技術標籤：Iosunityios互動

title: unity-與ios互動
categories: Unity3d
tags: [unity, ios]
date: 2021-01-31 14:16:54
comments: false
mathjax: true
toc: true

unity-與ios互動

unity 與 ios 互動

1. 寫 ios 外掛, 丟到平臺層目錄 Assets/Plugins/iOS 下

   • 標頭檔案 iOSBridgePlugin.h

     // ----------------------------------------
     // --- ios 自定義外掛介面宣告
      
     
     // ----------------------------------------
     
     #ifdef __cplusplus
     extern "C"{
     #endif
     
     void ShowTips(const char* goName, const char* callFnName, const char* msg);
     
     #ifdef __cplusplus
     } // extern "C"
     #endif
     
     
     

   • 實現檔案 iOSBridgePlugin.mm.

     這個是混編檔案 (oc + c/c++) , xcode 可以自動識別為 Objective-C++ 檔案

     #import "iOSBridgePlugin.h"
     #import "Classes/Unity/UnityInterface.h" // 引入 unity 相關 api
     
     void ShowTips(const char* goName, const char* callFnName, const char* msg) {
         NSLog(@"--- ShowTips");
         NSString* go = [NSString stringWithUTF8String:goName]; // c 字串 轉成 oc 字串, 這裡一定要先轉成 oc, 不然 const char* 呼叫後就會釋放掉棧記憶體, 會導致 UnitySendMessage 回傳 unity 失敗
      
     
         NSString* fn = [NSString stringWithUTF8String:callFnName];
         NSString* content = [NSString stringWithUTF8String:msg]; 
         UIAlertController * alert = [UIAlertController
                                      alertControllerWithTitle:@"Hi, wilker."
                                      message:content
                                      preferredStyle:UIAlertControllerStyleAlert];
         
         UIAlertAction* yesButton = [UIAlertAction
                                     actionWithTitle:@"Reply"
                                     style:UIAlertActionStyleDefault
                                     handler:^(UIAlertAction * action) {
             const char* rspMsg = [[NSString stringWithFormat: @"ios replay: %@", content] UTF8String]; // oc 字串 轉成 c 字串
             UnitySendMessage([go UTF8String], [fn UTF8String], rspMsg); // ios 呼叫 unity
         }];
         
         [alert addAction:yesButton];
     
         UIViewController* rootCtrl=[UIApplication sharedApplication].keyWindow.rootViewController;
         [rootCtrl presentViewController:alert animated:YES completion:nil];
     }
     

2. 在 csharp 程式碼匯入並使用這個外掛 api

   GameMgr.cs

   using System.Collections;
   using System.Collections.Generic;
   using System.Runtime.InteropServices;
   using UnityEngine;
   using UnityEngine.UI;
   
   public class GameMgr : MonoBehaviour {
       public Text txt;
       public GameObject go; 
   
       void Start() {
           gameObject.name = "GameMgr";
           DontDestroyOnLoad(gameObject);
       }
   
       public void OnNativeCall(string data) {
           Debug.LogFormat("--- OnNativeCall, data: {0}", data);
           txt.text = data;
       }
   
       public void CallNative() {
           string msg = "hello ios-" + Random.Range(1000, 9999);
   #if UNITY_IPHONE || UNITY_IOS
           ShowTips(gameObject.name, "OnNativeCall", msg); // 呼叫 ios api      
   #else
           Debug.LogErrorFormat("--- no implemention on platform: {0}", Application.platform.ToString());
   #endif
       }
   
       void Update() {
           go.transform.Rotate(Vector3.up * 50 * Time.deltaTime);
       }
   
   
       // ------------------- ios native api
   #if UNITY_IPHONE || UNITY_IOS
       [DllImport("__Internal")]
       private static extern void ShowTips(string goName, string callFnName, string msg);
   #endif
   }
   

   目錄目錄

   

3. build 一下生產 xcode 工程

4. 開啟 xcode.

   Plugins 目錄會移到 Libraries 目錄下

   

5. cmd + R 編譯並執行到手機.

   不能執行到 ios 模擬器上, 因為 unity 匯出的是 arm 架構的庫, 而 ios 模擬器時 x86 架構.

   • 效果