How to resolve this error? xcode generated Project-Swift.h error

I would just follow the instructions:

palaceCookie-Swift.h:353:43: Unknown class name 'SKPaymentTransactionObserver'; did you mean 'SKPaymentTransaction'?

palaceCookie-Swift.h:353:73: Unknown class name 'SKProductsRequestDelegate'; did you mean 'SKProductsRequest'?

palaceCookie-Swift.h:353:43: Type argument 'SKPaymentTransaction' must be a pointer (requires a '*')

palaceCookie-Swift.h:353:73: Type argument 'SKProductsRequest' must be a pointer (requires a '*')

palaceCookie-Swift.h:353:33: Type arguments cannot be applied to non-parameterized class 'NSObject'

Did you implement all the delegate funbc associated to the protocols ?

Such as:

paymentQueue(_:updatedTransactions:)

See here:

https://stackoverflow.com/questions/36516026/appdelegate-setup-for-skpaymenttransactionobserver

Note: you posted in Swift section, that's not the right place for this code related to storekit.

Better move to objectiveC or storeKit section (in app purchase)

https://forums.developer.apple.com/community/xcode/objective-c

https://forums.developer.apple.com/community/system-frameworks/in-app-purchase

The -swift.h file generated by xcode does not contain these two things, I don't know why?

SKProductsRequestDelegate
SKPaymentTransactionObserver

My Code Very Simple

import Foundation
import StoreKit


class OrangeExchangeUtil: NSObject, SKProductsRequestDelegate, SKPaymentTransactionObserver {
func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {

    }

func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {

    }
}

-swift.h

// Generated by Apple Swift version 5.1.2 effective-4.2 (swiftlang-1100.0.278 clang-1100.0.33.9)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wgcc-compat"

#if !defined(__has_include)
# define __has_include(x) 0
#endif
#if !defined(__has_attribute)
# define __has_attribute(x) 0
#endif
#if !defined(__has_feature)
# define __has_feature(x) 0
#endif
#if !defined(__has_warning)
# define __has_warning(x) 0
#endif

#if __has_include()
# include 
#endif

#pragma clang diagnostic ignored "-Wauto-import"
#include 
#include 
#include 
#include 

#if !defined(SWIFT_TYPEDEFS)
# define SWIFT_TYPEDEFS 1
# if __has_include()
#  include 
# elif !defined(__cplusplus)
typedef uint_least16_t char16_t;
typedef uint_least32_t char32_t;
# endif
typedef float swift_float2  __attribute__((__ext_vector_type__(2)));
typedef float swift_float3  __attribute__((__ext_vector_type__(3)));
typedef float swift_float4  __attribute__((__ext_vector_type__(4)));
typedef double swift_double2  __attribute__((__ext_vector_type__(2)));
typedef double swift_double3  __attribute__((__ext_vector_type__(3)));
typedef double swift_double4  __attribute__((__ext_vector_type__(4)));
typedef int swift_int2  __attribute__((__ext_vector_type__(2)));
typedef int swift_int3  __attribute__((__ext_vector_type__(3)));
typedef int swift_int4  __attribute__((__ext_vector_type__(4)));
typedef unsigned int swift_uint2  __attribute__((__ext_vector_type__(2)));
typedef unsigned int swift_uint3  __attribute__((__ext_vector_type__(3)));
typedef unsigned int swift_uint4  __attribute__((__ext_vector_type__(4)));
#endif

#if !defined(SWIFT_PASTE)
# define SWIFT_PASTE_HELPER(x, y) x##y
# define SWIFT_PASTE(x, y) SWIFT_PASTE_HELPER(x, y)
#endif
#if !defined(SWIFT_METATYPE)
# define SWIFT_METATYPE(X) Class
#endif
#if !defined(SWIFT_CLASS_PROPERTY)
# if __has_feature(objc_class_property)
#  define SWIFT_CLASS_PROPERTY(...) __VA_ARGS__
# else
#  define SWIFT_CLASS_PROPERTY(...)
# endif
#endif

