Swift3整合Unity5.6

作者: Stefans23 | 来源:发表于2017-06-15 18:48 被阅读1081次

前言

因为公司项目需要，通过Unity做一个AR项目，并且整合到现有项目中，其中遇到了一些坑，也被很多人帮助过，特来记录一下，希望大家能少走一些弯路。
其中涉及到的开发工具及相关语言有

Unity 5.6.1
xcode 8.3.3
Swift 3.1
AR引擎 EasyAR 2.0
cocoapods

参考案例

准备工作

因为项目中使用到了EasyAR的AR SDK，但并不是每个人都需要，所以有需要的请自行到EasyAR官网下载并注册成为开发者，目前最新版本为2.0（官方分为Basic和Pro两个版本），本项目使用的是Pro（包括以前的1.3.1版本其实都是类似的）。

开始

一. Unity导出iOS工程

新建一个新的Unity工程

image.png

把从EasyAR官网下载的unitypackage包导入到项目中，由于EasyAR不是这里的重点，所以相关设置等请自行官网解决。设置完成后导出iOS工程

image.png

以下是导出成功的iOS工程（oc版本）

image.png

到这里Unity的工作就结束了，建议大家先运行导出的iOS工程看手机上是否正常。

二. 新建iOS工程（Swift3）

1. 添加Unity.xcconfig文件到项目

相关文件地址

//
//  Unity.xcconfig
//
//
//  Created by Stefans on 2017/6/14.
//  Copyright © 2016年 Stefans. All rights reserved.
//

UNITY_RUNTIME_VERSION = 5.6.1;
UNITY_SCRIPTING_BACKEND = il2cpp;
GCC_THUMB_SUPPORT = NO;
GCC_USE_INDIRECT_FUNCTION_CALLS = NO
UNITY_IOS_EXPORT_PATH = $(PROJECT_DIR)/unity_ios;
GCC_PREFIX_HEADER = $(UNITY_IOS_EXPORT_PATH)/Classes/Prefix.pch;

OTHER_LDFLAGS = -weak-lSystem -weak_framework CoreMotion -weak_framework GameKit -weak_framework iAd -framework CoreGraphics -framework AVFoundation -framework CoreVideo -framework CoreMedia -framework SystemConfiguration -framework CoreLocation -framework MediaPlayer -framework CFNetwork -framework AudioToolbox -framework OpenAL -framework QuartzCore -framework OpenGLES -framework UIKit -framework Foundation -liconv.2 -liPhone-lib;

HEADER_SEARCH_PATHS = $(inherited) $(UNITY_IOS_EXPORT_PATH) $(UNITY_IOS_EXPORT_PATH)/Classes $(UNITY_IOS_EXPORT_PATH)/Classes/Native $(UNITY_IOS_EXPORT_PATH)/Classes/UI $(UNITY_IOS_EXPORT_PATH)/Libraries $(UNITY_IOS_EXPORT_PATH)/Libraries/libil2cpp/include $(UNITY_IOS_EXPORT_PATH)/Libraries/bdwgc/include;
LIBRARY_SEARCH_PATHS = $(inherited) $(UNITY_IOS_EXPORT_PATH) $(UNITY_IOS_EXPORT_PATH)/Libraries $(UNITY_IOS_EXPORT_PATH)/Libraries/libil2cpp/include;

ENABLE_BITCODE = NO;

//请根据自己的项目修改
SWIFT_OBJC_BRIDGING_HEADER = $(PROJECT_DIR)/$(PRODUCT_NAME)/UnityBridge.h;

