Error android project not found are you sure this is a react native project

After updating the latest version of React native 0.62 i have faced a problem while running react native android project. The error is noted as ” Android project not found. Are you sure this is a React Native project? If your Android files are located in a non-standard location (e.g. not inside ‘android’ folder) consider setting ‘project.android.sourceDir’ option to point to a new location. Run CLI with –verbose flag for more details. ” This error is mainly comes when we try to install new package in react native project and for some reason the package dose not install properly. To solve this error we have 2 Solutions. We will discus both solutions in current tutorial.

Screenshot of Error message:

Solution 1 :

1. Open your React Native Project Root Directory and locate android -> app -> build -> intermediates -> signing_config -> debug -> out -> signing-config.json .

2. Delete the signing-config.json file and then again GoTo your react native project root directory and run again project using
react—native run—android command.  After this your react native project will run successfully.

Solution 2:

1. Sometimes if we have older version of react native and some of newly installed packages dose not support older version. Then you have to update the react native project using
react—native upgrade command.

2. After done updating current project to new version this error should resolved.

Here, app.json does not have name, but it has expo related config.
So just add name and display name fields in app.json.

app.json (first two lines) :

{
"name": "AwesomeProject",
"displayName": "Awesome Project",
"expo": {
    "name": "AwesomeProject",
    "description": "A very interesting project.",
    "slug": "AwesomeProject",
    "privacy": "public",
    "sdkVersion": "30.0.0",
    "platforms": ["ios", "android"],
    "ios": {
      "supportsTablet": true
    },
    "android": {
      "package": "com.project.first"
    },
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/images/icon.png",
    "splash": {
      "image": "./assets/images/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": [
      "**/*"
    ]
  }
}

After this, just run :

$ react-native eject

info Generating the iOS folder.

info Generating the Android folder.

No need to do react-native upgrade.

You may encounter this «Android project not found. Maybe run react-native android first» error message when you try to deploy the react-native application to your mobile device. As far as I figured there are two things that you may have to do while doing a fix for this issue.

1. Straight forward solution.  
In most of the cases, this will sort out this error by upgrading the react-native package in the root folder.

• Go to the Project Root.
• Upgrade the React native package in the Command Prompt by typing :
      react-native upgrade
• Then Accept to update all the Files by typing y (Yes) in the Command Prompt.

2. GIT based upgrade.
You might see another option saying to upgrade git related package as the following message:
«You should consider using the new upgrade tool based on Git. It makes upgrades easier by resolving most conflicts automatically.»

• Go back to the old version of React Native.
• Run npm install -g react-native-git-upgrade
• Run react-native-git-upgrade

See https://facebook.github.io/react-native/docs/upgrading.html
Your project needs to have a name, declared in package.json, such as «name»: «AwesomeApp». Please add a project name. Aborting.

error Android project not found. Are you sure this is a React Native project? If your Android files are located in a non-standard location (e.g. not inside 'android' folder), consider setting `project.android.sourceDir` option to point to a new location. Run CLI with --verbose flag for more details.

5 ответов

npm i react-native-eject
npm i @react-native-community/cli


react-native eject
react-native upgrade