Implicit declaration of function 'UI_USER_INTERFACE_IDIOM' is invalid in C99












1















In Swift and Objective c Hybrid project(link https://github.com/shohagHub/Constants) I have an Objective C file Constants.h



Where I Declare a macro #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)



When I returned this macro from a method



-(BOOL)isIphone{
return IS_IPHONE;
}


The Following build error occurs
"Implicit declaration of function 'UI_USER_INTERFACE_IDIOM' is invalid in C99"



How Can I remove this error.










share|improve this question





























    1















    In Swift and Objective c Hybrid project(link https://github.com/shohagHub/Constants) I have an Objective C file Constants.h



    Where I Declare a macro #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)



    When I returned this macro from a method



    -(BOOL)isIphone{
    return IS_IPHONE;
    }


    The Following build error occurs
    "Implicit declaration of function 'UI_USER_INTERFACE_IDIOM' is invalid in C99"



    How Can I remove this error.










    share|improve this question



























      1












      1








      1








      In Swift and Objective c Hybrid project(link https://github.com/shohagHub/Constants) I have an Objective C file Constants.h



      Where I Declare a macro #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)



      When I returned this macro from a method



      -(BOOL)isIphone{
      return IS_IPHONE;
      }


      The Following build error occurs
      "Implicit declaration of function 'UI_USER_INTERFACE_IDIOM' is invalid in C99"



      How Can I remove this error.










      share|improve this question
















      In Swift and Objective c Hybrid project(link https://github.com/shohagHub/Constants) I have an Objective C file Constants.h



      Where I Declare a macro #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)



      When I returned this macro from a method



      -(BOOL)isIphone{
      return IS_IPHONE;
      }


      The Following build error occurs
      "Implicit declaration of function 'UI_USER_INTERFACE_IDIOM' is invalid in C99"



      How Can I remove this error.







      objective-c swift xcode






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 24 '18 at 7:18







      Saleh Enam Shohag

















      asked Nov 24 '18 at 6:42









      Saleh Enam ShohagSaleh Enam Shohag

      199114




      199114
























          2 Answers
          2






          active

          oldest

          votes


















          2














          please add to your Constants.h
          #import <UIKit/UIKit.h>

          it will work






          share|improve this answer
























          • Thanks it worked perfectly. How could i miss that!!! :)

            – Saleh Enam Shohag
            Nov 25 '18 at 9:01



















          1














          Does your file import UIKit? No, it doesn't. Your Constants.h file imports Foundation, not UIKit. Import UIKit instead and your code will compile.



          But also note: the docs on UI_USER_INTERFACE_IDIOM expicitly say:




          If your app runs in iOS 3.2 and later, use userInterfaceIdiom instead.




          So here's a better rewrite of your entire Constants.h file:



          #import <UIKit/UIKit.h>

          @interface Constants : NSObject
          #define IS_IPHONE ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
          -(BOOL)isIphone;
          @end





          share|improve this answer


























          • yes i import the Foundationo

            – Saleh Enam Shohag
            Nov 24 '18 at 8:52











          • Thanks your edited solution is a smart one.

            – Saleh Enam Shohag
            Nov 25 '18 at 9:06











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53455830%2fimplicit-declaration-of-function-ui-user-interface-idiom-is-invalid-in-c99%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          please add to your Constants.h
          #import <UIKit/UIKit.h>

          it will work






          share|improve this answer
























          • Thanks it worked perfectly. How could i miss that!!! :)

            – Saleh Enam Shohag
            Nov 25 '18 at 9:01
















          2














          please add to your Constants.h
          #import <UIKit/UIKit.h>

          it will work






          share|improve this answer
























          • Thanks it worked perfectly. How could i miss that!!! :)

            – Saleh Enam Shohag
            Nov 25 '18 at 9:01














          2












          2








          2







          please add to your Constants.h
          #import <UIKit/UIKit.h>

          it will work






          share|improve this answer













          please add to your Constants.h
          #import <UIKit/UIKit.h>

          it will work







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 24 '18 at 20:31









          JackJack

          536




          536













          • Thanks it worked perfectly. How could i miss that!!! :)

            – Saleh Enam Shohag
            Nov 25 '18 at 9:01



















          • Thanks it worked perfectly. How could i miss that!!! :)

            – Saleh Enam Shohag
            Nov 25 '18 at 9:01

















          Thanks it worked perfectly. How could i miss that!!! :)

          – Saleh Enam Shohag
          Nov 25 '18 at 9:01





          Thanks it worked perfectly. How could i miss that!!! :)

          – Saleh Enam Shohag
          Nov 25 '18 at 9:01













          1














          Does your file import UIKit? No, it doesn't. Your Constants.h file imports Foundation, not UIKit. Import UIKit instead and your code will compile.



