To run your app on iOS: cd /Users/harrychen/Codes/ReactNativeApp react-native run-ios

• or - Open /Users/harrychen/Codes/ReactNativeApp/ios/ReactNativeApp.xcodeproj in Xcode Hit the Run button

To run your app on Android: Have an Android emulator running (quickest way to get started), or a device connected cd /Users/harrychen/Codes/ReactNativeApp react-native run-android