use of ntp service

I'm developing an app that needs to control real time in any location on the Earth and do something when time comes. At the same time n开发者_StackOverflowot to rely on system time because user can easily change it.

Does anybody have an experience of implementing "sntp/ntp" service on android device or is there any other solution to do it? Thanks

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Check out the SNTP client code at:

https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/net/SntpClient.java