Android 判斷網路是否正常

 

public boolean isInternetOn()
{
/* http://developer.android.com/training/basics/network-ops/connecting.html */
ConnectivityManager connMgr = (ConnectivityManager)m_context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected())
{
// fetch data
return true;
}
else
{
// display error
return false;
}
}