记录UNITY3D与iOS的互相调用，附通用模型

基本交互

标记call函数

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[DllImport ("__Internal")]
private static extern float FooPluginFunction();

使用C来链接被call函数(不使用也可)

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extern "C" {
  float FooPluginFunction();
}
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如果不使用可以直接写在.mm文件的 @implemented  @end 之间

在iOS层 使用 UnitySendMessage 函数给Unity场景发送消息

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UnitySendMessage("GameObjectName1", "MethodName1", "Message to send");
  • 必须有同名的GameObject
  • 方法签名必须要对应上
  • UnitySendMessage函数是异步的，会delay一帧，然后被调用。

插件整合方法

  • .m,.mm,.c,.cpp 格式都被支持，需要至于 Plugins/iOS 文件夹下
  • .h 文件不会在Xcode project tree上显示

UnityGameNotification.h - Plugin 通用

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//
//  NSObject+IAPModule.h
//  Unity-iPhone
//
//  Created by keyle on 11/2/16.
//
//

#import <Foundation/Foundation.h>

@interface IAPModule : NSObject
{
    NSString* status;
    BOOL searching;
}

- (id)init;
- (int)getCount;
- (NSString *)getStatus;
@end


UnityGameNotification.mm - Plugin 通用

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#import "UnityGameNotification.h"

@implementation NetServiceBrowserDelegate : NSObject 
{
    NSString* status;
    BOOL searching;
}
    
- (id)init
{
    self = [super init];
    searching = NO;
	status = @"Initializing";
    return self;
}

- (void)dealloc
{
//    [super dealloc];	
}


- (int)getCount
{
	return 1024;
}

- (NSString *)getStatus
{
	return status;
}

@end

static UnityGameNotification* delegateObject = nil;

// Converts C style string to NSString
NSString* CreateNSString (const char* string)
{
	if (string)
		return [NSString stringWithUTF8String: string];
	else
		return [NSString stringWithUTF8String: ""];
}

// Helper method to create C string copy
char* MakeStringCopy (const char* string)
{
	if (string == NULL)
		return NULL;
	
	char* res = (char*)malloc(strlen(string) + 1);
	strcpy(res, string);
	return res;
}

// When native code plugin is implemented in .mm / .cpp file, then functions
// should be surrounded with extern "C" block to conform C function naming rules
extern "C" {

	void _ExecuteMethodFromiOS (const char* arg1, const char* arg2)
	{
        //do some initialize work
    }
	
	const char* _GetStringFromiOS ()
	{
        return MakeStringCopy([@"have fun" UTF8String]);
	}
	
	int _GetINT ()
	{
		return 1024;
	}
	
	const char* _GetServiceName (int serviceNumber)
	{
		return MakeStringCopy([@"have fun" UTF8String]);
	}
}


参考文档

Building Plugins for iOS