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Unity与ios交互之界面跳转

发表于2017-07-06
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本篇文章给大家介绍的是Unity与iOS交互,主要涉及的是两个界面之间的跳转。

如果对iOS和Unity交互传参方法不熟悉的朋友,可以参考我的另一篇文章
之参数传递

一.程序启动入口.

  • main.mm
    了解OC或者C的朋友一定知道main方法,这是整个程序的入口.以下是Unity转iOS工程后的main文件中的部分代码.

    const char* AppControllerClassName = "UnityAppController"; int main(int argc, char* argv[])
{ @autoreleasepool {
      UnityInitTrampoline();
      UnityParseCommandLine(argc, argv);
      RegisterMonoModules(); NSLog(@"-> registered mono modules %p\n", &constsection);
      RegisterFeatures();
      std::signal(SIGPIPE, SIG_IGN); // 程序启动入口 UIApplicationMain(argc, argv, nil, [NSString stringWithUTF8String:AppControllerClassName]);
  } return 0;
  }

    根据代码得知,程序需要创建UnityAppController对象.那么,程序就来到了UnityAppController文件.
    在UnityAppController.mm文件中的以下方法中添加打印:NSLog(@"%s",__func__);

    - (id)init
- (void)startUnity:(UIApplication*)application
- (BOOL)application:(UIApplication*)application willFinishLaunchingWithOptions:(NSDictionary*)launchOptions
- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions
- (void)applicationDidBecomeActive:(UIApplication*)application

    打印结果为:

    2017-05-24 04:50:09.597338 0800 ProductName[5622:1888712] [DYMTLInitPlatform] platform initialization successful
2017-05-24 04:50:09.693476 0800 ProductName[5622:1888655] -> registered mono modules 0x100df3fa0
2017-05-24 04:50:09.714814 0800 ProductName[5622:1888655](标记) -[UnityAppController init]
2017-05-24 04:50:09.930542 0800 ProductName[5622:1888655] -[UnityAppController application:willFinishLaunchingWithOptions:]
2017-05-24 04:50:09.931002 0800 ProductName[5622:1888655](标记) -[UnityAppController application:didFinishLaunchingWithOptions:]
-> applicationDidFinishLaunching()
2017-05-24 04:50:10.013760 0800 ProductName[5622:1888655] Metal GPU Frame Capture Enabled
2017-05-24 04:50:10.014789 0800 ProductName[5622:1888655] Metal API Validation Enabled
2017-05-24 04:50:10.178127 0800 ProductName[5622:1888655](标记) -[UnityAppController applicationDidBecomeActive:]
-> applicationDidBecomeActive()
2017-05-24 04:50:10.190176 0800 ProductName[5622:1888655](标记) -[UnityAppController startUnity:]
Init: screen size 640x1136
Initializing Metal device caps: Apple A7 GPU
Initialize engine version: 5.3.5f1 (960ebf59018a)
UnloadTime: 2.714958 ms
Setting up 1 worker threads for Enlighten.
Thread -> id: 16ea3b000 -> priority: 1

    根据带(标记)的打印结果得知
    1.程序会先调用- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions方法,进行Unity界面初始化并布局UI.
    2.准备激活Unity,已激活程序则调用- (void)applicationDidBecomeActive:(UIApplication*)application方法,方法中设置了UnityPause(0);表示Unity为启动状态,在方法最后,执行[self performSelector:@selector(startUnity:) withObject:application afterDelay:0];.
    3.调用- (void)startUnity:(UIApplication*)application方法,展示Unity界面.

二.Unity跳转iOS界面.

  • 程序启动为Unity界面,通过点击跳转iOS按钮,调用unityToIOS方法创建iOS界面并将iOS创建的控制器设置为窗口的跟控制器.以实现跳转iOS界面.
    .cs代码

    using UnityEngine; using System.Collections; using System.Runtime.InteropServices; using SClassLibrary; public class Test : MonoBehaviour { public GameObject cube; // DllImport这个方法相当于是告诉Unity，有一个unityToIOS函数在外部会实现。 // 使用这个方法必须要导入System.Runtime.InteropServices; [DllImport("__Internal")] private static extern void unityToIOS(string str); // 向右转函数接口 public void turnRight(string num) { float f; if (float.TryParse(num, out f))
      {// 将string转换为float，IOS传递数据只能用以string类型 Vector3 r = new Vector3(cube.transform.rotation.x, cube.transform.rotation.y   f, cube.transform.rotation.z);
          cube.transform.Rotate(r);
      }
  } // 向左转函数接口 public void turnLeft(string num) { float f; if (float.TryParse(num, out f))
      {// 将string转换为float，IOS传递数据只能用以string类型 Vector3 r = new Vector3(cube.transform.rotation.x, cube.transform.rotation.y - f, cube.transform.rotation.z);
          cube.transform.Rotate(r);
      }
  } public void DllTest() { var user = new User
      {
          Id = 1,
          Name = "张三" }; #if UNITY_IPHONE && !UNITY_EDITOR unityToIOS(user.ToString()); #else Debug.Log(user.ToString()); #endif }
}
  • 添加属性,该属性用来保存创建的iOS控制器(尽量设置为私有属性) 
    @interface UnityAppController () @property (nonatomic, strong) UIViewController *vc; @end
  • Unity会调用unityToIOS方法,跳转iOS界面之前,先暂停Unity,即UnityPause(true);方法.因为在C语言中,不能直接使用self调用对象方法.所以需要通过GetAppController()调用setupIOS方法.GetAppController()即UnityAppController类型的对象.在setupIOS方法中,让
    UnityAppController对象持有vc后,再将vc直接设置为窗口的跟控制器GetAppController().window.rootViewController = GetAppController().vc;

