Dynamically add various controls to scrollview (iOS/Swift) -
i'm working on web application allows users customize fields want retrieve users. example, text, numbers, booleans, popups. because unknown amount of controls need decided create reference scrollview. tried adding button test can't figure out how button show up? when view page see white.
how add dynamic controls scrollview?
things tried:
- made sure autolayout correct scrollview.
the addsubview code below.
import uikit class taskdetailviewcontroller: uiviewcontroller { @iboutlet weak var thescrollview: uiscrollview! override func viewdidload() { super.viewdidload() // additional setup after loading view. //self.view.addsubview(uibutton) let cellbutton = uibutton(frame: cgrectmake(5, 5, 50, 30)) cellbutton.settitle("hello", forstate: uicontrolstate.normal) thescrollview.addsubview(cellbutton) } override func didreceivememorywarning() { super.didreceivememorywarning() // dispose of resources can recreated. } /* // mark: - navigation // in storyboard-based application, want little preparation before navigation override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject?) { // new view controller using segue.destinationviewcontroller. // pass selected object new view controller. } */ }
it appear correct way it. apparently text white default couldn't see button.
adding line
button.backgroundcolor = uicolor.blackcolor() made button visible. question asks how add various controls can done , still follow autolayout views using constraints programatically. there video on topic here (https://www.youtube.com/watch?v=bl_yzlkpg1c), make sure watch part 1 well.
