本文介紹了iOS和Unity交互,主要涉及兩個界面之間的跳轉.
如果對iOS和Unity交互傳參方法不熟悉的朋友,可以參考我的另一篇文章
<iOS和Unity交互>之參數傳遞
一.程序啟動入口.
-
main.mm
了解OC或者C的朋友一定知道main方法
,這是整個程序的入口.以下是Unity轉iOS工程后的main文件中的部分代碼.
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);
// 程序啟動入口
UIApplicationMain(argc, argv, nil, [NSString stringWithUTF8String:AppControllerClassName]);
}
return 0;
}
根據代碼得知,程序需要創建UnityAppController對象.那么,程序就來到了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
打印結果為:
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](標記) -[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](標記) -[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](標記) -[UnityAppController applicationDidBecomeActive:]
-> applicationDidBecomeActive()
2017-05-24 04:50:10.190176+0800 ProductName[5622:1888655](標記) -[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
根據帶(標記)
的打印結果得知
1.程序會先調用- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions
方法,進行Unity界面初始化并布局UI.
2.準備激活Unity,已激活程序則調用- (void)applicationDidBecomeActive:(UIApplication*)application
方法,方法中設置了UnityPause(0);
表示Unity為啟動狀態,在方法最后,執行[self performSelector:@selector(startUnity:) withObject:application afterDelay:0];
.
3.調用- (void)startUnity:(UIApplication*)application
方法,展示Unity界面.
二.Unity跳轉iOS界面.
- 程序啟動為Unity界面,通過點擊
跳轉iOS按鈕
,調用unityToIOS
方法創建iOS界面并將iOS創建的控制器設置為窗口的跟控制器.以實現跳轉iOS界面.
.cs代碼
using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;
using SClassLibrary;
public class Test : MonoBehaviour
{
public GameObject cube;
// DllImport這個方法相當于是告訴Unity,有一個unityToIOS函數在外部會實現。
// 使用這個方法必須要導入System.Runtime.InteropServices;
[DllImport("__Internal")]
private static extern void unityToIOS(string str);
// 向右轉函數接口
public void turnRight(string num)
{
float f;
if (float.TryParse(num, out f))
{// 將string轉換為float,IOS傳遞數據只能用以string類型
Vector3 r = new Vector3(cube.transform.rotation.x, cube.transform.rotation.y + f, cube.transform.rotation.z);
cube.transform.Rotate(r);
}
}
// 向左轉函數接口
public void turnLeft(string num)
{
float f;
if (float.TryParse(num, out f))
{// 將string轉換為float,IOS傳遞數據只能用以string類型
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 = "張三"
};
#if UNITY_IPHONE && !UNITY_EDITOR
unityToIOS(user.ToString());
#else
Debug.Log(user.ToString());
#endif
}
}
- 添加屬性,該屬性用來保存創建的iOS控制器(盡量設置為私有屬性)
@interface UnityAppController ()
@property (nonatomic, strong) UIViewController *vc;
@end
- Unity會調用
unityToIOS
方法,跳轉iOS界面之前,先暫停Unity,即UnityPause(true);
方法.因為在C語言中,不能直接使用self調用對象方法.所以需要通過GetAppController()
調用setupIOS
方法.GetAppController()
即UnityAppController類型的對象.在setupIOS
方法中,讓
UnityAppController對象持有vc后,再將vc直接設置為窗口的跟控制器GetAppController().window.rootViewController = GetAppController().vc;
- unityToIOS方法
// 跳轉iOS界面
extern "C" void unityToIOS(char *str)
{
// Unity傳遞過來的參數
NSLog(@"%s",str);
UnityPause(true);
// GetAppController()獲取appController,相當于self
// 設置iOS界面,GetAppController()獲取appController,相當于self
[GetAppController() setupIOS];
// 點擊按鈕后跳轉到IOS界面,設置窗口的跟控制器為iOS的控制
GetAppController().window.rootViewController = GetAppController().vc;
}
- setupIOS 方法
// 設置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:@"跳轉到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(@"設置界面為IOS界面");
self.window.rootViewController = vc;
}
說明:
1.GetAppController()
跳轉到GetAppController()
方法內部,實現如下,可以看出,該方法獲取到UIApplication
的單例類,而它的代理,則為UnityAppController
對象,最后再使用(UnityAppController*)
進行強制轉換.所以,在UnityAppController.mm
文件中使用GetAppController()
相當于self.
inline UnityAppController *GetAppController()
{
return (UnityAppController*)[UIApplication sharedApplication].delegate;
}
2.UnityGetGLViewController()
返回Unity的根控制器
,根控制器上的視圖是Unity的視圖
.,如果將窗口的根控制器
設置為UnityGetGLViewController()
,其實就是將Unity界面
顯示在手機
上.
extern "C" UIViewController *UnityGetGLViewController()
{
return GetAppController().rootViewController;
}
3.UnityGetGLView()
返回Unity視圖,這個視圖其實就是顯示在UnityGetGLViewController()
上的.
extern "C" UIView *UnityGetGLView()
{
return GetAppController().unityView;
}
三.iOS跳轉Unity界面.
- 實現iOS界面中的按鈕的方法.來跳轉到Unity界面.
self.rootViewController
的作用相當于GetAppController().rootViewController
,然后設置window的rootViewController為Unity的跟控制器 - setupUnity 方法
// 設置Unity界面
- (void)setupUnity
{
// 設置Unity狀態為開啟狀態
UnityPause(false);
// 設置rootViewController為Unity的跟控制器
self.window.rootViewController = self.rootViewController;
// 等同于
// self.window.rootViewController = UnityGetGLViewController();
NSLog(@"設置rootView為Unity界面");
}
四.封裝界面跳轉代碼.
- 查看
UnityAppController.mm
文件,發現其中代碼太多,為了減少代碼以及便于我們管理和維護,我們要創建一個單例類來管理Unity和iOS界面互相跳轉的操作.之前在UnityAppController.mm
文件中寫的代碼全部刪除.
1.需要創建一個自定義類,如:BYJumpEachOther
,繼承至NSObject
.
2.添加屬性
// 存儲的iOS控制器
@property (nonatomic, strong) UIViewController *vc;
3.入口:unityToIOS,與之前不同的是,調用setupIOS
方法,改為單例對象去調用[[BYJumpEachOther sharedInstance] setupIOS];
獲取vc也通過單例對象去獲取.
// 跳轉iOS界面
extern "C" void unityToIOS(char *str)
{
// Unity傳遞過來的參數
NSLog(@"%s",str);
// 跳轉到IOS界面,Unity界面暫停
UnityPause(true);
// GetAppController()獲取UnityAppController對象
// UnityGetGLView()獲取UnityView對象,相當于_window
[[BYJumpEachOther sharedInstance] setupIOS];
// 點擊按鈕后跳轉到IOS界面,設置界面為IOS界面
GetAppController().window.rootViewController = [BYJumpEachOther sharedInstance].vc;
}
4.添加BYJumpEachOther創建單例的方法
+ (instancetype)sharedInstance
{
static BYJumpEachOther *instance;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
instance = [[BYJumpEachOther alloc] init];
});
return instance;
}
5.跳轉iOS界面代碼
// 設置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:@"跳轉到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(@"設置界面為IOS界面");
GetAppController().window.rootViewController = vc;
}
6.跳轉Unity界面代碼
// 設置Unity界面
- (void)setupUnity
{
UnityPause(false);
GetAppController().window.rootViewController = UnityGetGLViewController();
// 等同于
// GetAppController().window.rootViewController = GetAppController().rootViewController;
NSLog(@"設置rootView為Unity界面");
}