ios - Change NCWidgetDisplayMode programmatically in IOS10 Widget -

i looking programmatically change height of today extension. ios10 sdsk introduced ncwidgetdisplaymode trying use programmatically change height of preferredcontentsize.

i have implemented widgetactivedisplaymodedidchange:

@available(iosapplicationextension 10.0, *) func widgetactivedisplaymodedidchange(activedisplaymode: ncwidgetdisplaymode, withmaximumsize maxsize: cgsize) {     if (activedisplaymode == ncwidgetdisplaymode.compact) {         self.preferredcontentsize = maxsize     }     else {         self.preferredcontentsize = cgsize(width: maxsize.width, height: 280)     } } 

i want widget height expand when uibutton pressed :

@ibaction func multiplybyonethousand (sender: anyobject) {      if self.extensioncontext?.widgetactivedisplaymode == ncwidgetdisplaymode.compact {          self.widgetactivedisplaymodedidchange(.expanded, withmaximumsize: cgsizemake(0, 300))     } } 

however when run code, height of today extension not change , console gives me following error:

2016-11-05 14:24:29.425697 todayextension[28590:7222420] no active animation block! 

i have tried call widgetactivedisplaymodedidchange inside animation block:

@ibaction func multiplybyonethousand (sender: anyobject) {         if self.extensioncontext?.widgetactivedisplaymode == ncwidgetdisplaymode.compact {             uiview.animatewithduration(0.2, delay: 0, options: .curvelinear, animations: { () -> void in                 self.widgetactivedisplaymodedidchange(.expanded, withmaximumsize: cgsizemake(0, 300))              }) { (completed) -> void in              //do stuff             }         } } 

but still no active animation block! error message. there way programmatically expand today extension view in ios10 ?

in ios 10, show more/show less button automatically provided in today's extension. height of widget handled automatically through ncwidgetdisplaymode. don't need provide explicit button handling widget's height.

override func viewdidload() {     super.viewdidload()      if #available(iosapplicationextension 10.0, *) {         self.extensioncontext?.widgetlargestavailabledisplaymode = .expanded     } } 

implement ncwidgetproviding protocol's method:

@available(iosapplicationextension 10.0, *) func widgetactivedisplaymodedidchange(_ activedisplaymode: ncwidgetdisplaymode, withmaximumsize maxsize: cgsize) {     if activedisplaymode == .expanded {             preferredcontentsize = cgsize(width: maxsize.width, height: 300)     } else {         preferredcontentsize = maxsize     } } 

in, ios 8 , ios 9, need explicitly handle widget's height. in ios 10, not required.

you can refer https://github.com/pgpt10/today-widget on today's widget implementation in ios 8, ios 9 , ios 10.