objective c - How can I add a Marker on ios-charts? -

i'm creating ios app using objective-c , need use ios-charts.

now i'm facing problem couldn't find way add marker graphview.

also, need change yaxis data set user action, have no idea how implement feature.

thank help.

you need implement ichartmarker or can import swift class demo.

i using objective-c project sanity, implemented ichartmarker in objective-c have put gist. have put gist have issue in future. it's basic may want modify it.

https://gist.github.com/jakehoskins/8d668688f62fa93ecf8bf7921428c53f