"Text must not be null or empty" error occurs on Android Studio.

[ryohlan]

Environment

System:
OS: macOS 10.14.5
CPU: (4) x64 Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz
Memory: 168.03 MB / 16.00 GB
Shell: 5.3 - /bin/zsh
Binaries:
Node: 10.13.0 - ~/.nvm/versions/node/v10.13.0/bin/node
Yarn: 1.2.1 - /usr/local/bin/yarn
npm: 6.8.0 - ~/.nvm/versions/node/v10.13.0/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
Android SDK:
API Levels: 21, 22, 23, 24, 25, 26, 27, 28
Build Tools: 22.0.1, 23.0.1, 23.0.2, 25.0.0, 25.0.2, 25.0.3, 26.0.1, 26.0.3, 27.0.3, 28.0.2, 28.0.3
System Images: android-24 | Google APIs Intel x86 Atom, android-27 | Google APIs Intel x86 Atom, android-28 | Google Play Intel x86 Atom
IDEs:
Android Studio: 3.4 AI-183.6156.11.34.5522156
Xcode: 10.2.1/10E1001 - /usr/bin/xcodebuild
npmPackages:
react: 16.8.6 => 16.8.6
react-native: 0.60.0 => 0.60.0
npmGlobalPackages:
create-react-native-module: 0.5.0
react-native-create-library: 3.1.2
react-native-git-upgrade: 0.2.7

Description

"Text must not be null or empty" error occurs on Android Studio.

See this issue facebook/react-native#25479

It works for me by updating this code to

def command = "../node_modules/.bin/react-native config"

But react-native run-android does not work fine.

Reproducible Demo

1. react-native init App
2. open Android Studio
3. Gradle Sync failed. (Text must not be null or empty)

[thymikee]

You'll need to set custom root (likely same for iOS). Here are the docs on it :) https://github.com/react-native-community/cli/blob/master/docs/autolinking.md#custom-root-monorepos-1

[thymikee]

Oh I just thought that outputting a helpful message with autolinking docs link if the config command output is empty would be really helpful. Would you like to contribute that?

[mikemcelligott]

The above did not fix the problem for me, but a similar update is getting me much closer (but still not working app.... and this is a brand new app):

{root}/node_modules/@react-native-community/cli-platform-android/native_modules.gradle:173

-def command = "node ./node_modules/react-native/cli.js config"
+def command = "node ./node_modules/react-native/local-cli/cli.js config"

[ErnesII]

For me it was just something stupid, in the file react-native.config.js, I just commented these lines:

project: {
      ios: {},
      android: {}, // grouped into "project"
    },
commands: require('./path-to-commands.js'),

[tbergquist-godaddy]

Hi, I am also getting this error, and . I cannot seem to configure it correctly with the current options(I am hoping there is something I missed 😊 )

currently we have a structure like

root/
  node_modules/
  apps/
      web/
      rn-app-1/
      rn-app-2/
  packages/
      shared-components/

Setting root to the project root, it will try to run node ./node_modules/react-native/cli.js config in the project root, and report error on this line : this.packageName = json["project"]["android"]["packageName"].

Setting the root to rn-app-1, gives error on this line def json = new JsonSlurper().parseText(reactNativeConfigOutput)

Both errors makes sense, since the project root does not contain an rn app, and ./node_modules/react-native/cli.js is not a valid path from the workspace root.

What does work is keeping the root at the rn-app-1 workspace and change the command to /node_modules/.bin/react-native config.

I know there is an option using the nohoist of react-native, but I would rather not, since DX is quite bad, we had it before, and upgrading dependencies could take up to 15 minutes ⌛️

So, is there some setting I have missed, or would there be a possibility to add some config to tell rn-cli where to look for the rn-app config?

[tbergquist-godaddy]

@thymikee @grabbou please ^^ 🙏

[ldco2016]

@thymikee , how can I confirm if this -> https://github.com/react-native-community/cli/blob/master/docs/autolinking.md#custom-root-monorepos-1

is the issue with Azure DevOps build? I do not get this error locally, but my Azure DevOps person consistently does. Do you or anyone know if the above is something that must be applied when building react-native in Azure?

[alishgiri]

please first verify the npm -v and node -v gives you some version number.

The problem was with using yarn. I use yarn instead of npm and was getting this error. when I reinstalled node then the problem was resolved. No need to change the node_modules files as it did manage to run but created several other problems later on. Hope this helps yarn lovers!