#if __has_attribute(objc_runtime_name)
# define SWIFT_RUNTIME_NAME(X) __attribute__((objc_runtime_name(X)))
#else
# define SWIFT_RUNTIME_NAME(X)
#endif
#if __has_attribute(swift_name)
# define SWIFT_COMPILE_NAME(X) __attribute__((swift_name(X)))
#else
# define SWIFT_COMPILE_NAME(X)
#endif
#if __has_attribute(objc_method_family)
# define SWIFT_METHOD_FAMILY(X) __attribute__((objc_method_family(X)))
#else
# define SWIFT_METHOD_FAMILY(X)
#endif
#if __has_attribute(noescape)
# define SWIFT_NOESCAPE __attribute__((noescape))
#else
# define SWIFT_NOESCAPE
#endif
#if __has_attribute(warn_unused_result)
# define SWIFT_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
# define SWIFT_WARN_UNUSED_RESULT
#endif
#if __has_attribute(noreturn)
# define SWIFT_NORETURN __attribute__((noreturn))
#else
# define SWIFT_NORETURN
#endif
#if !defined(SWIFT_CLASS_EXTRA)
# define SWIFT_CLASS_EXTRA
#endif
#if !defined(SWIFT_PROTOCOL_EXTRA)
# define SWIFT_PROTOCOL_EXTRA
#endif
#if !defined(SWIFT_ENUM_EXTRA)
# define SWIFT_ENUM_EXTRA
#endif
#if !defined(SWIFT_CLASS)
# if __has_attribute(objc_subclassing_restricted)
#  define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) __attribute__((objc_subclassing_restricted)) SWIFT_CLASS_EXTRA
#  define SWIFT_CLASS_NAMED(SWIFT_NAME) __attribute__((objc_subclassing_restricted)) SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_CLASS_EXTRA
# else
#  define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) SWIFT_CLASS_EXTRA
#  define SWIFT_CLASS_NAMED(SWIFT_NAME) SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_CLASS_EXTRA
# endif
#endif
#if !defined(SWIFT_RESILIENT_CLASS)
# if __has_attribute(objc_class_stub)
#  define SWIFT_RESILIENT_CLASS(SWIFT_NAME) SWIFT_CLASS(SWIFT_NAME) __attribute__((objc_class_stub))
#  define SWIFT_RESILIENT_CLASS_NAMED(SWIFT_NAME) __attribute__((objc_class_stub)) SWIFT_CLASS_NAMED(SWIFT_NAME)
# else
#  define SWIFT_RESILIENT_CLASS(SWIFT_NAME) SWIFT_CLASS(SWIFT_NAME)
#  define SWIFT_RESILIENT_CLASS_NAMED(SWIFT_NAME) SWIFT_CLASS_NAMED(SWIFT_NAME)
# endif
#endif

#if !defined(SWIFT_PROTOCOL)
# define SWIFT_PROTOCOL(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) SWIFT_PROTOCOL_EXTRA
# define SWIFT_PROTOCOL_NAMED(SWIFT_NAME) SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_PROTOCOL_EXTRA
#endif

#if !defined(SWIFT_EXTENSION)
# define SWIFT_EXTENSION(M) SWIFT_PASTE(M##_Swift_, __LINE__)
#endif

