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Calculate percentage-base constraints in Xcode


How can foreign key constraints be temporarily disabled using T-SQL?How do I animate constraint changes?iOS Xcode fill background image based on percentageToday Extension height for iPad much larger than specifiedXcode error “Could not find Developer Disk Image”ios Auto Layout Constraint IssueAutolayout Constraint with multiple LabelsMake Vertical Space Constraint Constant equal to percentage of screen heightHow can I set AutoLayout constraints' constant as a percentage of the superview?Constraints working on iPhone 8 but not on iPhone 8 Plus






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0















I have just started an iOS project. I really want to add ALL constraints in percentage, not points, to have exactly the same sizes in all iOS devices.
For example, the point-based constraint between an item leading to superview.leading is 20.
Since in iPhone Xs Max, the total width is 414 points.



In the constraint section, should I define these values:



X.leading 
equal
superview.leading

constant: 0
Priority: 1000
Multiplier: 20/414 = 0.0483


Is it the right way to do that?










share|improve this question






























    0















    I have just started an iOS project. I really want to add ALL constraints in percentage, not points, to have exactly the same sizes in all iOS devices.
    For example, the point-based constraint between an item leading to superview.leading is 20.
    Since in iPhone Xs Max, the total width is 414 points.



    In the constraint section, should I define these values:



    X.leading 
    equal
    superview.leading

    constant: 0
    Priority: 1000
    Multiplier: 20/414 = 0.0483


    Is it the right way to do that?










    share|improve this question


























      0












      0








      0








      I have just started an iOS project. I really want to add ALL constraints in percentage, not points, to have exactly the same sizes in all iOS devices.
      For example, the point-based constraint between an item leading to superview.leading is 20.
      Since in iPhone Xs Max, the total width is 414 points.



      In the constraint section, should I define these values:



      X.leading 
      equal
      superview.leading

      constant: 0
      Priority: 1000
      Multiplier: 20/414 = 0.0483


      Is it the right way to do that?










      share|improve this question
















      I have just started an iOS project. I really want to add ALL constraints in percentage, not points, to have exactly the same sizes in all iOS devices.
      For example, the point-based constraint between an item leading to superview.leading is 20.
      Since in iPhone Xs Max, the total width is 414 points.



      In the constraint section, should I define these values:



      X.leading 
      equal
      superview.leading

      constant: 0
      Priority: 1000
      Multiplier: 20/414 = 0.0483


      Is it the right way to do that?







      ios constraints






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Mar 8 at 0:34









      rmaddy

      246k27327390




      246k27327390










      asked Mar 8 at 0:24









      RouzbehRouzbeh

      165




      165






















          1 Answer
          1






          active

          oldest

          votes


















          0














          Don't use it. percentage-base constraints in Xcode is not intuitive at all.



          as for iPhone Xs Max , use safe area.




          For apps with custom layouts, supporting iPhone X should also be
          relatively easy, especially if your app uses Auto Layout and adheres
          to safe area and margin layout guides.




          Read more: https://developer.apple.com/ios/human-interface-guidelines/overview/iphone-x/






          share|improve this answer























          • The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

            – Rouzbeh
            Mar 8 at 0:44











          • So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

            – dengApro
            Mar 8 at 0:55











          Your Answer






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          1 Answer
          1






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes









          0














          Don't use it. percentage-base constraints in Xcode is not intuitive at all.



          as for iPhone Xs Max , use safe area.




          For apps with custom layouts, supporting iPhone X should also be
          relatively easy, especially if your app uses Auto Layout and adheres
          to safe area and margin layout guides.




          Read more: https://developer.apple.com/ios/human-interface-guidelines/overview/iphone-x/






          share|improve this answer























          • The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

            – Rouzbeh
            Mar 8 at 0:44











          • So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

            – dengApro
            Mar 8 at 0:55















          0














          Don't use it. percentage-base constraints in Xcode is not intuitive at all.



          as for iPhone Xs Max , use safe area.




          For apps with custom layouts, supporting iPhone X should also be
          relatively easy, especially if your app uses Auto Layout and adheres
          to safe area and margin layout guides.




          Read more: https://developer.apple.com/ios/human-interface-guidelines/overview/iphone-x/






          share|improve this answer























          • The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

            – Rouzbeh
            Mar 8 at 0:44











          • So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

            – dengApro
            Mar 8 at 0:55













          0












          0








          0







          Don't use it. percentage-base constraints in Xcode is not intuitive at all.



          as for iPhone Xs Max , use safe area.




          For apps with custom layouts, supporting iPhone X should also be
          relatively easy, especially if your app uses Auto Layout and adheres
          to safe area and margin layout guides.




          Read more: https://developer.apple.com/ios/human-interface-guidelines/overview/iphone-x/






          share|improve this answer













          Don't use it. percentage-base constraints in Xcode is not intuitive at all.



          as for iPhone Xs Max , use safe area.




          For apps with custom layouts, supporting iPhone X should also be
          relatively easy, especially if your app uses Auto Layout and adheres
          to safe area and margin layout guides.




          Read more: https://developer.apple.com/ios/human-interface-guidelines/overview/iphone-x/







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 8 at 0:35









          dengAprodengApro

          1,16911324




          1,16911324












          • The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

            – Rouzbeh
            Mar 8 at 0:44











          • So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

            – dengApro
            Mar 8 at 0:55

















          • The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

            – Rouzbeh
            Mar 8 at 0:44











          • So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

            – dengApro
            Mar 8 at 0:55
















          The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

          – Rouzbeh
          Mar 8 at 0:44





          The problem is, the point-base constrains is not the same for the biggest iPhone (Xs Max) and the smallest one (SE). For example, 50 points in XS max is much smaller than it on iPhone SE

          – Rouzbeh
          Mar 8 at 0:44













          So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

          – dengApro
          Mar 8 at 0:55





          So what is fixed. for example a label's width is the same for various iPhone. then the anchor the label . use leading center stackView, etc.

          – dengApro
          Mar 8 at 0:55



















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