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

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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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