如何打开一个对话框，列出所有的应用程序，可以打开一个给定的文件夹？

我试过以下code

 意向意图=新意图（Intent.ACTION_GET_CONTENT）;intent.setData（Uri.fromFile（Environment.getExternalStorageDirectory（）））;startActivity（Intent.createChooser（意向，打开文件夹））; 

它说：没有应用程序可以执行此操作。

我的设备有默认的文件管理器和应用程序AndroidZip（这些应用程序可以打开一个文件夹）。

它说：没有应用程序可以执行此操作。

这是不足为奇的。你是不是要求打开文件夹，因为没有这样的事情在意图系统中的文件夹。您正在试图找出哪些应用程序可以打开的路径，没有文件扩展名并没有MIME类型。有没有在设备上安装应用程序有一个＆LT;意向滤光器＆gt; 在支持的活动 ACTION_GET_CONTENT 上有没有文件扩展名并没有MIME类型的路径。

您可以尝试 ACTION_VIEW 。但是，请记住，我估计，Android设备的90％以上将一无所有，在这种方式与文件夹交易，无论是。

How to open a dialog that list all applications that can open a given folder?

I tried following code

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setData(Uri.fromFile(Environment.getExternalStorageDirectory()));
startActivity(Intent.createChooser(intent, "Open Folder"));

it says "No applications can perform this action."

My device has default File Explorer and AndroidZip applications (these apps can open a folder).

it says "No applications can perform this action."

That is not surprising. You are not asking to open a "folder", as there is no such thing as a "folder" in the Intent system. You are trying to find out what applications can open a path with no file extension and no MIME type. There are no applications installed on your device that have an <intent-filter> on an activity that supports ACTION_GET_CONTENT on a path with no file extension and no MIME type.

You might try ACTION_VIEW. However, bear in mind that I would estimate that 90+% of Android devices will have nothing that deals with "folders" in this fashion, either.