OTHER_CFLAGS = -DINIT_SCRIPTING_BACKEND=1;
CLANG_CXX_LANGUAGE_STANDARD = compiler-default;
CLANG_CXX_LIBRARY = libc++;
CLANG_WARN_BOOL_CONVERSION = NO;
CLANG_WARN_CONSTANT_CONVERSION = NO;
CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES;
CLANG_WARN_EMPTY_BODY = NO;
CLANG_WARN_ENUM_CONVERSION = NO;
CLANG_WARN_INT_CONVERSION = NO;
CLANG_WARN_OBJC_ROOT_CLASS = YES;
CLANG_WARN_UNREACHABLE_CODE = NO;
CLANG_WARN__DUPLICATE_METHOD_MATCH = NO;
GCC_C_LANGUAGE_STANDARD = c99;
GCC_ENABLE_OBJC_EXCEPTIONS = NO;
GCC_PRECOMPILE_PREFIX_HEADER = YES;
GCC_THUMB_SUPPORT = NO;
GCC_USE_INDIRECT_FUNCTION_CALLS = NO;
GCC_WARN_64_TO_32_BIT_CONVERSION = NO;
GCC_WARN_64_TO_32_BIT_CONVERSION[arch=*64] = YES;
GCC_WARN_ABOUT_RETURN_TYPE = YES;
GCC_WARN_UNDECLARED_SELECTOR = NO;
GCC_WARN_UNINITIALIZED_AUTOS = NO;
GCC_WARN_UNUSED_FUNCTION = NO;
GCC_NO_COMMON_BLOCKS = NO;
CLANG_ENABLE_MODULES = NO;

CLANG_WARN_DOCUMENTATION_COMMENTS = NO;

CLANG_WARN_EMPTY_BODY = NO;
CLANG_WARN_INFINITE_RECURSION = NO;
GCC_WARN_ABOUT_RETURN_TYPE = YES;
GCC_WARN_UNINITIALIZED_AUTOS = NO;
CLANG_WARN_UNREACHABLE_CODE = NO;

GCC_WARN_UNUSED_FUNCTION = NO;

CLANG_WARN__DUPLICATE_METHOD_MATCH = NO;

//CLANG_CXX_LANGUAGE_STANDARD = "c++0x";

下载Unity.xcconfig后如下图做相应配置

image.png

2. 添加UnityBridge.h UnityUtils.h UnityUtils.mm 到项目

//
//  UnityBridge.h
//
//  Created by Adam Venturella on 10/28/15.
//

#ifndef UnityBridge_h
#define UnityBridge_h

#import "UnityUtils.h"
#import "UnityAppController.h"
#import "Unity/UnityInterface.h"
#endif /* UnityBridge_h */



/**
 * Replacement Function for UnityAppController.h
 *
 */
/*
 NS_INLINE UnityAppController* GetAppController(){
 NSObject<UIApplicationDelegate>* delegate = [UIApplication sharedApplication].delegate;
 UnityAppController* currentUnityController = (UnityAppController *)[delegate valueForKey:@"currentUnityController"];
 return currentUnityController;
 }
 */

//
//  UnityUtils.h
//
//  Created by Adam Venturella on 10/28/15.
//

#ifndef UnityUtils_h
#define UnityUtils_h


void custom_unity_init(int argc, char* argv[]);

#endif /* UnityUtils_h */

//
//  UnityUtils.m
//
//  Created by Adam Venturella on 10/28/15.
//
// this is taken directly from the unity generated main.mm file.
// if they change that initialization, this will need to be updated
// as well.


#include "RegisterMonoModules.h"
#include "RegisterFeatures.h"
#include <csignal>


// Hack to work around iOS SDK 4.3 linker problem
// we need at least one __TEXT, __const section entry in main application .o files
// to get this section emitted at right time and so avoid LC_ENCRYPTION_INFO size miscalculation
static const int constsection = 0;

void UnityInitTrampoline();


extern "C" void custom_unity_init(int argc, char* argv[])
{
    @autoreleasepool
    {
        UnityInitTrampoline();
//        UnityParseCommandLine(argc, argv); //Unity 5.3+
        UnityInitRuntime(argc, argv); //Unity 5.6+，5.4和5.5用哪个我没试过，可以根据报错情况选择。
        
        RegisterMonoModules();
        NSLog(@"-> registered mono modules %p\n", &constsection);
        RegisterFeatures();
        