  • unityToIOS方法

    // 跳转iOS界面 extern "C" void unityToIOS(char *str) { // Unity传递过来的参数 NSLog(@"%s",str);
   UnityPause(true); // GetAppController()获取appController，相当于self // 设置iOS界面,GetAppController()获取appController，相当于self [GetAppController() setupIOS]; // 点击按钮后跳转到IOS界面,设置窗口的跟控制器为iOS的控制 GetAppController().window.rootViewController = GetAppController().vc;
}

  • setupIOS 方法

    // 设置iOS界面 - (void)setupIOS
{ UIViewController *vc = [[UIViewController alloc] init];
  vc.view.backgroundColor = [UIColor greenColor];
  vc.view.frame = [UIScreen mainScreen].bounds; UIButton *btn = [[UIButton alloc]initWithFrame:CGRectMake(70, 530, 180, 30)];
  btn.backgroundColor = [UIColor whiteColor];
  [btn setTitle:@"跳转到Unity界面" forState:UIControlStateNormal];
  [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  [btn addTarget:self action:@selector(setupUnity) forControlEvents:UIControlEventTouchUpInside];
  [vc.view addSubview:btn]; self.vc = vc; NSLog(@"设置界面为IOS界面"); self.window.rootViewController = vc;
}

    说明:
    1.GetAppController()
    跳转到GetAppController()方法内部,实现如下,可以看出,该方法获取到UIApplication的单例类,而它的代理,则为UnityAppController对象,最后再使用(UnityAppController*)进行强制转换.所以,在UnityAppController.mm文件中使用GetAppController()相当于self.

    inline UnityAppController *GetAppController() { return (UnityAppController*)[UIApplication sharedApplication].delegate;
}

    2.UnityGetGLViewController()
    返回Unity的根控制器,根控制器上的视图是Unity的视图.,如果将窗口的根控制器设置为UnityGetGLViewController(),其实就是将Unity界面显示在手机上.

    extern "C" UIViewController *UnityGetGLViewController() { return GetAppController().rootViewController; 
}

    3.UnityGetGLView()
    返回Unity视图,这个视图其实就是显示在UnityGetGLViewController()上的.

    extern "C" UIView *UnityGetGLView() { return GetAppController().unityView; 
}

三.iOS跳转Unity界面.

  • 实现iOS界面中的按钮的方法.来跳转到Unity界面.self.rootViewController的作用相当于GetAppController().rootViewController,然后设置window的rootViewController为Unity的跟控制器

  • setupUnity 方法

    // 设置Unity界面 - (void)setupUnity
{ // 设置Unity状态为开启状态 UnityPause(false); // 设置rootViewController为Unity的跟控制器 self.window.rootViewController = self.rootViewController; // 等同于 // self.window.rootViewController = UnityGetGLViewController(); NSLog(@"设置rootView为Unity界面");
}

四.封装界面跳转代码.

  • 查看UnityAppController.mm文件,发现其中代码太多,为了减少代码以及便于我们管理和维护,我们要创建一个单例类来管理Unity和iOS界面互相跳转的操作.之前在UnityAppController.mm文件中写的代码全部删除.
    1.需要创建一个自定义类,如:BYJumpEachOther,继承至NSObject.
    2.添加属性

    // 存储的iOS控制器 @property (nonatomic, strong) UIViewController *vc;

    3.入口:unityToIOS,与之前不同的是,调用setupIOS方法,改为单例对象去调用[[BYJumpEachOther sharedInstance] setupIOS];获取vc也通过单例对象去获取.

    // 跳转iOS界面 extern "C" void unityToIOS(char *str) { // Unity传递过来的参数 NSLog(@"%s",str); // 跳转到IOS界面,Unity界面暂停 UnityPause(true); // GetAppController()获取UnityAppController对象 // UnityGetGLView()获取UnityView对象,相当于_window [[BYJumpEachOther sharedInstance] setupIOS]; // 点击按钮后跳转到IOS界面,设置界面为IOS界面 GetAppController().window.rootViewController = [BYJumpEachOther sharedInstance].vc;
}

    4.添加BYJumpEachOther创建单例的方法

     (instancetype)sharedInstance
{  static BYJumpEachOther *instance;  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{  instance = [[BYJumpEachOther alloc] init];
  });  return instance;
}

    5.跳转iOS界面代码

    // 设置iOS界面 - (void)setupIOS
{ UIViewController *vc = [[UIViewController alloc] init];
  vc.view.backgroundColor = [UIColor greenColor];
  vc.view.frame = [UIScreen mainScreen].bounds; UIButton *btn = [[UIButton alloc]initWithFrame:CGRectMake(70, 530, 180, 30)];
  btn.backgroundColor = [UIColor whiteColor];
  [btn setTitle:@"跳转到Unity界面" forState:UIControlStateNormal];
  [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  [btn addTarget:self action:@selector(setupUnity) forControlEvents:UIControlEventTouchUpInside];
  [vc.view addSubview:btn]; self.vc = vc; NSLog(@"设置界面为IOS界面");
  GetAppController().window.rootViewController = vc;
}

    6.跳转Unity界面代码

    // 设置Unity界面 - (void)setupUnity
{
  UnityPause(false);
  GetAppController().window.rootViewController = UnityGetGLViewController(); // 等同于 // GetAppController().window.rootViewController = GetAppController().rootViewController; NSLog(@"设置rootView为Unity界面");
}

CSDN

之界面跳转

个人博客

之界面跳转

GitHub

iOS和Unity界面交互Demo(未封装版)
iOS和Unity界面交互Demo(封装版)

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