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running-on-device-ios
Running On Device
docs
Guides (iOS)
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embedded-app-ios

Note that running on device requires Apple Developer account and provisioning your iPhone. This guide covers only React Native specific topic.

Accessing development server from device

You can iterate quickly on device using development server. To do that, your laptop and your phone have to be on the same wifi network.

  1. Open AwesomeApp/ios/AwesomeApp/AppDelegate.m
  2. Change the IP in the URL from localhost to your laptop's IP
  3. In Xcode select your phone as build target and press "Build and run"

Hint

Shake the device to open development menu (reload, debug, etc.)

Using offline bundle

You can also pack all the JavaScript code within the app itself. This way you can test it without development server running and submit the app to the AppStore.

  1. Open AwesomeApp/ios/AwesomeApp/AppDelegate.m
  2. Follow the instructions for "OPTION 2":
  • Uncomment jsCodeLocation = [[NSBundle mainBundle] ...
  • Run the react-native bundle command in terminal from the root directory of your app

The bundle script supports a couple of flags:

  • --dev - sets the value of __DEV__ variable to true. When true it turns on a bunch of useful development warnings. For production it is recommended to set __DEV__=false.
  • --minify - pipe the JS code through UglifyJS.

Disabling in-app developer menu

When building your app for production, your app's scheme should be set to Release as detailed in the debugging documentation in order to disable the in-app developer menu.

Troubleshooting

If curl command fails make sure the packager is running. Also try adding --ipv4 flag to the end of it.

If you started your project a while ago, main.jsbundle might not be included into Xcode project. To add it, right click on your project directory and click "Add Files to ..." - choose the main.jsbundle file that you generated.