这次实现了简单的从网络更新tips.txt

先检查是否有更新,使用的sae的空间

网址是txtfan.sinaapp.com

public static Boolean check(Context context, String path) throws Exception {String date = "";String formerdate = "";SharedPreferences settings = context.getSharedPreferences("date",Context.MODE_PRIVATE);formerdate = settings.getString("data", null);// 读取之前的更新日期HttpPost httpRequest = new HttpPost(path);try {// 取得HTTP responseHttpResponse httpResponse = new DefaultHttpClient().execute(httpRequest);// 若状态码为200 okif (httpResponse.getStatusLine().getStatusCode() != 404) {// 取出回应字串date = EntityUtils.toString(httpResponse.getEntity());} else {date = "0";}} catch (ClientProtocolException e) {date = "0";e.printStackTrace();} catch (UnsupportedEncodingException e) {date = "0";e.printStackTrace();} catch (IOException e) {date = "0";e.printStackTrace();}SharedPreferences.Editor editor = settings.edit();// 保存现在的更新日期editor.putString("data", date);editor.commit();if (!date.equals(formerdate)) {return true;} else {return false;}}

有的话

public static Boolean getTipsOnline(String path) throws Exception {File fileTip = new File(DATA_PATH + "tips.txt");if (fileTip.exists()) {fileTip.renameTo(new File(DATA_PATH + System.currentTimeMillis()+ "bktips.txt"));}URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5 * 1000);InputStream inStream = conn.getInputStream();// 通过输入流获取html数据byte[] data = StreamTool.readInputStream(inStream);// 得到html的二进制数据DataOutputStream dataOutputStream = new DataOutputStream(new FileOutputStream(DATA_PATH + "tips.txt"));dataOutputStream.write(data);dataOutputStream.flush();return true;}

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