Linking.getInitialUrl never returns

[Dellybro]

System:
OS: macOS Mojave 10.14.6
CPU: (8) x64 Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
Memory: 30.13 MB / 16.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 8.15.1 - /usr/local/bin/node
npm: 6.9.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 13.0, DriverKit 19.0, macOS 10.15, tvOS 13.0, watchOS 6.0
IDEs:
Android Studio: 3.4 AI-183.5429.30.34.5452501
Xcode: 11.0/11A420a - /usr/bin/xcodebuild
npmPackages:
react: 16.9.0 => 16.9.0
react-native: 0.61.2 => 0.61.2
npmGlobalPackages:
react-native-cli: 2.0.1

React Native version:

0.61.2

Steps To Reproduce

1. On simulator / emulator / live iOS or Android phone run the command await Linking.getInitialUrl().

this command never returns and just hands

Describe what you expected to happen:

I expected an event to be returned. This worked in previous versions. This is the 4th app i've updated to v61.2 and had this issue on.

Snack, code example, screenshot, or link to a repository:

async function someFn() {
     let event = await Linking.getInitialURL()
     // Next line of code never runs
     ....
}

Edit: I've confirmed that this only happens when using async await. Using .then.catch the event seems to return as normal.

[JulianKingman]

Try putting a catch on there to see if you're getting an error.

async function someFn() {
     let event = await Linking.getInitialURL().catch(err => console.log(err))
     // Next line of code never runs
     ....
}

[musemind]

We have the same problem on Android after updating to Expo SDK 36 (React Native 0.61). The Promise from Linking.getInitialURL() is not resolving. This happens at least in development. After a fast refresh, the promise resolves.

We prevent the app with a timeout from being stuck in the initialization process:

const getInitialUrl = (): Promise<string | null> => {
  return new Promise((resolve, reject) => {
    const timeout: number = setTimeout(() => {
      resolve(null)
    }, 2000)
    Linking.getInitialURL()
      .then(url => resolve(url))
      .catch(err => reject(err))
      .finally(() => clearTimeout(timeout))
  })
}

[krishnakumarrk]

@musemind I am getting '_reactNative.Linking.getInitialURL(...).then(...).catch(...).finally is not a function'. Any idea?

[joaocac]

Hi,

my team has discovered that debug mode is breaking something since we have the correct and expected behavior in a real iOS device.

Unfortunately, this is not true for android. In a real device, without debug, we are experiencing a return of null value when calling getInitialUrl for cold-start (app is not running).

I hope this can help, and if someone figures how to make it work for android, please post.

System:
OS: macOS 10.15.2
CPU: (8) x64 Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
Memory: 68.70 MB / 16.00 GB
Shell: 5.7.1 - /bin/zsh
Binaries:
Node: 11.9.0 - /usr/local/bin/node
npm: 6.5.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
IDEs:
Xcode: 11.3/11C29 - /usr/bin/xcodebuild
npmPackages:
react: 16.9.0 => 16.9.0
react-native: 0.61.2 => 0.61.2
npmGlobalPackages:
react-native-cli: 2.0.1

[bsonmez]

We have the same issue. It does not even catch the error or returns anything on Android devices only. Somehow it perfectly works on iOS

[satya164]

Duplicate of #25675

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as a "Discussion" or add it to the "Backlog" and I will leave it open. Thank you for your contributions.

[aymkin]

Hi,

my team has discovered that debug mode is breaking something since we have the correct and expected behavior in a real iOS device.

Unfortunately, this is not true for android. In a real device, without debug, we are experiencing a return of null value when calling getInitialUrl for cold-start (app is not running).

I hope this can help, and if someone figures how to make it work for android, please post.

System:
OS: macOS 10.15.2
CPU: (8) x64 Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
Memory: 68.70 MB / 16.00 GB
Shell: 5.7.1 - /bin/zsh
Binaries:
Node: 11.9.0 - /usr/local/bin/node
npm: 6.5.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
IDEs:
Xcode: 11.3/11C29 - /usr/bin/xcodebuild
npmPackages:
react: 16.9.0 => 16.9.0
react-native: 0.61.2 => 0.61.2
npmGlobalPackages:
react-native-cli: 2.0.1

Thx a lot for the idea! the app behaves differently if you call Linking. getInitialUrl in debugging mode

[nastaransamui]

still happen in "react-native": "0.63.0", and it's always "null"

[satya164]

Closing as duplicate of #25675