ios - Swift UITableViewController Reduce Loading Time -

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i'm creating ios app in swift 1.2 master-detail uitableviewcontroller setup mastertableviewcontroller has cells push detailtableviewcontroller.

detailtableviewcontroller has complex cells pull data web client generate chart, similar in apple's health app. takes 5-10 seconds data download.

as result, there 5-10 second delay when cell in mastertableviewcontroller tapped before detailtableviewcontroller shown.

i ideally push mastertableviewcontroller detailtableviewcontroller , display activity indicator on detailtableviewcontroller page dismissed when data downloaded.

could point me in direction accomplish this? thank you! :)

my code below pushing master detail. basic. feel if change in viewdidload or cellforrowatindexpath method, done easily.

func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {     tableview.deselectrowatindexpath(indexpath, animated: false)     let detailvc = detailtableviewcontroller()     detailvc.navigationitem.title = "your charts"     self.navigationcontroller?.pushviewcontroller(detailvc, animated: true) }

on detail view controller can create uiactivityindicatorview variable.

in viewdidappear can call activity indicator, bring front , start animating it.

the create function populates array store data cells use , re work cellforrowatindexpath use it. (instead of fetching data in each cell).

then in function fetch data, right after (or before) update table tell activity indicator stop animating.


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