读取Android中特定文件夹内的内部文件 [英] Read internal files inside a particular folder in Android

问题描述

当然，这不是一个很难回答的问题，但是我在实现此问题时遇到了一些麻烦.我的问题是:我需要读取(或列出)Android内部存储器中特定文件夹(例如，内部存储器根目录中的"myFolder")内的文件.当然可以，但是该怎么做呢?预先感谢！

Surely, this ins't a very hard question to be answered, but I'm having some trouble to implement this. My issue is: I need to read (or list) the files inside of a particular folder (say "myFolder", located in internal storage root) in Android's internal storage. Sure, it is possible, but how to do this? Thanks in advance!

推荐答案

要读取设备中的文件，您可以执行以下操作:

To read the files inside your device you would do something like this:

// gets the files in the directory
File fileDirectory = new File(Environment.getDataDirectory()+"/YourDirectory/");
// lists all the files into an array
File[] dirFiles = fileDirectory.listFiles();

if (dirFiles.length != 0) {
    // loops through the array of files, outputing the name to console
    for (int ii = 0; ii < dirFiles.length; ii++) {
        String fileOutput = dirFiles[ii].toString();
        System.out.println(fileOutput); 
    }
}

如果要从SD卡中取出文件，只需将getDataDirectory更改为getExternalStorageDirectory.

If you wanted to get the files off an SD card, you would simply change getDataDirectory to getExternalStorageDirectory.

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