工具：
Unity版本：Unity 5.4.3f1
Xcode版本：Xcode 9.3.1
真機(jī)
一、導(dǎo)出iOS平臺的Unity項(xiàng)目
-
編譯設(shè)置：File -> Build Settings
-
設(shè)置公司名稱&產(chǎn)品名稱
-
iOS項(xiàng)目的配置文件
-
開始編譯
-
文件目錄
二把敢、Xcode集成Unity項(xiàng)目(兩種方式)
- 將原有iOS項(xiàng)目集成至unity項(xiàng)目中
- 將原工程直接拖拽到Unity生成的工程里，在Unity的工程上進(jìn)行開發(fā)谅辣。
- 將原工程的main.m文件修赞、AppDelegate.h和AppDelegate.m文件刪除，若有pch文件桑阶，也可與Unity工程中的Pch文件合并后刪除（刪除相關(guān)文件前請先備份柏副，合并后請檢查pch路徑是否正確）。
- 此時程序的主函數(shù)入口為Classes/main.mm蚣录，AppDelegate為Classes/UnityAppController.mm割择，程序的pch文件為Classes/Prefix.pch。將原工程的相應(yīng)代碼拷貝到相對應(yīng)的文件中即可萎河。
- 因?yàn)楝F(xiàn)在程序的入口在Unity工程端荔泳，所以原工程的主界面需在Unity工程運(yùn)行后，再添加到keyWindow上即可虐杯。
- 將unity項(xiàng)目集成至原有iOS項(xiàng)目中
- Unity導(dǎo)出的工程中的Bundle Identifier要和你本地iOS項(xiàng)目保持一致
- TARGETS -> Build Settings -> Build Options -> Enable Bitcode設(shè)置為NO
（Unity自帶的靜態(tài)庫：libmml.a等不支持bitcode） - 刪除Main.storyboard,代碼設(shè)置控制器(方便切換window)
- 將Classes,Libraries,MapFileParser.sh拖入到項(xiàng)目(選中Copy items if needed,選中Create groups)玛歌；
刪除Classes/Native文件夾下的所有.h文件的引用；
刪除Libraries文件夾下的libil2cpp和bdwgc文件夾的引用擎椰；
注意一定要選擇Remove Reference支子，千萬不要選擇Move to Trash！(下同) - 將Data拖入到項(xiàng)目(選中Copy items if needed,選中Create folder references)
- 將Classes中的
iPhone_target_Prefix.pch合并到項(xiàng)目原有的pch文件中后刪除該文件引用达舒；
若原項(xiàng)目中沒有值朋，準(zhǔn)確設(shè)置pch文件路徑即可(TARGETS -> Build Settings -> Apple LLVM 9.0 - Language -> Prefix Header :.pch file path)
// iPhone_target_Prefix.pch
//
// Prefix header
//
#ifdef __OBJC__
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#endif
#include "Preprocessor.h"
#include "UnityTrampolineConfigure.h"
#include "iPhone_Common.h"
#include "UnityInterface.h"
#ifdef __cplusplus
extern "C" {
#endif
void UnitySendMessage(const char* obj, const char* method, const char* msg);
#ifdef __cplusplus
}
#endif
#define printf_console printf
- 刪除Classes中的main.mm文件，修改Supporting Files中的main.m為main.mm（可以將main.m中的代碼替換為main.mm的代碼休弃，具體視情況而定吞歼，main函數(shù)之后調(diào)用UnityAppController.mm，也就是以前項(xiàng)目的AppDelegate.m文件不調(diào)用塔猾，可以刪除）
// main.mm
#import <UIKit/UIKit.h>
#include "RegisterClasses.h"
#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();
#if INIT_SCRIPTING_BACKEND
extern "C" void InitializeScriptingBackend();
#endif
// WARNING: this MUST be c decl (NSString ctor will be called after +load, so we cant really change its value)
const char* AppControllerClassName = "UnityAppController";
int main(int argc, char* argv[])
{
NSAutoreleasePool* pool = [NSAutoreleasePool new];
UnityInitTrampoline();
if(!UnityParseCommandLine(argc, argv))
return -1;
#if INIT_SCRIPTING_BACKEND
InitializeScriptingBackend();
#endif
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]);
[pool release];
return 0;
}
#include <time.h>
#include <dirent.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#if TARGET_IPHONE_SIMULATOR
extern "C" clock_t clock$UNIX2003() { return clock(); }
extern "C" void closedir$UNIX2003(DIR *dirp) { closedir(dirp); }
