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一、需求

• 在iOS App中加入Unity3D元素，App通过用Unity提供的KPI实现功能操作

二、Unity集成到iOS原生项目

1. Unity导出的工程，可以作为独立的App上线，也可以Framework的形式继承到原生项目中（通常公司项目有需求的话都有招一个开发Unity，当然自己去学，做一个简单的demo还是挺简单的，网上教程也有很多）
2. Unity的集成有多种方式，我这里项目是有使用cocospod，并且现在的项目基本都使用pod，我这里只写有关联pod
3. 操作如下图：（NativeiOS是iOS原生项目，UnityTest_Device是Unity导出的工程，真机调试）

1. 将UnityTest_Device工程直接拖到NativeiOS，项目结构目录如下：

1. 打开原生项目，添加Unity到工作区，如下操作：

2. 原生项目结构

• 加入Untity，左下角“+”号 Files Add

• 选择Untiy-iPhone.xcodeproj

• 然后项目结构会变成如下图：

• 展开Unity-iPhone工程，选择Data文件夹，如图操作：

• 选择之后进行编译，得到Unity的frame

• 编译成功知道，展开iOS原生项目，选择target

• 加入frameword 之后已经完成了继承，接下来就是代码的实现

三、代码实现

• 1. main中实现

```oc int main(int argc, char * argv[]) {

NSString * appDelegateClassName;

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];     [userDefaults setObject:@(argc) forKey:@"argc"];     [userDefaults synchronize];

[userDefaults setObject:[NSString stringWithFormat:@"%p",argv] forKey:@"argv"];     [userDefaults synchronize];

@autoreleasepool {         // Setup code that might create autoreleased objects goes here.         appDelegateClassName = NSStringFromClass([AppDelegate class]);     }     return UIApplicationMain(argc, argv, nil, appDelegateClassName); } ``` - 2. AppDelegate.h

```oc

import

include

@interface AppDelegate : UIResponder

@property (nonatomic, strong) UIWindow      *window;

@property (nonatomic, strong) UnityFramework *ufw;

///展示Unity的view - (void)showUnityView;

///展示iOS原生的view - (void)showNativeView;

@end ```

1. AppDelegate.m

```oc /// UnityFrameworkLoad UIKIT_STATIC_INLINE UnityFramework UnityFrameworkLoad() {     NSString bundlePath = nil;     bundlePath = [[NSBundle mainBundle] bundlePath];     bundlePath = [bundlePath stringByAppendingString: @"/Frameworks/UnityFramework.framework"];     NSBundle* bundle = [NSBundle bundleWithPath: bundlePath];

if ([bundle isLoaded] == false) [bundle load];

UnityFramework* ufw = [bundle.principalClass getInstance];

if (![ufw appController]) {         // unity is not initialized         [ufw setExecuteHeader: &_mh_execute_header];     }     return ufw; }

• (BOOL)application:(UIApplication )application didFinishLaunchingWithOptions:(NSDictionary )launchOptions {     //初始化Unity     [self initUnity];

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];     [userDefaults setObject:launchOptions forKey:@"launchOptions"];     [userDefaults synchronize];     return YES; }

pragma mark - Unity

/// 判断Unity是否已经初始化 - (BOOL)unityIsInitialized {     return [self ufw] && [[self ufw] appController]; }

/// 初始化Unity - (void)initUnity {     // 判断Unity 是否已经初始化     if ([self unityIsInitialized]) return;

// 初始化Unity     self.ufw = UnityFrameworkLoad();     [self.ufw setDataBundleId:"com.unity3d.framework"];     [self.ufw registerFrameworkListener:self];

//  [NSClassFromString(@"FrameworkLibAPI") registerAPIforNativeCalls:self];

NSString argvStr = [[NSUserDefaults standardUserDefaults] valueForKey:@"argv"];     char argv;     sscanf([argvStr cStringUsingEncoding:NSUTF8StringEncoding], "%p",&argv);     int argc = [[[NSUserDefaults standardUserDefaults] valueForKey:@"argc"] intValue];     NSDictionary launchOptions = [[NSUserDefaults standardUserDefaults] valueForKey:@"launchOptions"];     [self.ufw runEmbeddedWithArgc:argc argv:argv appLaunchOpts:launchOptions]; }

///展示Unity的view - (void)showUnityView {     if (![self unityIsInitialized]){         NSLog(@"Unity 还未初始化");     }

[self.ufw showUnityWindow]; }

///展示iOS原生的view - (void)showNativeView {     [self.window makeKeyAndVisible]; }

pragma mark - UnityFrameworkListener

• (void)unityDidUnload:(NSNotification *)notification {     NSLog(@"========== %s ============",func);     [self.window makeKeyAndVisible];     [[self ufw] unregisterFrameworkListener: self];     [self setUfw: nil]; }

• (void)unityDidQuit:(NSNotification *)notification {     NSLog(@"========== %s ============",func); }

• (void)applicationWillResignActive:(UIApplication *)application {     [[[self ufw] appController] applicationWillResignActive: application]; }

• (void)applicationDidEnterBackground:(UIApplication *)application {     [[[self ufw] appController] applicationDidEnterBackground: application]; }

• (void)applicationWillEnterForeground:(UIApplication *)application {     [[[self ufw] appController] applicationWillEnterForeground: application]; }

• (void)applicationDidBecomeActive:(UIApplication *)application {     [[[self ufw] appController] applicationDidBecomeActive: application]; }

• (void)applicationWillTerminate:(UIApplication *)application {     [[[self ufw] appController] applicationWillTerminate: application]; } ```

• 1. 在自定义xxxController中，根据需求创建Unity的view

```oc 1.导入头文件

import "AppDelegate.h"

2.添加属性 /// unityContentView @property (nonatomic, weak) UIView *unityContentView;

/// AppDelegate @property (nonatomic, strong) AppDelegate *appDelegate;

• (void)awakeFromNib {     [super awakeFromNib];

AppDelegate appDelegate = (AppDelegate )([UIApplication sharedApplication].delegate);     self.appDelegate = appDelegate;

// Unity的view
UIView *view = self.appDelegate.ufw.appController.rootViewController.view;

view.frame = CGRectMake(0, 0, 300, 500);     [self addSubview:view]; }

///简单的功能操作 /// 减速 - (IBAction)slowDownClick:(UIButton *)sender { [self.appDelegate.ufw sendMessageToGOWithName:"ybot" functionName:"slowDown" message:""]; }

/// 加速 - (IBAction)accelerateClick:(UIButton *)sender { [self.appDelegate.ufw sendMessageToGOWithName:"ybot" functionName:"speedUp" message:""]; }

```