Unity调用Android
1.Unity调用Android
根据unity用户手册,unity可以采用native code(c/c++),但是也提供了C#调用方法,本文对此进行简单讲解。
通过下述方法即可获取包com.ii.intentreceiver(可类比于C#命名空间)下的类MainActivity。继而可以调用MainActivity的静态方法getIntentResult。其返回值为string,如果无返回值,则直接调用CallStatic即可。
using (AndroidJavaClass mainActivityClass = new AndroidJavaClass("com.ii.intentreceiver.MainActivity"))
{
Debug.Log("IntentReceiver start catch infomation");
try
{
result = mainActivityClass.CallStatic<string>("getIntentResult");
}
catch(Exception ex)
{
Debug.Log("IntentReceiver get result failed:" + ex.Message);
}
}
通过下述方法即可获取包com.ii.intentreceiver(可类比于C#命名空间)下的类MainActivity的一个实例。继而可以调用MainActivity的方法getResult。其返回值为Android定义的一个实例,所以返回值为AndroidJavaObject类型,如果无返回值,则直接调用Call即可。
try
{
using (AndroidJavaObject main = new AndroidJavaObject("com.ii.intentreceiver.MainActivity",null))
{
intentJavaObject = main.Get<AndroidJavaObject>("getResult");
}
}
catch(AndroidJavaException ex)
{
Debug.Log("Exception while connecting to the Activity:" + ex.ToString());
return null;
}
即可获取unity的currentActivity
private static string unityPlayerClass = "com.unity3d.player.UnityPlayer";
public static AndroidJavaObject GetActivity()
{
AndroidJavaClass jc = new AndroidJavaClass(unityPlayerClass);
if (jc == null)
{
Debug.LogErrorFormat("Failed to get Unity Player class, {0}", unityPlayerClass);
return null;
}
AndroidJavaObject activity = jc.GetStatic<AndroidJavaObject>("currentActivity");
if (activity == null)
{
Debug.LogError("Failed to obtain Android Activity from Unity Player class.");
return null;
}
return activity;
}
此处Android端通过接口来实现的回调
package com.ii.Manager;
public class PluginCallback {
public interface ResultCallback {
public void OnSuccess(String result, String hint);
public void OnError(String result, int errorCode);
}
}
Android层方法:
package com.ii.Manager;
public class Method {
public void Execute(PluginCallback.ResultCallback callback){。。。}
}
接受回调的类:
此类要继承AndroidJavaProxy,同时根据原Android中的接口定义两个同名的方法。
public delegate void SuccessHandler(string result, string hint);
public delegate void ErrorHandler(string result, int errorCode);
class ExecuteCallback : AndroidJavaProxy
{
SuccessHandler successHandler;
ErrorHandler errorHandler;
public InstallApkCallback(SuccessHandler successCallback,
ErrorHandler errorCallback)
: base("com.ii.Manager.PluginCallback$ResultCallback")
{
successHandler = successCallback;
errorHandler = errorCallback;
}
public void OnSuccess(string result, string hint)
{
if (successHandler != null)
successHandler(result, hint);
}
public void OnError(string result, int errorCode)
{
if (errorHandler != null)
errorHandler(result, errorCode);
}
}
在new ExecuteCallback(null,null)处填入回调方法。
AndroidJavaObject jo = new AndroidJavaObject("package com.ii.Manager.Method");
jo.Call("Execute",new ExecuteCallback(null,null));