如何在android中访问特定的内部存储目录? [英] How to access a particular internal storage directory in android?

问题描述

我正在尝试学习android编程.首先，我试图了解内部文件系统&访问它们.任何帮助都将受到高度赞赏.以下是我的挑战:

I am trying to learn android programming. As a beginning, I am trying to understand the internal file system & accessing them. Any help is highly appreciated. Following are my challenges:

1. 如何通过android模拟器/Android设备监视器创建"TEST"文件夹?我需要创建一个文件夹，其中存在警报，下载和DCIM文件夹.

2. 创建的"TEST"文件夹的绝对目录路径是什么?是否可以使用以下代码访问TEST文件夹:

1. How to create a 'TEST' folder through the android emulator/Android device monitor? I need to create the folder where the alarms, download, DCIM folder are present.

2. What is the absolute directory path to the 'TEST' folder created? Is it possible to access the TEST folder using the code below:

List<File> list = Environment.getDataDirectory()+"/TEST".listFiles();

清单中是否提及对内部存储进行读取/写入的任何权限?

Does any permission to be mentioned in the manifest for read/write to internal storage?

PS:我使用的是Android Studio.

PS: I use Android Studio.

推荐答案

您可能想要

File TEST = new File(Environment.getExternalStorageDirectory(), "TEST");
TEST.mkdir(); // make directory may want to check return value
String path = TEST.getAbsolutePath(); // get absolute path

和权限

<manifest ...>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    ...
</manifest>

更多参考

• 用于存储的Android Open External Storage目录(sdcard)文件

如何我是否可以获取Android 4.0+的外部SD卡路径?

https://docs. oracle.com/javase/7/docs/api/java/io/File.html

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