Unity和OC交互

APSchmidt · 发表于 2023-2-28 13:08

步骤一：

将.m文件修改为.mm文件，并在其中实现需要调用的方法，然后通过C代码调用已经实现的方法，代码如下：
#import "UKit.h"#import <UIKit/UIKit.h>static UKit * _instance = nil;@implementation UKit+ (UKit *)instance{ static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ _instance = [[UKit alloc] init]; }); return _instance;}- (void)ShowWarningBox:(NSString *)strTitle text:(NSString *)message{ UIAlertController * alertController = [UIAlertController alertControllerWithTitle:strTitle message:message preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction * okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { NSLog(@"点击ok按钮"); UnitySendMessage("Canvas", "OnButtonClick", [@"你好啊Unity" UTF8String]); }]; [alertController addAction:okAction]; UIAlertAction * cancleAction = [UIAlertAction actionWithTitle:@"cancle" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { NSLog(@"点击了取消按钮"); }]; [alertController addAction:cancleAction]; UIViewController * viewController = [[[UIApplication sharedApplication] keyWindow] rootViewController]; [viewController presentViewController:alertController animated:YES completion:^{ NSLog(@"显示了对话框"); }];}extern "C" { void ShowWarningBox(char *strTitle, char *message) { [[UKit instance] ShowWarningBox:[NSString stringWithUTF8String:strTitle] text:[NSString stringWithUTF8String:message]]; } void CallOC(int val1, float val2, bool val3, const char *val4) { NSLog(@"Object-c Called. val1=%d, val2=%f, val3=%d, val4=%s", val1, val2, val3, val4); NSString * title = @"标题"; NSString * message = [NSString stringWithFormat:@"Object-c Called. val1=%d, val2=%f, val3=%d, val4=%s", val1, val2, val3, val4]; [[UKit instance] ShowWarningBox:title text:message]; } // C#函数的函数指针 typedef void (*cs_callback)(int); void CallBack(cs_callback callback) { callback(999); } }@end步骤二：

创建Assets/Plugins/iOS文件夹，并将OC文件拖到该文件夹下；打包后该文件也会包含在工程项目中，如图：

WeChat81ed0cab0d1ceabe481581792de472fc.png

WeChat213a3cf0c54e0a02a8e7b62cb0b9f44a.png

步骤三：

创建C#调用方法的文件，在其中导入OC文件中声明的C方法并进行调用，代码如下：
using UnityEngine;using System.Runtime.InteropServices;using AOT;public static class UnityIOSKit{ delegate void callback_delegate(int val); [DllImport("__Internal")] private static extern void ShowWarningBox(string strTitle, string message); [DllImport("__Internal")] private static extern void CallOC(int val1, float val2, bool val3, string val4); // 声明包含回调方法的方法 [DllImport("__Internal")] private static extern void CallBack(callback_delegate callback); static public void ShowAlert(string strTitle, string strText) { if (Application.platform == RuntimePlatform.IPhonePlayer) { ShowWarningBox("提醒弹框", "弹框内容"); } } static public void myCallOC() { if (Application.platform == RuntimePlatform.IPhonePlayer) { CallOC(1314, 3.1415926f, true, "文字内容"); } } //回调函数，必须MonoPInvokeCallback并且是static [MonoPInvokeCallback(typeof(callback_delegate))] private static void cs_callback(int val) { UnityEngine.Debug.Log("cs_callback : " + val); } static public void CallBack() { if (Application.platform == RuntimePlatform.IPhonePlayer) { //直接把函数传过去 CallBack(cs_callback); } }}
参考：unity 与oc交互

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Unity和OC交互

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