检查是否wifi 连接还是 mibile data 连接
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI); boolean isWifiConn = networkInfo.isConnected();networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);boolean isMobileConn = networkInfo.isConnected();Log.d(DEBUG_TAG, "Wifi connected: " + isWifiConn);Log.d(DEBUG_TAG, "Mobile connected: " + isMobileConn);
public boolean isOnline() { ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); return (networkInfo != null && networkInfo.isConnected());}