          But also note: the docs on UI_USER_INTERFACE_IDIOM expicitly say:




          If your app runs in iOS 3.2 and later, use userInterfaceIdiom instead.




          So here's a better rewrite of your entire Constants.h file:



          #import <UIKit/UIKit.h>

          @interface Constants : NSObject
          #define IS_IPHONE ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
          -(BOOL)isIphone;
          @end





          share|improve this answer


























          • yes i import the Foundationo

            – Saleh Enam Shohag
            Nov 24 '18 at 8:52











          • Thanks your edited solution is a smart one.

            – Saleh Enam Shohag
            Nov 25 '18 at 9:06
















          1














          Does your file import UIKit? No, it doesn't. Your Constants.h file imports Foundation, not UIKit. Import UIKit instead and your code will compile.



          But also note: the docs on UI_USER_INTERFACE_IDIOM expicitly say:




          If your app runs in iOS 3.2 and later, use userInterfaceIdiom instead.




          So here's a better rewrite of your entire Constants.h file:



          #import <UIKit/UIKit.h>

          @interface Constants : NSObject
          #define IS_IPHONE ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
          -(BOOL)isIphone;
          @end





          share|improve this answer


























          • yes i import the Foundationo

            – Saleh Enam Shohag
            Nov 24 '18 at 8:52











          • Thanks your edited solution is a smart one.

            – Saleh Enam Shohag
            Nov 25 '18 at 9:06














          1












          1








          1







          Does your file import UIKit? No, it doesn't. Your Constants.h file imports Foundation, not UIKit. Import UIKit instead and your code will compile.



          But also note: the docs on UI_USER_INTERFACE_IDIOM expicitly say:




          If your app runs in iOS 3.2 and later, use userInterfaceIdiom instead.




          So here's a better rewrite of your entire Constants.h file:



          #import <UIKit/UIKit.h>

          @interface Constants : NSObject
          #define IS_IPHONE ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
          -(BOOL)isIphone;
          @end





          share|improve this answer















          Does your file import UIKit? No, it doesn't. Your Constants.h file imports Foundation, not UIKit. Import UIKit instead and your code will compile.



          But also note: the docs on UI_USER_INTERFACE_IDIOM expicitly say:




          If your app runs in iOS 3.2 and later, use userInterfaceIdiom instead.




          So here's a better rewrite of your entire Constants.h file:



          #import <UIKit/UIKit.h>

          @interface Constants : NSObject
          #define IS_IPHONE ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
          -(BOOL)isIphone;
          @end






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 25 '18 at 4:51

























          answered Nov 24 '18 at 6:48









          mattmatt

          328k46530731




          328k46530731













          • yes i import the Foundationo

            – Saleh Enam Shohag
            Nov 24 '18 at 8:52











          • Thanks your edited solution is a smart one.

            – Saleh Enam Shohag
            Nov 25 '18 at 9:06



















          • yes i import the Foundationo

            – Saleh Enam Shohag
            Nov 24 '18 at 8:52











          • Thanks your edited solution is a smart one.

            – Saleh Enam Shohag
            Nov 25 '18 at 9:06

















          yes i import the Foundationo

          – Saleh Enam Shohag
          Nov 24 '18 at 8:52





          yes i import the Foundationo

          – Saleh Enam Shohag
          Nov 24 '18 at 8:52













          Thanks your edited solution is a smart one.

          – Saleh Enam Shohag
          Nov 25 '18 at 9:06





          Thanks your edited solution is a smart one.

          – Saleh Enam Shohag
          Nov 25 '18 at 9:06


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53455830%2fimplicit-declaration-of-function-ui-user-interface-idiom-is-invalid-in-c99%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          404 Error Contact Form 7 ajax form submitting

          How to know if a Active Directory user can login interactively

          TypeError: fit_transform() missing 1 required positional argument: 'X'