Question

我试图从SD卡搜索文件，所以我可以删除多个和重复的文件.`

private List<String> searchForFileNameContainingSubstring(String substring)
{
    path = Environment.getExternalStorageDirectory().getPath() + "/";
    //This is assuming you pass in the substring from input.
    File file = new File(path); //Change this to the directory you want to search in.

    List<String> filesContainingSubstring = new ArrayList<String>();

    if (file.exists() && file.isDirectory())
    {
        String[] files = file.list(); //get the files in String format.
        for (String fileName : files)
        {
            if (fileName.contains(substring)) 
                filesContainingSubstring.add(fileName);
        }
    }

    for (String fileName : filesContainingSubstring)
    {
        System.out.println(fileName); //or do other operation 
    }

    return filesContainingSubstring; //return the list of filenames containing substring.
}

如何从sdcard /目录中扫描其他子文件夹

它仅显示sdcard目录的结果

Answer 1

您可以使用 Apache Common FileUtils.listFiles方法。您可以通过将第三个参数设置为true来递归搜索整个文件夹。此外，您可以通过将第二个参数传递给String数组来定位特定的文件扩展名，如下所示。如果要将任何扩展名作为目标，请传递null。

注意： 扩展名称不包括＆＃39;。＆＃39;它＆＃34; jpg＆＃34;而不是＆＃34; .jpg＆＃34;

    String[] extensions = {"png","jpg"};
    Collection images = FileUtils.listFiles(new File("dirPath"),extensions, true);
    for (Object obj : images){
        File file = (File) obj;
        // your code logic
    }

扫描子文件夹

1 个答案: