列出android中所有类型的文件

Question

I need to retrieve a list of all files of a certain type on my internal and external storage. I found this (-> List all of one file type on Android device? ) example, but it's very mp3 specific.

My app creates a .zip file which is renamed to the extension *.message

Another activity should display a list of all available .message files, from which the user can choose one to open it.

Does anyone has an idea how to begin?

Thanks!

Answer 1

To obtain a list of files with a specific extension you can use File.list() with a FilenameFilter . For example:

File dir = new File(".");

String[] names = dir.list(
    new FilenameFilter()
    {
        public boolean accept(File dir, String name)
        {
            return name.endsWith(".message");
        }
    });

Note that the returned strings are file names only, they do not contain the full path.

Answer 2

Here it is

File root = new File(globalVar.recordDir);

{
    try {
        if (root.listFiles().length > 0) {
            for (File file : root.listFiles()) {
                if (file.getName().endsWith(".mp3")) {
                    //DO somthings with it
                } 
                }
            }
        } else {
        }
    } catch (Exception e) {
    }
}