簡單的讀寫操作

public void writeFileData(String filename, String message){FileOutputStream fs = null;try {fs = openFileOutput(filename, MODE_PRIVATE);byte[] msg = message.getBytes();fs.write(msg);} catch(FileNotFoundException e) {e.printStackTrace();}catch(IOException ioe){}finally{if(fs != null){try {fs.close();} catch (IOException e) {e.printStackTrace();}}}}public String readFileData(String filename){FileInputStream fis = null;String result = null;try {fis = openFileInput(filename);int len = fis.available();byte[] msg = new byte[len];fis.read(msg);result = EncodingUtils.getString(msg, ENCODING);} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}finally{if(fis != null){try {fis.close();} catch (IOException e) {e.printStackTrace();}}}return result;}