Xamarin.iOS How to resize a textbox to device width inside a ScrollView -


i'm using visual studio 2017 , xamarin.ios , new xamarin.

i want place textbox in view spans width of superview. that, pin adding top, leading, , trailing space constraints (and modify constant trailing space constraint), textbox expands along device width. works fine, until introduce scrollview.

when place textbox inside scrollview , add top, leading, , trailing space constraints, width doesn't follow trailing space constraint , width resizes size of default text.

the scrollview constrained leading , trailing space 0, , top space 20 superview.

constraint values scrollview

constraint values textbox

how can make textbox expand width of superview inside scrollview? or there better alternative doing?


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