View or open PDF files stored locally Expo React Native

Question

Is there a solution to view or open PDF Files using Expo (without Expo eject)? It's not necessary to open file inside App, it's can be a local filemanager.

What i tried:

• Linking does not open locally files, only online sources
• React Native PDF doesn't work with expo
• Expo Media Library allows to download files, but not open it.

Answer 1

My solution:

Use FileSystem.getContentUriAsync() and Expo IntentLauncher

import * as FileSystem from 'expo-file-system';
import * as IntentLauncher from 'expo-intent-launcher';

FileSystem.getContentUriAsync(uri).then(cUri => {
  IntentLauncher.startActivityAsync('android.intent.action.VIEW', {
      data: cUri.uri,
      flags: 1,
      type: 'application/pdf'
   });
});

Answer 2

I tried this solution https://stackoverflow.com/a/59813652/16799160 and I get this error:

[Unhandled promise rejection: Error: Encountered an exception while calling native method: Exception occurred while executing exported method startActivity on module ExpoIntentLauncher: No Activity found to handle Intent { act=android.intent.action.VIEW typ=application/pdf flg=0x1 }]

After that, I modified data: cUri.uri to data: cUri based on expo doc and works fine.
Remember, this is an android-only solution

import * as FileSystem from 'expo-file-system';
import * as IntentLauncher from 'expo-intent-launcher';

try {

  const cUri = await FileSystem.getContentUriAsync(uri);
             
  await IntentLauncher.startActivityAsync("android.intent.action.VIEW", {
      data: cUri,
      flags: 1,
      type: "application/pdf",
  });
}catch(e){
    console.log(e.message);
}