// 判断sd卡是否存在        boolean sdCardExist = Environment.getExternalStorageState().equals(                android.os.Environment.MEDIA_MOUNTED);        // 获得sd卡根目录        if (sdCardExist) {            File dir = Environment.getExternalStorageDirectory();            String path = dir.getAbsolutePath() + "/麻城市宅基地资料/";            ArrayList
     
       folder = getFolder(path);            listParents = listParent(folder);        }
     

------------------------

// List转换为String[]    public String[] listParent(ArrayList
     
       list) {        int size = list.size();        String[] array = new String[size];        for (int i = 0; i < list.size(); i++) {            array[i] = (String) list.get(i);        }        return array;    }    // 检查文件夹是否存在    boolean isFolderExists(String strFolder) {        File file = new File(strFolder);        return file.exists();    }    // 扫描文件夹目录下的文件夹名字    public ArrayList
      
        getFolder(String path) {        ArrayList
       
         names = new ArrayList
        
         ();        File file = new File(path);        if (file.isDirectory()) {            File[] array = file.listFiles();            for (int i = 0; i < array.length; i++) {                File f = array[i];                names.add(f.getName());                System.out.println("文件夹名称" + f.getName());            }        }        return names;    }    // 扫描文件夹里面的数据    public ArrayList
         
           folderScan(String path) {        File file = new File(path);        ArrayList
          
            names = new ArrayList
           
            (); if (file.isDirectory()) { File[] array = file.listFiles(); for (int i = 0; i < array.length; i++) { File f = array[i]; if (f.isFile()) { // FILE TYPE String name = f.getName(); if (name.contains(".jpg")) { names.add(name); fileScan(f.getAbsolutePath()); } } else { // FOLDER TYPE folderScan(f.getAbsolutePath()); } } } return names; } // 扫描 public void fileScan(String file) { Uri data = Uri.parse("file://" + file); sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, data)); }
           
          
         
        
       
      
     

 

// 重命名文件    public void renameFloder(String floerName, String reName) {        File file = new File(floerName);        System.out.println("-->" + file.toString());        System.out.println("-->" + rename);        file.renameTo(new File(reName));    }