SHELL

public class FileProvider extends android.support.v4.content.FileProvider

# install
npm install -D jetifier

# run
npx jetifier && ng build

error public class FileProvider extends android.support.v4.content.FileProvider

// Reference: https://github.com/mikehardy/jetifier

1 First, use Android Studio's refactoring tool to convert your app re: the Android developer docs
2 npm install --save-dev jetifier
3 npx jetify
4 npx react-native run-android (your app should correctly compile and work)
5 Call npx jetify run in the postinstall target of your package.json (Any time your dependencies update you have to jetify again)

-- ED
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