extern "C" FILE* fdopen$UNIX2003(int fildes, const char* mode) { return fdopen(fildes, mode); }
extern "C" FILE* fopen$UNIX2003(const char* path, const char* mode) { return fopen(path, mode); }
extern "C" int fputs$UNIX2003(const char* s, FILE* stream) { return fputs(s, stream); }
extern "C" size_t fwrite$UNIX2003(const void* ptr, size_t size, size_t nitems, FILE* stream) { return fwrite(ptr, size, nitems, stream); }
extern "C" time_t mktime$UNIX2003(tm* timeptr) { return mktime(timeptr); }
extern "C" int nanosleep$UNIX2003(const timespec* rqtp, timespec* rmtp) { return nanosleep(rqtp, rmtp); }
extern "C" DIR* opendir$INODE64$UNIX2003(const char* dirname) { return opendir(dirname); }
extern "C" dirent* readdir$INODE64(DIR* dirp) { return readdir(dirp); }
extern "C" ssize_t recv$UNIX2003(int socket, void* buffer, size_t length, int flags) { return recv(socket, buffer, length, flags); }
extern "C" ssize_t send$UNIX2003(int socket, const void *buffer, size_t length, int flags) { return send(socket, buffer, length, flags); }
extern "C" int setenv$UNIX2003(const char* envname, const char* envval, int overwrite) { return setenv(envname, envval, overwrite); }
extern "C" int sigaltstack$UNIX2003(const stack_t* ss, stack_t* oss) { return sigaltstack(ss, oss); }
extern "C" unsigned sleep$UNIX2003(unsigned seconds) { return sleep(seconds); }
extern "C" char *strerror$UNIX2003(int errnum) { return strerror(errnum); }
extern "C" size_t strftime$UNIX2003(char* s, size_t maxsize, const char* format, const tm* timeptr) { return strftime(s, maxsize, format, timeptr); }
extern "C" int system$UNIX2003(const char* command) { return system(command); }
extern "C" int unsetenv$UNIX2003(const char* name) { return unsetenv(name); }
extern "C" pid_t waitpid$UNIX2003(pid_t pid, int *stat_loc, int options) { return waitpid(pid, stat_loc, options); }
#endif // TARGET_IPHONE_SIMULATOR
- 在Build Phases新建運(yùn)行腳本語句Run Script
rm -rf "$TARGET_BUILD_DIR/$PRODUCT_NAME.app/Data"
cp -Rf "$PROJECT_DIR/Data" "$TARGET_BUILD_DIR/$PRODUCT_NAME.app/Data"
- 在Build settings中設(shè)置Header Search Paths & Library Search Paths (具體路徑視Unity項(xiàng)目路徑有所不同)
// Header Search Paths
// non-recursive
$(SRCROOT)
$(SRCROOT)/Classes
$(SRCROOT)/Classes/Native
$(SRCROOT)/Libraries/bdwgc/include
$(SRCROOT)/Libraries/libil2cpp/include
// Library Search Paths
// non-recursive
$(inherited)
$(SRCROOT)
$(SRCROOT)/Libraries
- 在Build Settings中設(shè)置Other C Flags
-mno-thumb
-DINIT_SCRIPTING_BACKEND=1
- 在Build Settings中設(shè)置C Language Dialect
C99[-std=c99]
-
在Build Phases中導(dǎo)入以下庫（這里具體請查看導(dǎo)出的ios工程里面的庫篙骡，千萬不要重復(fù)導(dǎo)入;注意有的庫的Status需要設(shè)置為Optional，避免在低版本中奔潰！）
- 在Build Phases中將Unity項(xiàng)目中所有.mm文件（除了CameraCapture.mm,MetalHelper.mm,DisplayManager.mm文件以外）打上MRC標(biāo)簽
// 設(shè)置Compiler Flags如下：
-fno-objc-arc
參考：
iOS原生工程接入Unity導(dǎo)出的Xcode工程
unity導(dǎo)出工程導(dǎo)入到iOS原生工程中詳細(xì)步驟
史上最全unity與xcode集成教程
unity3D與iOS原生工程項(xiàng)目合并以及合并過程中的問題