        // iOS terminates open sockets when an application enters background mode.
        // The next write to any of such socket causes SIGPIPE signal being raised,
        // even if the request has been done from scripting side. This disables the
        // signal and allows Mono to throw a proper C# exception.
        std::signal(SIGPIPE, SIG_IGN);
    }
}

image.png

3. 将Unity导出的文件导入到xcode工程中

只需要导入Classes、Data、Libraries三个文件夹

image.png

新建文件夹并重命名为：unity_ios，把这三个文件夹拷贝进去

image.png

确认一下工程配置

image.png

以及更改下Unity_Runtime_Path为5.6.1（填写你自己的unity版本就好了）

image.png

4. 添加Run Script到Build Phases

rm -rf "$TARGET_BUILD_DIR/$PRODUCT_NAME.app/Data";
cp -Rf "$UNITY_IOS_EXPORT_PATH/Data" "$TARGET_BUILD_DIR/$PRODUCT_NAME.app/Data";

image.png

5. Classes、Data、Libraries文件导入到项目中

Classes, Libraries 设置 Create groups

image.png

Data 设置 Create folder references

image.png

原版里面建议删除一些引用，虽然会加快编译速度，但是每次更新都删除的话也是挺耗时的，所以如果有需要的话建议看看原版。

6. 变更Unity里的方法

找到main.mm

//int main(int argc, char* argv[])
//{
//    signed long long startTime = mach_absolute_time();
//    @autoreleasepool
//    {
//        UnitySetStartupTime(startTime);
//        UnityInitTrampoline();
//        UnityInitRuntime(argc, argv);
//
//        RegisterMonoModules();
//        NSLog(@"-> registered mono modules %p\n", &constsection);
//        RegisterFeatures();
//
//        // iOS terminates open sockets when an application enters background mode.
//        // The next write to any of such socket causes SIGPIPE signal being raised,
//        // even if the request has been done from scripting side. This disables the
//        // signal and allows Mono to throw a proper C# exception.
//        std::signal(SIGPIPE, SIG_IGN);
//
//        UIApplicationMain(argc, argv, nil, [NSString stringWithUTF8String: AppControllerClassName]);
//    }
//
//    return 0;
//}
//替换为
int main_unity_default(int argc, char* argv[])
{
    @autoreleasepool
    {
        UnityInitTrampoline();
//        UnityParseCommandLine(argc, argv); //Unity 5.3+
        UnityInitRuntime(argc, argv); //Unity 5.6+，5.4和5.5用哪个我没试过，可以根据报错情况选择。
        
        RegisterMonoModules();
        NSLog(@"-> registered mono modules %p\n", &constsection);
        RegisterFeatures();
        
        // iOS terminates open sockets when an application enters background mode.
        // The next write to any of such socket causes SIGPIPE signal being raised,
        // even if the request has been done from scripting side. This disables the
        // signal and allows Mono to throw a proper C# exception.
        std::signal(SIGPIPE, SIG_IGN);
        
        //UIApplicationMain(argc, argv, nil, [NSString stringWithUTF8String:AppControllerClassName]);
        //        UIApplicationMain(argc, argv, nil, NSStringFromClass([UnitySubAppDelegate class]));
        UIApplicationMain(argc, argv, nil, [NSString stringWithUTF8String:AppControllerClassName]);
    }
    
    return 0;
}

找到UnityAppController.h

//最上面添加
#import <UIKit/UIKit.h>

//注释该方法
//inline UnityAppController*  GetAppController()
//{
//    return (UnityAppController*)[UIApplication sharedApplication].delegate;
//}
//替换为此方法
NS_INLINE UnityAppController* GetAppController()
{
    NSObject<UIApplicationDelegate>* delegate = [UIApplication sharedApplication].delegate;
    UnityAppController* currentUnityController = (UnityAppController *)[delegate valueForKey:@"currentUnityController"];
    return currentUnityController;
}

7. 修改自己的项目

找到AppDelegate.swift并作如下修改

//
//  AppDelegate.swift
//  SwiftCombineUnityProject
//
//  Created by Stefans on 2017/6/14.
//  Copyright © 2017年 Stefans. All rights reserved.
//

import UIKit

//注释@UIApplicationMain, 让swift从main.swift启动
//@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?
    var currentUnityController: UnityAppController!

