os_is_network_connected()
Returns: Boolean
With this function you can check and see if your device
currently has an internet connection and it will return
true if it does, or false if it does not.
NOTE: This function checks the internal device API that
controls connections and so may return true if there is a bluetooth
connection, a Wi-Fi connection, or even just a normal network
connection that permits internet access.
if os_is_network_connected()
{
facebook_init();
}
The above code checks to see if the device has a connection to the internet and if so initialises the GameMaker: Studio Facebook API.