harveyconnor

React Native Swift Module Singleton Pattern

If you are reading this tutorial please be aware that this is for advanced users that require a singleton pattern in their RN native module and some documentation detail is left out intentionally.

For the sake of this tutorial we will be using TestManager as our class.

Instructions

1. First of all you need to setup a swift class with a bridging header, in Xcode it will generate this for you upon creating a Swift file.
2. Create your swift class with the @objc directive.
3. Create a second class that has a static export of the class in singleton.
4. Follow the files below for a boilerplat example.

sundeepgupta

#!/bin/bash

# Adapted from http://stackoverflow.com/questions/24039470/xcode-6-ios-creating-a-cocoa-touch-framework-architectures-issues/26691080#26691080
# and https://gist.github.com/cromandini/1a9c4aeab27ca84f5d79

# Create a new aggregate target.
# For the automatically generated scheme, change its build config to "release".
# Ensure this target's "product name" build setting matches the framework's.
# Add a run script with `source "${PROJECT_DIR}/path_to_this_script`

steipete

# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

# (A similar approach works for older versions too, just change the version number after DeviceSupport)