如何让安装的应用程序列表与Unity3D？ [英] How to get installed apps list with Unity3D?

问题描述

我试图在C＃中使用Unity3D的机器人发射，一切都在地方，除了检测安装的应用程序。

I'm trying to make an android launcher with Unity3D in C#, Everything is in place except detection of installed apps.

我已经尝试了很多不同的东西，但他们都陷在同一个地方，访问 getInstalledApplications 在软件包管理系统

I have tried a lot of different things, but they all get stuck at the same place, accessing getInstalledApplications in the PackageManager.

我觉得我已经成功地复制在C＃中 ApplicationInfo 类，至少变量存储明智的，通过研究Android源，所以我不认为这是一个问题，至少目前还没有...

I think I have managed to replicate the ApplicationInfo class in C#, at least variable storage wise, by studying the android source, so I don't think that's a problem, at least not yet...

简单地说，我需要的URI（或东西我可以用它来打开应用程序），应用程序的名称，该应用程序的图标（或者一个字符串，它的位置，或的Texture2D 本身），我尝试 ApplicationInfo ，因为它拥有一切，然后一些，但如果我必须让他们单独或通过另一种方法，这是完全罚款。

Simply put, I need the URI (or something I can use to open the app), the name of the app, and the icon of the app (either a string to its location, or the Texture2D itself), I try for ApplicationInfo because it has all that and then some, but if I have to get them individually or through another method, that's totally fine.

下面是什么，我现在所做的例子。
这种情况无论我是否使用类或对象。

Here is an example of what I am doing now. This happens regardless of whether I use a Class or an Object.

void Start () {
                AndroidJavaClass pluginClass = new AndroidJavaClass("android.content.pm.PackageManager");

            AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
            AndroidJavaObject currentActivity = jc.GetStatic<AndroidJavaObject>("currentActivity");
        Debug.Log(currentActivity.Call<string>("getPackageName"));
        int flag = pluginClass.GetStatic<int>("GET_META_DATA");
        AndroidJavaClass syspackage = currentActivity.Call<AndroidJavaClass>("getPackageManager");

和这里的错误，我得到

AndroidJavaException: Java.lang.NoSuchMethodError: no method with name = 'getInstalledApplications' signature=Ljava/lang/Class;' in class Lcom.unity3d/player/UnityPlayerActivity;

我如何使这项工作？或者你可以告诉/告诉我，将实现这一目标的另一种方法？

How do I make this work? Or can you tell/show me another method that will accomplish the goal?

//修改
好吧，我这个搞砸了几个小时尝试所有可能的组合，并且我知道了。

//EDIT Okay I messed with this for HOURS trying every possible combination, and I got it.

AndroidJavaClass pluginClass = new AndroidJavaClass("android.content.pm.PackageManager");
AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject currentActivity = jc.GetStatic<AndroidJavaObject>("currentActivity");
int flag = pluginClass.GetStatic<int>("GET_META_DATA");
AndroidJavaObject pm = currentActivity.Call<AndroidJavaObject>("getPackageManager");
AndroidJavaObject syspackages = pm.Call<AndroidJavaObject>("getInstalledApplications", flag);

现在我得弄清楚如何获得我需要走出Java对象和成C＃字符串和整数比这一个完全不同的问题字符串和整数....

Now I just gotta figure out how to get the strings and ints i need out of the Java object and into C# strings and ints which is a totally different problem than this....

推荐答案

正在传递一个字符串作为参数的getInstalledApplications而不是整数。

You are passing a string as the param for getInstalledApplications instead of an integer.

您需要得到你的手的一个实例的软件包管理系统，要做到这一点，你需要得到一个的活动，幸运的是，团结可以给你。

You need to get your hands on an instance of PackageManager, to do this you'll need to get an Activity, fortunately, Unity can give you that.

AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject currentActivity = jc.GetStatic<AndroidJavaObject>("currentActivity");

AndroidJavaObject packageManager = currentActivity.Call<AndroidJavaObject>("getPackageManager");

int flag = pluginClass.GetStatic<int>("GET_META_DATA");

AndroidJavaObject[] arrayOfAppInfo = packageManager.Call<AndroidJavaObject[]>("getInstalledApplications", flag);

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