actionViewIntent fails on android 9+

• react@16.8.6
• react-native@0.59.8
• rn-fetch-blob@0.10.15

I am calling my api to get a pdf file:

const { dirs } = RNFetchBlob.fs;
const saveDirectory = Platform.select({ ios: dirs.DocumentDir, android: dirs.DownloadDir });

RNFetchBlob
  .config({ path: `${saveDirectory}/${docName || "temp"}.pdf`})
  .fetch(method, url, headers, body)
  .then(resolve);

It successfully resolves. Then, I try to open it:

RNFB.android.actionViewIntent(pdf, "application/pdf");

After a little bit of waiting I get a YellowBox warning, with a code “EUNSPECIFIED”.

It’s happening on Honor 8x with android 9. Works on OnePlus One with android 6.0.1

[pavermakov]

Solved it by manipulating with the native java code.

RNFetchBlob.java:

before:

// Set flag to give temporary permission to external app to use FileProvider
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)

after:

// Set flag to give temporary permission to external app to use FileProvider
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

This is actually worth a separate PR.

[R4DIC4L]

Maybe for android 9+ an approach using ACTION_OPEN_DOCUMENT is needed instead of ACTION_VIEW as here: https://stackoverflow.com/questions/61356281/android-files-unable-to-get-file-path-from-content-uri-when-file-is-selected-f.