iOS Center Buttons with UIStackview


Example

Step 1 :- take 4 button in your Storyboard. Button1 , Button2 , Button 3 , Button4

Step 2 :- Give Fixed Height and width to All buttons .

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Step 3 :- All 2 - 2 button's pair in 2 stackview.

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Step 4 :- Set UIStackview Property for both .

      Distribution -> Fill Equally
           Spacing -> 5 (as per your requirement)

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Step 5 :- Add both Stackview in one Stackview

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Step 6 :- Set Distribution = Fill equally Spacing =5 in main stackview (set According to your requirement)

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Step 7 :- Now set Constrain to main stackview

      center Horizontally in container
      
      center vertically in container

        and select Update Frame.

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Step 8 :- It's time for Output for All device .

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