'Flutter/Flutter.h' file not found while building iOS in Flutter

[KamssuPatrick]

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Title

'Flutter/Flutter.h' file not found while building iOS in Flutter

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Description

I am encountering the error 'Flutter/Flutter.h' file not found when trying to build my Flutter app for iOS. Below are the details of my environment and the steps I have followed so far.

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Environment

• Flutter version: 3.24.5
• Xcode version: 16.1
• macOS version: macOS 15.1
• CocoaPods version: 1.16.2
• iOS Deployment Target: 12.0

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Error

Here is the exact error shown in Xcode:

/Users/my_user/Documents/Projects/my_project/ios/Runner/GeneratedPluginRegistrant.h:10:9: 'Flutter/Flutter.h' file not found

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Relevant Code

The GeneratedPluginRegistrant.h file:

//
//  Generated file. Do not edit.
//

// clang-format off

#ifndef GeneratedPluginRegistrant_h
#define GeneratedPluginRegistrant_h

#import <Flutter/Flutter.h>  // The error occurs here

NS_ASSUME_NONNULL_BEGIN

@interface GeneratedPluginRegistrant : NSObject
+ (void)registerWithRegistry:(NSObject<FlutterPluginRegistry>*)registry;
@end

NS_ASSUME_NONNULL_END
#endif /* GeneratedPluginRegistrant_h */

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Steps Taken So Far

1. Ran flutter clean followed by flutter pub get.

2. Deleted Pods and related files:

   rm -rf ios/Pods ios/.symlinks ios/Flutter/Flutter.framework ios/Flutter/Flutter.podspec  

3. Reinstalled Pods:

   cd ios  
   pod install  

4. Verified that the Podfile contains:

   flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))  

5. Set the iOS deployment target to 12.0 in the Podfile and Xcode.

6. Tried recreating the iOS folder:

   rm -rf ios  
   flutter create .  
   cd ios  
   pod install  

7. Verified the Framework Search Paths in Xcode:

   $(inherited)  
   $(PROJECT_DIR)/Flutter  
   

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Questions

1. Why does the error Flutter/Flutter.h file not found occur?
2. What should I check or modify in my project to resolve this issue?

[taki-on]

@KamssuPatrick The Mobile category is for feedbacks about GitHub Mobile apps. Why don't you change the category to Programming Help :) Then you could get an answer from an expert :)