ios - How to add bottom constraint? -

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i using xcode 8.i add uiview in bottom.i see perfect in storyboard. storyboard

enter image description here

but when run in simulator doesn't perfect. don't know problem is.

enter image description here

i'm not sure if understood question correctly, in xcode add constraints ctrl+click+drag view needs constraint other view (or layout margins). may this: ctrl+click+drag

on size inspector (on left side) should see constraints, example this: example size inspector 4 constraints defined

this can edit properties of constraints.


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