Why does standalone react-native app doesn't work but works well on Expo Client? How to fix it?

Question

I am building a react native app, things work fine on expo client. But I am getting: 'Uncaught Error: Error calling AppRegistry.runApplication' in the log after splash screen.

I have added AppRegistry.registerComponent('main', ()=> App) and this works through Expo client. I was creating the SDK through expo build:android.

{
  "main": "App.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "eject": "expo eject",
    "test": "node ./node_modules/jest/bin/jest.js --watchAll"
  },
  "jest": {
    "preset": "jest-expo"
  },
  "dependencies": {
    "@expo/samples": "2.1.1",
    "expo": "^32.0.0",
    "react": "16.5.0",
    "react-native": "https://github.com/expo/react-native/archive/sdk-32.0.0.tar.gz",
    "react-native-elements": "^1.1.0",
    "react-native-material-cards": "^1.0.9",
    "react-native-shadow": "^1.2.2",
    "react-navigation": "^3.0.9",
    "typescript": "^3.4.1"
  },
  "devDependencies": {
    "babel-preset-expo": "^5.0.0",
    "jest-expo": "^32.0.0"
  },
  "private": true
}

I don't see anything wrong. Can you post your .babelrc as well? — Yossi, Mar 30 '19 at 15:46
If it exists, it is in the home folder. Do you see any file whose name is starting with '.'? If not, maybe your hidden files are not shown. — Yossi, Mar 30 '19 at 16:01

score 0 · Answer 1 · answered Mar 30 '19 at 15:49

0

When you entered 'expo init appname', is the name you entered 'main'?

AppRegistry.registerComponent('AppName', () => componentName)

If not, refer to this link.

C:\Users\username\AppData\Local\Android\Sdk\platform-tools\ open a terminal from here. And type adb reverse tcp:8081 tcp:8081

answered Mar 30 '19 at 15:49

hong developer

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No, it wasn't 'main'. It was 'AwesomeProject'. I am sure the link confused me more. I started react-native or any app development 4 days back. So pardon my ignorance. – NoobNerd Mar 30 '19 at 15:57
It's okay. Anyone can make that mistake. – hong developer Mar 30 '19 at 16:02
What about in macOS? – NoobNerd Mar 30 '19 at 16:06
If the path is not set, open `./bash_profile` // `export PATH=${PATH}:/Users/UserId/library/android/sdk/tools:${PATH}:/Users/UserId/library/android/sdk/platform-tools` – hong developer Mar 30 '19 at 16:16
Nothing changed :( – NoobNerd Mar 30 '19 at 16:34
you changed `Appname` and tried `adb reverse tcp:8081 tcp:8081`, but it didn't work out? – hong developer Mar 30 '19 at 16:45
I am not using emulator. so that won't work anyway right? – NoobNerd Mar 30 '19 at 17:06
If 'Expo' has been separated as 'react-native', it can only be run as an emulator. – hong developer Mar 30 '19 at 17:23

Why does standalone react-native app doesn't work but works well on Expo Client? How to fix it?

1 Answers1