ios - How to download imagery world map to work on offline with ArcGIS Library? -

i have integrated arcgis library in 1 of project, have access map , perform functions such draw line, add stickpin, add polygon's area, etc. while offline mode, i’m beginner arcgis library don’t know how implement.

it great if 1 me make understand flow of download map , perform such functions on offline mode, appreciated.

thanks in advance.