Android 如何在网站中自动检查字符串'；s的源代码不存在？

我想每天检查一下

<h3>Tags</h3><ul class="ref-list"><li><a href="/platform/build/+/android-4.4.4_r1">android-4.4.4_r1</a>

标签 存在于中，如果不存在，则会收到通知

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这样我就可以知道aosp的新版本何时发布。有什么想法吗？

+1报警。您可能需要查看有关页面下载的HTTPClient文档：

示例代码段：

HttpClient client = new DefaultHttpClient();
String uri = "https://android.googlesource.com/platform/build/"
HttpGet request = new HttpGet( uri );

try {
  HttpResponse response = client.execute(request);
  StatusLine status = response.getStatusLine();
  if (status.getStatusCode() != 200) {
      throw new IOException("Invalid response from server: " + status.toString());
  }

  HttpEntity entity = response.getEntity();
  InputStream inputStream = entity.getContent();
  ByteArrayOutputStream content = new ByteArrayOutputStream();
} catch( Exception ex ) {
  throw new Exception( "Something went wrong while accessing '" + uri + "':"  + ex.getLocalizedMessage() );
}

  int readBytes = 0;
  byte[] sBuffer = new byte[1024];
  while ((readBytes = inputStream.read(sBuffer)) != -1) {
      content.write(sBuffer, 0, readBytes);
  }

  String dataAsString = new String(content.toByteArray()); 

  // TODO: Parse 'dataAsString'...

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剩下的就是解析结果，您就完成了。

获取页面源代码。把这个放在服务中

HttpClient httpclient = new DefaultHttpClient(); // Create HTTP Client
HttpGet httpget = new HttpGet("http://yoururl.com"); // Set the action you want to do
HttpResponse response = httpclient.execute(httpget); // Executeit
HttpEntity entity = response.getEntity(); 
InputStream is = entity.getContent(); // Create an InputStream with the response
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) // Read line by line
    sb.append(line + "\n");

String resString = sb.toString(); // Result is here

is.close(); // Close

然后：

String aospString = "<h3>Tags</h3><ul class=\"ref-list\"><li><a href=\"/platform/build/+/android-4.4.4_r1\">android-4.4.4_r1</a>";
if(!resString.contains(aospString)) {
    Log.d(LOGTAG, "ASOP Unavailable");
}

String aospString=“Tags
；
如果（！resString.contains（aospString））{
Log.d（LOGTAG，“ASOP不可用”）；
}

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然后，您可以使用AlarmManager以固定频率计划执行

您是如何检查的？请发布代码。编写一个应用程序，每天在闹钟上下载，如果文件从昨天起发生了更改，请向您发送电子邮件/短信？作为一个桌面应用程序可能比移动应用程序更容易——大约有3行shell脚本。