Can't open NFC url with Linking

[LeoIannacone]

🐛 Bug Report

I'm trying to use a NFC tag to open a give URL with my application, but Linking.getInitialUrl returns always a null url. However the system recognises the intent registered (so I get asked if I want to open the URL with my app)

To Reproduce

1. Create a new app
2. Add the following to your AndroidManifest.json:

    <uses-permission android:name="android.permission.NFC" />
...
        <intent-filter>
          <action android:name="android.intent.action.VIEW" />
          <category android:name="android.intent.category.DEFAULT" />
          <category android:name="android.intent.category.BROWSABLE" />
          <data android:scheme="https" android:host="www.example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="https" android:host="example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="http" android:host="www.example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="http" android:host="example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="app" android:host="example" android:pathPrefix="/some-path/" />
          <data android:scheme="app" android:host="com.example" android:pathPrefix="/some-path/" />
        </intent-filter>
        <intent-filter>
          <action android:name="android.nfc.action.NDEF_DISCOVERED" />
          <category android:name="android.intent.category.DEFAULT" />
          <category android:name="android.intent.category.BROWSABLE" />
          <data android:scheme="https" android:host="www.example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="https" android:host="example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="http" android:host="www.example.com" android:pathPrefix="/some-path/" />
          <data android:scheme="http" android:host="example.com" android:pathPrefix="/some-path/" />
        </intent-filter>

3. create NFC tag with http://example.com/some-path/this-is-an-url
4. Add this to your App.js

  public componentDidMount (): void {
      Linking.getInitialURL().then(url => {
        console.warn('getInitialURL', url)
      })
  }

5. Read the NFC tag with the mobile NFC reader

6. You get asked if you want to open the URL with the app

7. Click your app

The console.warn prints null

Expected Behavior

Linking.getInitialUrl should return the url found in the NFC tag

The Linking.addEventListener('url', ({url}) => console.warn('event url': url)) should also work

Environment

  React Native Environment Info:
    System:
      OS: Linux 4.18 Ubuntu 18.10 (Cosmic Cuttlefish)
      CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
      Memory: 145.54 MB / 15.54 GB
      Shell: 5.5.1 - /usr/bin/zsh
    Binaries:
      Node: 10.14.1 - ~/.nvm/versions/node/v10.14.1/bin/node
      Yarn: 1.12.3 - ~/.nvm/versions/node/v10.14.1/bin/yarn
      npm: 6.5.0 - ~/.nvm/versions/node/v10.14.1/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      Android SDK:
        API Levels: 23, 25, 27, 28
        Build Tools: 23.0.1, 23.0.2, 26.0.1, 26.0.2, 27.0.3, 28.0.3
        System Images: android-27 | Google APIs Intel x86 Atom, android-28 | Google APIs Intel x86 Atom_64, android-28 | Google Play Intel x86 Atom
    npmPackages:
      react: ^16.8.6 => 16.8.6 
      react-native: ^0.59.4 => 0.59.4 
    npmGlobalPackages:
      react-native-cli: 2.0.1

[kelset]

Out of curiosity, if you do a "standard" deep-link does the url show up?

[LeoIannacone]

What's a "standard" deep-link ?

[kelset]

Sorry, poor wording ;)

I mean, if you trigger the same behaviour not via an NFC tag but via something like adb shell am start -W -a android.intent.action.VIEW -d "URL" APP_NAME, does it work regularly?

[LeoIannacone]

It works correctly, the app receives the full url

[kelset]

Interesting 🤔

[troZee]

Very similar #24429 . Maybe it helps you.