Unity3D内嵌iOS

前言

前段时间需要用Unity3D做AR开发展示嵌入的iOS和android中，在过程中碰到了一些问题，现在分享给大家。

准备工作

Unity版本用的是

:Users:sunyujian:Library:Application Support:typora-user-images:image-20221101163609242.png

版本升高之后，在app调试时会crash，无法进行调试，不知道具体的原因是什么，但app release之后是可以使用的。

导入依赖文件

在Unity文件中导入NativeCallProxy的依赖文件。

// NativeCallProxy.h
#import <Foundation/Foundation.h>
@protocol NativeCallsProtocol

@required

- (void)iOSLog:(NSString *)value;

- (void)backToIOS;

@end

__attribute__ ((visibility("default")))

@interface FrameworkLibAPI: NSObject
+(void)registerAPIforNativeCalls:(id<NativeCallsProtocol>) aApi;

@end

NativeCallProxy.mm文件

// NativeCallProxy.mm
#import <Foundation/Foundation.h>
#import "NativeCallProxy.h"

@implementation FrameworkLibAPI
id<NativeCallsProtocol> api = NULL;
+(void)registerAPIforNativeCalls: (id<NativeCallsProtocol>) aApi
{
 api = aApi;
}
@end

extern "C" {
 void iOSLog(const char * value);
}

void iOSLog(const char * value) {
 return [api iOSLog:[NSString stringWithUTF8String: value]];
}

extern "C" {
 void backToIOS(const char * value);
}

void backToIOS(const char* value) {
 return [api backToIOS];
}

这两个文件导入到Unity3D原文件中，如图所示，放入iOS文件夹下。

image-20221101165709308.png

Unity3D的脚本文件代码如下：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

using System.Runtime.InteropServices;

public class Jiaoben : MonoBehaviour {

 [DllImport("__Internal")]
 private static extern void iOSLog(string name);

 [DllImport("__Internal")]
 private static extern void backToIOS();
 // Unity调用iOS的两个方法，一个是打印log另一个是返回按钮
 void Start() {
   Debug.Log("脚本开始运行");
 }

 // Update is called once per frame
 void Update()
 {

 }
 // iOS调用Unity的方法。
 public void sendArMessage(string msg) {
   Debug.Log("从iOS接收到的消息：", msg);
   }
}

导入iOS工程

将导出的文件拖入到iOS工程中。

image-20221101163857009.png

选中Unity-iPhone中的Data文件，并选中UnityFramework如下图

image-20221101164127269.png

然后选中UnityFramework目标，并点击build按钮进行build。更新UnityFramework文件，如下图。

image-20221101164314307.png

build完成后，选中你的主项目，找到General中的Frameworks,Libraries,and Embedded Content。

image-20221101165048556.png

点击+，在弹出的搜索框中选中UnityFramework.framework，Embed的状态无需改变

:Users:sunyujian:Library:Application Support:typora-user-images:image-20221101165127123.png

最终状态

image-20221101165149961.png

iOS端开发

接下来我们对iOS端的AppDelegate文件进行修改

// AppDelegate.h
#import <UIKit/UIKit.h>
#include <UnityFramework/UnityFramework.h>
#import <UnityFramework/NativeCallProxy.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate,UnityFrameworkListener, NativeCallsProtocol>

@property (strong, nonatomic) UIWindow * window;

@property (strong, nonatomic) UnityFramework *ufw;

- (void)showUnityView;

- (void)showNativeView;

- (void)sendMessageWithName:(const char*)goName functionName:(const char*) functionName message:(const char*)msg;

@end

AppDelegate.m

#import "AppDelegate.h"
#import "QHJSBaseWebLoader.h"

/* 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];
 }

 [ufw setDataBundleId:"com.unity3d.framework"];  /////////add this code
 return ufw;
}

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 // Override point for customization after application launch.

 [self initUnity];

 self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

 QHJSBaseWebLoader *rootVc = [[QHJSBaseWebLoader alloc]init];
 UINavigationController *rootNav = [[UINavigationController alloc]initWithRootViewController:rootVc];
 [rootNav setNavigationBarHidden:YES];
 [self.window setRootViewController:rootNav];
 [self.window makeKeyAndVisible];

 return YES;
}

// 打印方法
-(void)iOSLog:(NSString *)value{

 NSLog(@"%@", [NSString stringWithFormat:@"Unity 掉用iOS打印出 ：%@",value]);
}

// 返回按钮
-(void)backToIOS {
 [self showNativeView];
}

- (UIViewController *) rootViewController {
 return [[self ufw] appController].rootViewController;
}

#pragma mark - Unity

- (BOOL)unityIsInitialized
{
 return [self ufw] && [[self ufw] appController];
}

- (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];

}

- (void)showUnityView {
 if (![self unityIsInitialized]){
 NSLog(@"Unity 还未初始化");
 }
 [self.ufw showUnityWindow];
}

- (void)showNativeView {
 [self.window makeKeyAndVisible];
}

- (void)sendMessageWithName:(const char*)goName functionName:(const char*) functionName message:(const char*)msg{
 [self.ufw sendMessageToGOWithName:goName functionName:functionName message:msg];
}

#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];
}

@end

调用方法

AppDelegate *appDelegate = (AppDelegate *)([UIApplication sharedApplication].delegate);
[appDelegate showUnityView];
[appDelegate sendMessageWithName:[@"AR Session Origin" UTF8String] functionName:[@"sendArMessage" UTF8String] message:[message.body UTF8String]];

通过这个调用方法就可以打开新的Unity的页面。