Android按时间先后顺序获取目录下文件列表

/**
  * 获取目录下所有文件(按时间排序)
  * 
  * @param path
  * @return
  */
 public static List listFileSortByModifyTime(String path) {
  List list = getFiles(path, new ArrayList());
  if (list != null && list.size() > 0) {
   Collections.sort(list, new Comparator() {
    public int compare(File file, File newFile) {
     if (file.lastModified()  getFiles(String realpath, List files) {
  File realFile = new File(realpath);
  if (realFile.isDirectory()) {
   File[] subfiles = realFile.listFiles();
   for (File file : subfiles) {
    if (file.isDirectory()) {
     getFiles(file.getAbsolutePath(), files);
    } else {
     files.add(file);
    }
   }
  }
  return files;
 }

List list = listFileSortByModifyTime("/storage/sdcard1/DCIM/Camera/");
    int i = 0;
    for (File file : list) {
     i++;
     Log.i("ZMS",
       i + ":" + file.getName() + " = "
         + file.lastModified());
    }