[Unity][Android] 在 Unity 中直接使用 Android 的 Toast 方法

在 Unity 專案中建立 *.cs 檔，插入以下程式碼：

    AndroidJavaClass UnityPlayer;
    AndroidJavaObject currentActivity;
    AndroidJavaObject context;

    string toastString;
 
    void Start ()
    {

        if (Application.platform == RuntimePlatform.Android)
        {
            UnityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
            currentActivity = UnityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
            context = currentActivity.Call<AndroidJavaObject>("getApplicationContext");
        }

        this.toastString = "Hello Unity!";
        currentActivity.Call("runOnUiThread", new AndroidJavaRunnable(showToast));
    }
 
    void showToast()
    {
        AndroidJavaClass Toast = new AndroidJavaClass("android.widget.Toast");
        AndroidJavaObject javaString = new AndroidJavaObject("java.lang.String", toastString);
        AndroidJavaObject toast = Toast.CallStatic<AndroidJavaObject>("makeText", context, javaString, Toast.GetStatic<int>("LENGTH_SHORT"));
        toast.Call("show");
    }