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        currentUnityController = UnityAppController()
        currentUnityController.application(application, didFinishLaunchingWithOptions: launchOptions)
        
        window = UIWindow.init(frame: UIScreen.main.bounds)
        let sb = UIStoryboard.init(name: "Main", bundle: nil)
        let vc = sb.instantiateInitialViewController()
        window?.rootViewController = vc!;
        window!.makeKeyAndVisible()
        return true
    }

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

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

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

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

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

添加一个新的main.swift文件到项目

//
//  main.swift
//  SwiftCombineUnityProject
//
//  Created by Stefans on 2017/6/15.
//  Copyright © 2017年 Stefans. All rights reserved.
//

import Foundation
import UIKit

custom_unity_init(CommandLine.argc, CommandLine.unsafeArgv)

UIApplicationMain(
    CommandLine.argc,
    UnsafeMutableRawPointer(CommandLine.unsafeArgv)
        .bindMemory(
            to: UnsafeMutablePointer<Int8>.self,
            capacity: Int(CommandLine.argc)),
    nil,
    NSStringFromClass(AppDelegate.self)
)

8. 添加依赖库

依赖库是最烦的，按照需求一个个添加吧，特别注意的是使用easyar或者其他ar sdk需要添加libc++.tbd ，其他的看项目。

image.png

9. 加载Unity View

//
//  ViewController.swift
//  SwiftCombineUnityProject
//
//  Created by Stefans on 2017/6/14.
//  Copyright © 2017年 Stefans. All rights reserved.
//

import UIKit

class ViewController: UIViewController {
    @IBAction func showUnity(_ sender: UIButton) {
        let unityview = UnityGetGLView()
        unityview?.frame = self.view.bounds;
        unityview?.center = self.view.center
        self.view.addSubview(unityview!)
        self.view.bringSubview(toFront: unityview!)
    }
}

完成之后就可连接真机调试了Let's GO！！！

三. 可能遇到的问题

目前该方式只支持真机调试，这点会有些不方便，特别是Unity本身不是完全核心，外面一层壳也有很多功能的时候

可以把Unity模块卸载掉，至于如何卸载，大家可以按照上面操作反向实验。

如果用到了AR SDK，会报错

大部分是因为没有给Camera权限，记得plist文件中给Camera的权限

image.png

使用EasyAR可能会导致黑屏

在unity_ios/Libraries/Plugins/iOS/EasyARAppController.mm中找到以下代码，并复制到UnityAppController.mm中

extern "C" void ezarUnitySetGraphicsDevice(void* device, int deviceType, int eventType);
extern "C" void ezarUnityRenderEvent(int marker);

image.png

并在UnityAppController.mm中实现以下内容：

    UnityRegisterRenderingPlugin(&ezarUnitySetGraphicsDevice, &ezarUnityRenderEvent);
}```

##四. 大功告成
到此Unity项目就整合进我们的Swift3工程中了，因为Unity版本也一直在更新变化，所以有些小细节部分也会变化，包括最开始整合的是Unity5.3版本，到现在5.6版本发生了些变化，大家根据报错提示做适当修改即可。后续会继续把cocoapod整合进去。

网友评论

foolish_hungry:Command PrecompileSwiftBridgingHeader failed with a nonzero exit code
打扰了, 报这个错, 怎么弄?
pingxhcn:你好，调用EasyAR黑屏使用你提供的方法不能解决，会报 Invalid Key or Bundle ID 这个错误，你遇见过吗？
pingxhcn:@Stefans23 谢谢，解决了，是因为EasyAR的Bundle ID 和项目的Bundle ID不一样，统一一下就正常调用相机了
Stefans23:@智者不愚应该是easyar的key和secret不对，你检查下。
binya:你好，大神在吗？想问你一个问题。
Silenceapple:厉害了

Swift3整合Unity5.6

前言

参考案例

准备工作

开始

一. Unity导出iOS工程

二. 新建iOS工程（Swift3）

1. 添加Unity.xcconfig文件到项目

2. 添加UnityBridge.h UnityUtils.h UnityUtils.mm 到项目

3. 将Unity导出的文件导入到xcode工程中

4. 添加Run Script到Build Phases

5. Classes、Data、Libraries文件导入到项目中

6. 变更Unity里的方法

7. 修改自己的项目

8. 添加依赖库

9. 加载Unity View

三. 可能遇到的问题

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