Check for internet connection in Flash?

问题

How do I check for an active internet connection in Flash using Actionscript 3?

回答1:

If you are using AIR, you can use the ServiceMonitor class.

Otherwise you might want to consider rolling your own with a URLLoader coupled with a timer with an exponential backoff.

回答2:

to expand on martineno's answer about rolling your own using the URLLoader, read about the HTTPStatusEvent in the documentation.

at the end of the document Adobe includes an example for checking for the existence of a file on a server, but the same could be applied to simply check for an internet connection.

来源：https://stackoverflow.com/questions/4272080/check-for-internet-connection-in-flash