whats is Lockstate Event in iOS

Hi,

I would like to know, how we will get the apple's lockstate event in titanium. In native we have "com.apple.springboard.lockstate" to get to know lockstate. Do we have similar thing in titanium.??

I know we have "pause" & "resume" events in app but that doesn't provide us the origin for pause, means paused by call interrupt or paused by locking device or paused by pressing home button etc.

I do not have any idea about the native app development but any help in that also appreciated.

The details about the environment as mentioned below,

Details:

Application Type: Mobile,

Titanium SDK: 3.5.0,

Platform & Version: iOS 8.1,

Device: iOS Simulator & iphone 4S & 5S.,

Host OS: OSX 10.9,

Titanium Studio: 3.4.1