iOS 项目中使用Unity (交互)

上篇博客我说了集成,这里我说一下交互
一、Unity 使用
直接上代码

AppDelegate.h

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

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

@property (strong, nonatomic) UIWindow *window;
@property (nonatomic, strong) UIButton *showUnityOffButton;
@property (nonatomic, strong) UIButton *btnSendMsg;
@property (nonatomic, strong) UINavigationController *navVC;
@property (nonatomic, strong) UIButton *unloadBtn;
@property (nonatomic,strong) NSDictionary * appLaunchOpts;
@property UnityFramework* ufw;
- (void)initUnity;
- (void)ShowMainView;

- (void)didFinishLaunching:(NSNotification*)notification;
- (void)didBecomeActive:(NSNotification*)notification;
- (void)willResignActive:(NSNotification*)notification;
- (void)didEnterBackground:(NSNotification*)notification;
- (void)willEnterForeground:(NSNotification*)notification;
- (void)willTerminate:(NSNotification*)notification;
- (void)unityDidUnloaded:(NSNotification*)notification;

@end

Appdelegate.m

#import "AppDelegate.h"
#import "INUnityDefault.h"



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];
    }
    return ufw;
}

void showAlert(NSString* title, NSString* msg) {
    UIAlertController* alert = [UIAlertController alertControllerWithTitle:title message:msg                                                         preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault
                                                          handler:^(UIAlertAction * action) {}];
    [alert addAction:defaultAction];
    AppDelegate * delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    [delegate.window.rootViewController presentViewController:alert animated:YES completion:nil];
}

@implementation AppDelegate

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

- (void)ShowMainView
{
    if(![self unityIsInitialized]) {
        showAlert(@"Unity is not initialized", @"Initialize Unity first");
    } else {
        [[self ufw] showUnityWindow];
    }
}

- (void)showHostMainWindow
{
    [self showHostMainWindow:@""];
}

- (void)showHostMainWindow:(NSString*)color
{
    [self.window makeKeyAndVisible];
}

- (void)sendMsgToUnity{
    [[self ufw] sendMessageToGOWithName: "Scene" functionName: "turnRight" message: "3"];
}


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//    hostDelegate = self;
    self.appLaunchOpts = launchOptions;
    
    self.window = [[UIWindow alloc] initWithFrame: [UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
    INLoginViewController * root = [[INLoginViewController alloc] init];
    UINavigationController * nav = [[UINavigationController alloc] initWithRootViewController:root];
    self.window.rootViewController = nav;
    [self.window makeKeyAndVisible];
    
    return YES;
}
/// 打开Unity
- (void)initUnity
{
    if([self unityIsInitialized]) {
        showAlert(@"Unity already initialized", @"Unload Unity first");
        return;
    }
    
    [self setUfw: UnityFrameworkLoad()];
    // Set UnityFramework target for Unity-iPhone/Data folder to make Data part of a UnityFramework.framework and uncomment call to setDataBundleId
    // ODR is not supported in this case, ( if you need embedded and ODR you need to copy data )
    [[self ufw] setDataBundleId: "com.unity3d.framework"];
    [[self ufw] registerFrameworkListener: self];
    [NSClassFromString(@"FrameworkLibAPI") registerAPIforNativeCalls:self];
    
    [[self ufw] runEmbeddedWithArgc: [INUnityDefault shareUnity].gArgc argv: [INUnityDefault shareUnity].gArgv appLaunchOpts: self.appLaunchOpts];
    
    UIView * view = [[[self ufw] appController] rootView];
}
/// 退出Unity
- (void)unloadButtonTouched:(UIButton *)sender
{
    if(![self unityIsInitialized]) {
        showAlert(@"Unity is not initialized", @"Initialize Unity first");
    } else {
        [UnityFrameworkLoad() unloadApplication];
    }
}
/// 退出Unity
- (void)unityDidUnload:(NSNotification*)notification
{
    NSLog(@"unityDidUnloaded called");
    
    [[self ufw] unregisterFrameworkListener: self];
    [self setUfw: nil];
    [self showHostMainWindow:@""];
}

- (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

main.m

#import <UIKit/UIKit.h>
#import "AppDelegate.h"
#import "INUnityDefault.h"

int main(int argc, char * argv[]) {
    NSString * appDelegateClassName;
    @autoreleasepool {
        // Setup code that might create autoreleased objects goes here.
        appDelegateClassName = NSStringFromClass([AppDelegate class]);
    }
    ///记录 argc argv 参数 在appdelegate 中使用
    [INUnityDefault shareUnity].gArgc = argc;
    [INUnityDefault shareUnity].gArgv = argv;
    return UIApplicationMain(argc, argv, nil, appDelegateClassName);
}

二、原生向Unity发消息

[[self ufw] sendMessageToGOWithName: "Scene" functionName: "turnRight" message: "3"];

scene 是与Unity 同学约定好的参数
turnRight 是调用 Unity项目的某个方法
3 是要给该方法中传的参数，当有多个参数时建议传json串

三、Unity调用原生方法
这时候就要用到 NativeCallProxy.h桥接文件了

NativeCallProxy.h

#import <Foundation/Foundation.h>

// NativeCallsProtocol defines protocol with methods you want to be called from managed
@protocol NativeCallsProtocol
@required
/**
 将要调用的Unity中的方法 该代理方法应该在Appdelegate 文件中实现
 当然也可以在该代理中 添加其他方法
 */
- (void) showHostMainWindow:(NSString*)color;
// other methods
@end

__attribute__ ((visibility("default")))
@interface FrameworkLibAPI : NSObject
// call it any time after UnityFrameworkLoad to set object implementing NativeCallsProtocol methods
+(void) registerAPIforNativeCalls:(id<NativeCallsProtocol>) aApi;

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" {
    /**
     在这里实现代理中的所有方法
     */
    void showHostMainWindow(const char* color) { return [api showHostMainWindow:[NSString stringWithUTF8String:color]]; }
}

这样就可以相互调用了

我是磊怀 2849765859 QQ 如有疑问我们一起探讨