android 判断网络是否连接

//检查网络是否连接

 private boolean haveNetWork(Context context){

  

  boolean isNetWork = false;

  

  ConnectivityManager conn = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

  NetworkInfo info = conn.getActiveNetworkInfo();

  if(info != null){

   if (info.isAvailable() && info.isConnected()) {

     isNetWork = true;

   }

  }

  

  return isNetWork;

 }