Get applicationContext from Unity 3d

本文关键字：3d Unity from applicationContext Get | 更新日期: 2023-09-27 18:20:16

我正在为unity 3d编写一个android插件，我的问题是初始化我需要将applicationContext传递给一个方法。所以我的MyPlugin.cs在下面

using UnityEngine;
using System.Collections;
public class MyPlugin : MonoBehaviour {
void Awake () {
    Debug.Log ("awake");
    Initialize ();
}
public static void Initialize()
{
    AndroidJavaClass playerClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    AndroidJavaObject activity = playerClass.GetStatic<AndroidJavaObject>("currentActivity");
    AndroidJavaClass pluginClass = new AndroidJavaClass("com.mycompany.product.UnityPlugin");
    pluginClass.CallStatic("initialize", new object[1] {activity});
}
}

在android UnityPlugin.java类中，我有

public class UnityPlugin extends Plugin {
    static public void initialize (Activity unityActivity){
        try {
           MyApp.initialize(unityActivity.getApplicationContext());
        } catch (NullPointerException e){
           Log.d("unity", "null pointer exception");
        }
    }
}

并且我一直得到CCD_ 3。从团结活动中获得AppilcationContext的正确方法是什么？

Get applicationContext from Unity 3d

首先，检查pluginClass是否为空

if(pluginClass == null) Debug.Log("plugin class is null");

如果是，请确保您正在创建具有正确字符串参数的新AndroidJavaClass。

接下来，我不知道为什么要传递一个Activity的数组，而不是只传递Unity的上下文。试试这样的东西：

AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
AndroidJavaObject context = activity.Call<AndroidJavaObject>("getApplicationContext");
pluginClass.CallStatic("initialize", context);

您还需要以以下方式更改插件端：

public class UnityPlugin extends Plugin {
    static public void initialize (Context unityContext){
        try {
            MyApp.initialize(unityContext);
        } catch (NullPointerException e){
            Log.d("UnityPlugin", "Null PTR Exception");
            e.printStackTrace();
        }
    }
}
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