instantaneously

You can preview the result here

[olup]

Same here, it opens the pdf app for a split second but comes back directly to my app. Pressing the notification or accessing through the file app works fine tho...

[kaayru]

Same issue here, any update?

Here's my code :

return RNFetchBlob.config({
    path,
    addAndroidDownloads: {
      useDownloadManager: true,
      path,
      notification: true,
      title: notificationTitle,
      mime: 'application/pdf',
      mediaScannable: true,
    },
  })
    .fetch('GET', apiUrl)
    .then((res) => {
      if (Platform.OS === 'android') {
        RNFetchBlob.android.actionViewIntent(res.path(), 'application/pdf');
      } else {
        RNFetchBlob.ios.openDocument(res.path());
      }

      return res;
    });

Before this I ask READ and WRITE permission on Android :

PERMISSIONS.ANDROID.WRITE_EXTERNAL_STORAGE
PERMISSIONS.ANDROID.READ_EXTERNAL_STORAGE

And I have the following in AndroidManifest :

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

 <intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
    <action android:name="android.intent.action.DOWNLOAD_COMPLETE"/>
</intent-filter>

Thanks,

[gorbatenkov]

Was able to fix it by adding android:requestLegacyExternalStorage="true" to my manifest file. Based on this https://medium.com/@sriramaripirala/android-10-open-failed-eacces-permission-denied-da8b630a89df

[maxowy]

Was able to fix it by adding android:requestLegacyExternalStorage="true" to my manifest file. Based on this https://medium.com/@sriramaripirala/android-10-open-failed-eacces-permission-denied-da8b630a89df

Confirmed, works like a charm 👍

[tanapon395]

I'm fix it by

1. Add below permissions in AndroidManifest.xml
2. To use downloadmanager, add below action in intent in AndroidManifest.xml
3. import PermissionsAndroid, Alert from react native (android only)

Credit : https://stackoverflow.com/questions/56887851/react-native-download-pdf-file-with-rn-fetch-blob-on-click-a-button?answertab=votes#tab-top

[kv77724-dot]

In my case using mime type in config object made it work. RNFetchBlob.config({ path, addAndroidDownloads: { useDownloadManager: true, path, notification: true, title: notificationTitle, mime: 'application/pdf', mediaScannable: true, },

[cirilojesus]

A mi me srivio este codigo tanto en Ios y Android

const { config, fs } = RNFetchBlob;
config({
    fileCache: true,
    addAndroidDownloads: {
        useDownloadManager: true,
        notification: true,
        path: fs.dirs.PictureDir + '/IU-APP/' + file.name.split('/').pop(),
    },
    path: fs.dirs.DocumentDir + '/' + file.name.split('/').pop()
}).fetch('GET', encodeURI(file.url)).then(async(res) => {
    if (Platform.OS === "ios") RNFetchBlob.ios.previewDocument(res.path());
}).catch(error => {
    showAlert('Error al descargar el documento!', 'danger')
})

[Kaung-Htet-Hein]

const { dirs } = ReactNativeBlobUtil.fs
		const directory = isIos ? dirs.DocumentDir : dirs.DownloadDir

		setIsLoading(true)

		ReactNativeBlobUtil.config({
			addAndroidDownloads: {
				storeInDownloads: true,
				useDownloadManager: true,
				notification: true,
				path: directory + '/' + fileName,
				mime: 'application/pdf',
				description: 'Download contract',
				mediaScannable: true,
				title: fileName,
			},
			path: directory + '/' + fileName,
			fileCache: true,
		})	

in my case, i followed the android permissions rules but i didn't work, then i added title, and it starts working as expected