How can I get the “internet time” on iOS? [duplicate]

问题

This question already has an answer here:

Is there any way to get the tamper-proof date and time on iPhone? (1 answer)

Closed 5 years ago.

So, I'm developing an app that is based on the time, but with NSDate an user can easily hack the application by changing system time of the device. So I might want to use a better method for retrieving time.

How can I do this? Is there an easy way to retrieve time from internet?

回答1:

Checkout this Google Library: https://github.com/jbenet/ios-ntp

After the library is set up you can use it with the following line:

[NSDate networkDate];

A similar question has also been answered here: Get Date and Time from Apple Server

来源：https://stackoverflow.com/questions/27155106/how-can-i-get-the-internet-time-on-ios