Android 遍历SDCARD的文件夹并显示目录信息

android 遍历sdcard的文件夹并显示目录信息

private string mresult = new string(); private string[] mfilelist = null;

1）、显示所有文件/

file flist = new file("/mnt/sdcard");
  mfilelist = flist.list();
  for(string str: mfilelist){
    mresult += str;
    mresult += "\n";
  }
textview tv = (textview)findviewbyid(r.id.result);
tv.settext(mresult.tostring());

２）、显示指定后缀名的文件/

filenamefilter fnf = new filenamefilter(){
    public boolean accept(file dir, string filename) {
      if(filename.endswith(".mp3")) return true;
      return false;
    }
  };

  mfilelist = flist.list(fnf);

  for(string str: mfilelist){
    mresult += str;
    mresult += "\n";
  }

3）、仅显示目录/

filefilter ff = new filefilter(){
    public boolean accept(file pathname) {
      return pathname.isdirectory();
    }
  };
file[] filedir = flist.listfiles(ff);
for (int i = 0; i < filedir.length; i++) {
    string str = filedir[i].getname();
    mresult += str;
    mresult += "\n";
  }

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