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getting-started.md

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Getting started

Export project from Unity

iOS

UNITY PLAYER SETTINGS

  1. Multitasking -> Requires Fullscreen -> no selection set !
  2. Status Bar -> Status Bar Hidden -> no selection set !
  3. Other Settings -> Target SDK -> select Device SDK or Simulator SDK

Android

BUILD SETTINGS

  1. Export project -> selection set !

UNITY PLAYER SETTINGS

  1. Resolution and Presentation -> Fullscreen Mode -> select Windowed
  2. Resolution and Presentation -> Resizable Window -> selection set !
  3. Resolution and Presentation -> Hide Navigation Bar -> no selection set !
  4. Resolution and Presentation -> Render outside safe area -> no selection set !
  5. Other Settings -> Scripting Backend -> select IL2CPP
  6. Other Settings -> Target Architectures -> ARM64 -> selection set !

Import project in React Native

  1. Install react-native-unity2 via npm
  2. Move your Unity project to unity folder at project root

iOS

  1. Run pod install
  2. Build Unity app to [project_root]/unity/builds/ios

NB: Remember to build the Xcode project generated by Unity first, because an intact UnityFramework.framework is required to successfully build your workspace afterwards.

  1. Add Unity-iPhone.xcodeproj to your workspace: Menu -> File -> Add Files to [workspace_name]... -> [project_root]/unity/builds/ios/Unity-iPhone.xcodeproj
  2. Add UnityFramework.framework to Frameworks, Libraries, and Embedded Content:
    • select your_app target in workspace
    • in General / Frameworks, Libraries, and Embedded Content press +
    • select Unity-iPhone/Products/UnityFramework.framework
    • in Build Phases remove UnityFramework.framework from Linked Frameworks and Libraries ( select it and press - )
    • in Build Phases move Embedded Frameworks before Compile Sources ( drag and drop )
  3. Add Data to Copy Bundle Resources
    • select Unity-iPhone project in workspace
    • select UnityFramework in targets
    • in Build Phases add Data to Copy Bundle Resources

Objective-C

Click to expand!

Add the following lines to your main.m file

#import <UIKit/UIKit.h>
+++ #import <RNUnity/RNUnity.h>

#import "AppDelegate.h"

int main(int argc, char * argv[]) {
  @autoreleasepool {
    +++ [RNUnity setArgc:argc];
    +++ [RNUnity setArgv:argv];
    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
  }
}

Add the following lines to your AppDelegate.mm file

#import "AppDelegate.h"

#import <React/RCTBundleURLProvider.h>
+++ #import <RNUnity/RNUnity.h>

+++ - (void)applicationWillResignActive:(UIApplication *)application { [[[RNUnity ufw] appController] applicationWillResignActive: application]; }
+++ - (void)applicationDidEnterBackground:(UIApplication *)application { [[[RNUnity ufw] appController] applicationDidEnterBackground: application]; }
+++ - (void)applicationWillEnterForeground:(UIApplication *)application { [[[RNUnity ufw] appController] applicationWillEnterForeground: application]; }
+++ - (void)applicationDidBecomeActive:(UIApplication *)application { [[[RNUnity ufw] appController] applicationDidBecomeActive: application]; }
+++ - (void)applicationWillTerminate:(UIApplication *)application { [[[RNUnity ufw] appController] applicationWillTerminate: application]; }

@end

Swift

Click to expand!

Make the following changes to your AppDelegate.swift file

@UIApplicationMain
class AppDelegate: UIApplicationDelegate {
  init() {
    RNUnity.initFromSwift()
  }

  func applicationWillResignActive(_ application: UIApplication) {
    RNUnity.applicationWillResignActive(application)
  }

  func applicationDidEnterBackground(_ application: UIApplication) {
    RNUnity.applicationDidEnterBackground(application)
  }

  func applicationWillEnterForeground(_ application: UIApplication) {
    RNUnity.applicationWillEnterForeground(application)
  }

  func applicationDidBecomeActive(_ application: UIApplication) {
    RNUnity.applicationDidBecomeActive(application)
  }

  func applicationWillTerminate(_ application: UIApplication) {
    RNUnity.applicationWillTerminate(application)
  }
}

Android

  1. Create directory into android/app/libs

  2. Copy libs from <project_name>/unity/builds/android/unityLibrary/libs/* to android/app/libs

  3. Add ndk support into android/app/build.gradle

    defaultConfig {
    ...
    ndk {
        abiFilters "armeabi-v7a", "arm64-v8a"
    }
}

  4. Append the following lines to android/settings.gradle:

    include ':unityLibrary'
project(':unityLibrary').projectDir=new File('..\\unity\\builds\\android\\unityLibrary')

  5. Insert the following lines inside the dependencies block in android/app/build.gradle:

      implementation project(':unityLibrary')
  implementation files("${project(':unityLibrary').projectDir}/libs/unity-classes.jar")

  6. Add strings to res/values/strings.xml

    <string name="game_view_content_description">Game view</string>
<string name="unity_root">unity_root</string>

  7. Update .MainActivity into AndroidManifest.xml

    <application
  ...
  android:extractNativeLibs="true"

<activity
  android:name=".MainActivity"
  ...
  android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale|layoutDirection|density"
  android:hardwareAccelerated="true"
>

  8. Setup minSdkVersion greater than or equal to 21

  9. Remove <intent-filter>...</intent-filter> from <project_name>/unity/builds/android/unityLibrary/src/main/AndroidManifest.xml at unityLibrary to leave only integrated version.

  10. Add to android/gradle.properties

    unityStreamingAssets=.unity3d

  11. Add to build.gradle

    allprojects {
    repositories {
        flatDir {
            dirs "$rootDir/app/libs"
        }

  12. <project_name>/unity/builds/android/unityLibrary/src/main/AndroidManifest.xml delete android:icon="@mipmap/app_icon" and android:theme="@style/UnityThemeSelector" if they are installed