Android中判断网络连接状态的方法

// check all network connect, WIFI or mobilepublic static boolean isNetworkAvailable(final Context context) {  boolean hasWifoCon = false;  boolean hasMobileCon = false;   ConnectivityManager cm = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE);  NetworkInfo[] netInfos = cm.getAllNetworkInfo();  for (NetworkInfo net : netInfos) {     String type = net.getTypeName();    if (type.equalsIgnoreCase("WIFI")) {      LevelLogUtils.getInstance().i(tag, "get Wifi connection");      if (net.isConnected()) {        hasWifoCon = true;      }    }     if (type.equalsIgnoreCase("MOBILE")) {      LevelLogUtils.getInstance().i(tag, "get Mobile connection");      if (net.isConnected()) {        hasMobileCon = true;      }    }  }  return hasWifoCon || hasMobileCon; }

// network available cannot ensure Internet is availablepublic static boolean isNetWorkAvailable(final Context context) {  Runtime runtime = Runtime.getRuntime();  try {    Process pingProcess = runtime.exec("/system/bin/ping -c 1 www.baidu.com");    int exitCode = pingProcess.waitFor();    return (exitCode == 0);  } catch (Exception e) {    e.printStackTrace();  }  return false;}

URL url = new URL("http://www.google.com");HttpURLConnection urlc = (HttpURLConnection) url.openConnection();urlc.setConnectTimeout(3000);urlc.connect();if (urlc.getResponseCode() == 200) {  return new Boolean(true);}