IOS原生项目集成Unity3D

第1步 unity3D导出Xcode项目

123

第2步将项目导入到ios原生项目

1.将Classes,Libraries,MapFileParser.sh拖入到项目(选中Copy items if needed,选中Create groups)

2.将Data拖入到项目(选中Copy items if needed,选中Create folder references)

*拖入方式

如果选择了Create groups方式添加了一个文件，我们会发现被添加进来的文件，文件夹是黄色的，groups下的cpp文件是会被编译的

选择了 Create folder references方式添加进来的文件的文件夹是蓝色的，只是将文件单纯的创建了引用，这些文件不会被编译，所以在使用的时候需要加入其路径

3.修改ios原生项目的bit code为NO

4.添加framework

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*由于每个Unity 3D项目不同，导致所需要framework也不同，打开Unity 3DXcode项目，把所有的framework在原生项目中添加，如果有第三方的库，把库从Unity 3DXcode项目中导出到原生项目，并且在Framework Search Paths添加路径

*Unity 3DXcode项目中有个别库的Status 选择的Optional，如图

5.在Header Search Paths和Library Search Paths 添加Unity3D 文件夹 Classes、Native、include 路径（根据自己项目实际文件路径配置）

*$(SRCROOT) 代表的是项目根目录下 $(PROJECT_DIR)代表的是整个项目

6.修改Build Settings 下 other C Flags -> -DINIT_SCRIPTING_BACKEND=1

7.添加User-Defined 将Unity 3D项目中的User-Defined里的配置项添加到原生项目中

8.添加Run Script

*MapFileParser.sh 路径根据实际项目路径添加

第3步修改原生代码

1.将Classes/main.mm内容复制到main.m 并把扩展名改为.mm，删除Unity3D Class 文件夹下main.mm 文件，删除操作选择Remove Reference

#import <UIKit/UIKit.h>
#import "AppDelegate.h"
#include "RegisterFeatures.h"
#include "RegisterMonoModules.h"
#include <csignal>

static const int constsection = 0;

void UnityInitTrampoline();

const char* AppControllerClassName = "AppDelegate";

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

    @autoreleasepool {
        UnityInitTrampoline();
        UnityInitRuntime(argc, argv);
        RegisterMonoModules();
        NSLog(@"-> registered mono modules %p\n", &constsection);
        RegisterFeatures();
        
        std::signal(SIGPIPE, SIG_IGN);
        
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

#if TARGET_IPHONE_SIMULATOR && TARGET_TVOS_SIMULATOR

#include <pthread.h>

extern "C" int pthread_cond_init$UNIX2003(pthread_cond_t *cond, const pthread_condattr_t *attr)
{ return pthread_cond_init(cond, attr); }
extern "C" int pthread_cond_destroy$UNIX2003(pthread_cond_t *cond)
{ return pthread_cond_destroy(cond); }
extern "C" int pthread_cond_wait$UNIX2003(pthread_cond_t *cond, pthread_mutex_t *mutex)
{ return pthread_cond_wait(cond, mutex); }
extern "C" int pthread_cond_timedwait$UNIX2003(pthread_cond_t *cond, pthread_mutex_t *mutex,
                                               const struct timespec *abstime)
{ return pthread_cond_timedwait(cond, mutex, abstime); }

#endif // TARGET_IPHONE_SIMULATOR && TARGET_TVOS_SIMULATOR

2 修改AppDelegate.h

#import <UIKit/UIKit.h>

@class UnityAppController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (nonatomic, strong) UnityAppController * unityController;

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) UIWindow *unityWindow;

-(void)showUnityWindow;

-(void)hideUnityWindow;

@end

3 修改AppDelegate.m 添加如下代码

*核心就是切换window

#import "UnityAppController.h"

@implementation AppDelegate

-(UIWindow *)unityWindow{
    return UnityGetMainWindow();
}

-(void)showUnityWindow{
    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
    button.frame = CGRectMake(0, 0, 44, 44);
    button.backgroundColor = [UIColor redColor];
    [button setTitle:@"返回" forState:UIControlStateNormal];
    [button addTarget:self action:@selector(hideUnityWindow) forControlEvents:UIControlEventTouchUpInside];
    [self.unityWindow addSubview:button];
    [[UIApplication sharedApplication] setStatusBarHidden:YES];
    [self.unityWindow makeKeyAndVisible];
}

-(void)hideUnityWindow{
    [[UIApplication sharedApplication] setStatusBarHidden:NO];
    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];
    [self.window makeKeyAndVisible];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
    
    ViewController * vc = [[ViewController alloc]init];
    self.window.rootViewController = vc;
    
    self.unityController = [[UnityAppController alloc]init];
    [self.unityController application:application didFinishLaunchingWithOptions:launchOptions];
    
    [self.window makeKeyAndVisible];
   
    
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    [self.unityController applicationWillResignActive:application];
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    [self.unityController applicationDidEnterBackground:application];
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    [self.unityController applicationWillEnterForeground:application];
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    [self.unityController applicationDidBecomeActive:application];
}

- (void)applicationWillTerminate:(UIApplication *)application {
    [self.unityController applicationWillTerminate:application];
}

@end

4 合并 .pch 文件,如果之前没有创建一个,删除Unity/Classes/Prefix.pch,删除操作选择Remove Reference

#ifndef PrefixHeader_pch
#define PrefixHeader_pch

// Include any system framework and library headers here that should be included in all compilation units.
// You will also need to set the Prefix Header build setting of one or more of your targets to reference this file.



#ifdef __OBJC__
#import <Foundation/Foundation.h>
#include "UnityAppController.h"
#import <UIKit/UIKit.h>
#endif

#include "Preprocessor.h"

#include "UnityTrampolineConfigure.h"
#include "UnityInterface.h"

#ifndef __OBJC__
#if USE_IL2CPP_PCH
#include "il2cpp_precompiled_header.h"
#endif
#endif

#ifndef TARGET_IPHONE_SIMULATOR
#define TARGET_IPHONE_SIMULATOR 0
#endif

#define printf_console printf


#endif /* PrefixHeader_pch */

5.修改UnityAppController.mm

#import "AppDelegate.h"





inline UnityAppController*  GetAppController()
{
    AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
    return delegate.unityController;
//    return (UnityAppController*)[UIApplication sharedApplication].delegate;
//    return (UnityAppController*)[[UIApplication sharedApplication] valueForKeyPath:@"delegate.unityAppController"];
}

第4步有可能遇到的问题收集来的，也有自己遇到的

1 Unity 3D不支持竖屏，原生项目支持竖屏

//#pragma mark    -       横竖屏处理
- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    if(isUnity){
        //游戏的转屏方向    isUnity 在showUnityWindow 中赋值为YES
        return UIInterfaceOrientationMaskLandscapeLeft||UIInterfaceOrientationMaskLandscapeRight;
    }
    //应用的转屏方向
    return UIInterfaceOrientationMaskPortrait;
}

2.Unknown type name 'UnityViewControllerBase'

解决办法就是把它改成UIViewController

3.iOS本地应用跳转unity的时候出现黑屏

原因是你的u3d工程集成了EasyAR插件，而这个插件下有个Assets/Plugins/iOS/EasyARAppController.mm，

@interface EasyARAppController : UnityAppController，这是整个app启动时的第一个controller，自己修改合并这个controller就OK了

或者是将EasyARAppController.mm的内容复制到你的自定义的子类中去，然后删除引用也是OK的

在UnityAppController.mm里这个方法中写

IOS原生项目集成Unity3D

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