#if !defined(OBJC_DESIGNATED_INITIALIZER)
# if __has_attribute(objc_designated_initializer)
#  define OBJC_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer))
# else
#  define OBJC_DESIGNATED_INITIALIZER
# endif
#endif
#if !defined(SWIFT_ENUM_ATTR)
# if defined(__has_attribute) && __has_attribute(enum_extensibility)
#  define SWIFT_ENUM_ATTR(_extensibility) __attribute__((enum_extensibility(_extensibility)))
# else
#  define SWIFT_ENUM_ATTR(_extensibility)
# endif
#endif
#if !defined(SWIFT_ENUM)
# define SWIFT_ENUM(_type, _name, _extensibility) enum _name : _type _name; enum SWIFT_ENUM_ATTR(_extensibility) SWIFT_ENUM_EXTRA _name : _type
# if __has_feature(generalized_swift_name)
#  define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME, _extensibility) enum _name : _type _name SWIFT_COMPILE_NAME(SWIFT_NAME); enum SWIFT_COMPILE_NAME(SWIFT_NAME) SWIFT_ENUM_ATTR(_extensibility) SWIFT_ENUM_EXTRA _name : _type
# else
#  define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME, _extensibility) SWIFT_ENUM(_type, _name, _extensibility)
# endif
#endif
#if !defined(SWIFT_UNAVAILABLE)
# define SWIFT_UNAVAILABLE __attribute__((unavailable))
#endif
#if !defined(SWIFT_UNAVAILABLE_MSG)
# define SWIFT_UNAVAILABLE_MSG(msg) __attribute__((unavailable(msg)))
#endif
#if !defined(SWIFT_AVAILABILITY)
# define SWIFT_AVAILABILITY(plat, ...) __attribute__((availability(plat, __VA_ARGS__)))
#endif
#if !defined(SWIFT_WEAK_IMPORT)
# define SWIFT_WEAK_IMPORT __attribute__((weak_import))
#endif
#if !defined(SWIFT_DEPRECATED)
# define SWIFT_DEPRECATED __attribute__((deprecated))
#endif
#if !defined(SWIFT_DEPRECATED_MSG)
# define SWIFT_DEPRECATED_MSG(...) __attribute__((deprecated(__VA_ARGS__)))
#endif
#if __has_feature(attribute_diagnose_if_objc)
# define SWIFT_DEPRECATED_OBJC(Msg) __attribute__((diagnose_if(1, Msg, "warning")))
#else
# define SWIFT_DEPRECATED_OBJC(Msg) SWIFT_DEPRECATED_MSG(Msg)
#endif
#if !defined(IBSegueAction)
# define IBSegueAction
#endif
#if __has_feature(modules)
#if __has_warning("-Watimport-in-framework-header")
#pragma clang diagnostic ignored "-Watimport-in-framework-header"
#endif
@import ObjectiveC;
@import StoreKit;
#endif

#pragma clang diagnostic ignored "-Wproperty-attribute-mismatch"
#pragma clang diagnostic ignored "-Wduplicate-method-arg"
#if __has_warning("-Wpragma-clang-attribute")
# pragma clang diagnostic ignored "-Wpragma-clang-attribute"
#endif
#pragma clang diagnostic ignored "-Wunknown-pragmas"
#pragma clang diagnostic ignored "-Wnullability"

#if __has_attribute(external_source_symbol)
# pragma push_macro("any")
# undef any
# pragma clang attribute push(__attribute__((external_source_symbol(language="Swift", defined_in="palaceCookie",generated_declaration))), apply_to=any(function,enum,objc_interface,objc_category,objc_protocol))
# pragma pop_macro("any")
#endif

@class SKProductsRequest;
@class SKProductsResponse;
@class SKPaymentQueue;
@class SKPaymentTransaction;

SWIFT_CLASS("_TtC12palaceCookie18OrangeExchangeUtil")
@interface OrangeExchangeUtil : NSObject <skpaymenttransactionobserver, skproductsrequestdelegate="">
- (void)productsRequest:(SKProductsRequest * _Nonnull)request didReceiveResponse:(SKProductsResponse * _Nonnull)response;
- (void)paymentQueue:(SKPaymentQueue * _Nonnull)queue updatedTransactions:(NSArray * _Nonnull)transactions;
- (nonnull instancetype)init OBJC_DESIGNATED_INITIALIZER;
@end

#if __has_attribute(external_source_symbol)
# pragma clang attribute pop
#endif
#pragma clang diagnostic pop

Error

only

@class SKProductsRequest;

@class SKProductsResponse;

@class SKPaymentQueue;

@class SKPaymentTransaction;

I guess the problem may be caused because I am c ++, swift, oc, 3 languages mixing

So, you have `#import "palaceCookie-Swift.h"`, somewhere in your project.

Where exactly have you put it?

When I put the content you have posted above in a .h file, and put `#import "...-Swift.h"` in a .m file, Xcode does not show any errors.

(I needed to fix some broken parts which might be made by the bug of this site.)

This is a problem with mixed compilation oc,swift,c++

add

@protocol SKPaymentTransactionObserver;

@protocol SKProductsRequestDelegate;

in c++ .h file this this can solve this problem

thank you

That might be one possible solution in some cases, and there may be better in some other cases (of course I mean mixed project as yours), in which you have no need to write such additional declararions manually.

As you are not showing enough info, we cannot find if such better solutions would apply to your project or not.

I just had this problem in a project that was originally written in Objective-C but rewritten in Swift and still contains a few Obj-C files. Adding this line to the [projectname]-Bridging-Header.h file fixed it:

#import <StoreKit/StoreKit.h>