显示SD卡里的文件列表

读取SD卡文件信息，添加到ListView中显示出来:

ListView取得SD文件信息的代码:

List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
        String sDStateString = Environment.getExternalStorageState();
        if (sDStateString.equals(Environment.MEDIA_MOUNTED)) {
            try {
                File SDFile = Environment.getExternalStorageDirectory();
                File sdPath = new File(SDFile.getAbsolutePath());
                if (sdPath.listFiles().length > 0) {
                    for (File file : sdPath.listFiles()) {
                        Map<String, Object> map = new HashMap<String, Object>();
                        map.put("text_content", file.getName());        //get filename
                        list.add(map);
                    }
                }
            } catch (Exception e) {
                //
            }
        }
        return list;