Android如何遍历特定目录下所有文件

第一个案例为大家分享了android遍历特定目录下所有文件，包含子目录的，并删除最新创建的。

 private boolean deletelastfromfloder(string path) {
    boolean success = false;
    try {
      arraylist<file> images = new arraylist<file>();
      getfiles(images, path);
      file latestsavedimage = images.get(0);
      if (latestsavedimage.exists()) {
        for (int i = 1; i < images.size(); i++) {
          file nextfile = images.get(i);
          if (nextfile.lastmodified() > latestsavedimage.lastmodified()) {
            latestsavedimage = nextfile;
          }
        }

        log.e("brady", "images = " + latestsavedimage.getabsolutepath());
        success = latestsavedimage.delete();
      }
    } catch (exception e) {
      e.printstacktrace();
    }
    return success;
  }

  private void getfiles(arraylist<file> filelist, string path) {
    file[] allfiles = new file(path).listfiles();
    for (int i = 0; i < allfiles.length; i++) {
      file file = allfiles[i];
      if (file.isfile()) {
        filelist.add(file);
      } else if (!file.getabsolutepath().contains(".thumnail")) {
        getfiles(filelist, file.getabsolutepath());
      }
    }
  }

第二个案例介绍了文件夹遍历android代码，供大家参考，具体内容如下

package com.once;
 
import java.io.file;
import java.util.arraylist;
import java.util.linkedlist;
/**
 * 文件夹遍历
 * @author once
 *
 */
public class dirtraversal {
   
  //no recursion
  public static linkedlist<file> listlinkedfiles(string strpath) {
    linkedlist<file> list = new linkedlist<file>();
    file dir = new file(strpath);
    file file = dir.listfiles();
    for (int i = 0; i < file.length; i++) {
      if (file.isdirectory())
        list.add(file);
      else
        system.out.println(file.getabsolutepath());
    }
    file tmp;
    while (!list.isempty()) {
      tmp = (file) list.removefirst();
      if (tmp.isdirectory()) {
        file = tmp.listfiles();
        if (file == null)
          continue;
        for (int i = 0; i < file.length; i++) {
          if (file.isdirectory())
            list.add(file);
          else
            system.out.println(file.getabsolutepath());
        }
      } else {
        system.out.println(tmp.getabsolutepath());
      }
    }
    return list;
  }
 
   
  //recursion
  public static arraylist<file> listfiles(string strpath) {
    return refreshfilelist(strpath);
  }
 
  public static arraylist<file> refreshfilelist(string strpath) {
    arraylist<file> filelist = new arraylist<file>();
    file dir = new file(strpath);
    file files = dir.listfiles();
 
    if (files == null)
      return null;
    for (int i = 0; i < files.length; i++) {
      if (files.isdirectory()) {
        refreshfilelist(files.getabsolutepath());
      } else {
        if(files.getname().tolowercase().endswith("zip"))
          filelist.add(files);
      }
    }
    return filelist;
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。