Question

Unity在Android和iOS中如何调用Native API

Answer 1

首先unity支持在C#中调用C++ dll，这样可以在Android和iOS中提供C++接口在unity中调用。利用这一特性，可以扩展unity的功能。例如集成和调用第三方库。同时为了满足对unity接口的一致性，可以考虑在android和iOS上提供相同的接口供C#调用。这里列举以下两个例子。本例对应的接口声明如下：public class CallNativeAPI { #if UNITY_EDITOR public static void OpenWebView(string url) { return; } public static void SumNum(int v1, int v2) { TestUnityEditor.SumNum(v1, v2); return; } #elif UNITY_IPHONE [DllImport ("__Internal")] public static extern void OpenWebView(string url); [DllImport ("__Internal")] public static extern void SumNum(int v1, int v2); #elif UNITY_ANDROID [DllImport ("libtestunity", CallingConvention = CallingConvention.Cdecl)] public static extern void OpenWebView(string url); [DllImport ("libtestunity", CallingConvention = CallingConvention.Cdecl)] public static extern void SumNum(int v1, int v2); #endif public static void SumNumForResult(int v1, int v2, CallbackManager.ResultCallback callback) { TestCallbackManager.sumNumCallback.SetResultCallBack(new CallbackManager.ResultCallback(callback)); SumNum(v1, v2); return; } } namespace CallbackManager { public delegate void ResultCallback(int result); public class SumNumManager{ public SumNumManager() { } private ResultCallback resultCallback; public void SetResultCallBack(ResultCallback callback) { resultCallback = callback; } public void SendResult(int result) { resultCallback(result); } } } public class TestCallbackManager { public static CallbackManager.SumNumManager sumNumCallback = new CallbackManager.SumNumManager(); }