我如何以编程方式在我的Android应用程序中创建和查看新文件夹 [英] How I create and view new folder in my android application programatically

问题描述

我正在开发一个Android应用程序。在这个应用程序中，我想创建新的文件夹。此文件夹不存储在手机的sd卡和内部存储中。此文件夹存储在我的应用程序中。我在我的应用程序中使用导航抽屉。我在导航抽屉中将此文件夹视为树结构。所以，请帮我开发这段代码。



我在这个问题中添加了以下链接。请检查此站点的此图像。我想为这个图像开发代码。请帮助我。

Aplication Android： Android（AD）Apk免费下载|开始菜单Android Top [ ^ ]



我尝试过：



我在下面的代码中尝试创建新文件夹，

I am developing one android application. In this application, I want to create new folder. This folder does not store on "sd card" and "internal storage" of phone.This folder store in my application. I am using navigation drawer in my application. I view this folder in navigation drawer as tree structure. So, please help me for developing this code.

I added a below link in this question. Please check this image of this site. I want to develop code for this image. Please help me.
Aplication Android : Start menu for Android (AD) Apk Free Download | Android Top[^]

What I have tried:

I tried below code for creating new folder,

String newFolder = "/mynewfolder";
        String extSdcard = Environment.getExternalStorageDirectory().toString();
        File file = new File(extSdcard + newFolder);
        file.mkdir();

此代码在手机内部存储上创建新文件夹。我想在我的应用程序中创建新文件夹，并在我的应用程序上查看导航抽屉上的树结构。

This code create new folder on internal storage of phone. I want create new folder in my application and view on my application as tree structure on navigation drawer.

推荐答案

不确定你实际上在做什么，但看到< a href =http://www.codeproject.com/Articles/816470/Handling-Input-and-Storage-on-Android#internalstorage>在Android上处理输入和存储 [ ^ ]。

Not sure what you are actually trying to do, but see Handling Input and Storage on Android[^].

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