sd卡文件操作

File f =Environment.getExternalStorageDirectory();// 获取SD卡目录

File fileDir = new File(f, abc.txt);

String writeString2 = "basjhahxahsclahlcijaoiscjaisjcopi";

try {

            FileOutputStreamos =new FileOutputStream(fileDir);

            os.write(writeString2.getBytes());

            os.close();

        } catch (IOExceptione) {

            //TODO Auto-generated catch block

            e.printStackTrace();

        }