To setup a SideMenu in my iOS project, I'm Using SWRevealViewController without pods and this create a bridging header file
SWRevealViewController.h
SWRevealViewController.m
MyProjectName-Bridging-Header.h
Now I want to remove these three files and add my custom SideMenu, but this cause a big problem
I trying some solutions which I found in stackoverflow and another websites like 1. go to Target > Build Settings > Swift Compiler - General > Objective-c Bridging Header and remove its value. but this case a lot of errors. 2. retrive just this file 'MyProjectName-Bridging-Header.h' but this again cause a lot of errors.
the project does not work successfully without the three file. although i don't use these three file in any part of my project.
when I delete the three files + clean the Objective-c Bridging Header I get this error.
Edit: I note that after I do the deletion step the 'import UIKit' disappears from most files in the project.
I solve the problem by the following steps
1- Delete these two files which caused in creating bridge file
SWRevealViewController.h
SWRevealViewController.m
2- remove #import "SWRevealViewController.h" from Bridging file and add #import <UIKit/UIKit.h>
and this solve the problem for me.
Are these only 3 OBJ-C files you use in your project?
Here are the steps you should follow:
1. Delete all the {{obj-c}}.h,.m,.xib along with AppName-Bridging-Header.h
Then go to Target > Build Settings > Swift Compiler - General > Objective-c Bridging Header and remove its value, as you saw in multiple stack overflow post.
Clean build and run the project to solve the errors
I have a project that was started in Objective-C, and I am trying to import some Swift code into the same class files that I have previously written Objective-C in.
I have consulted the Apple docs on using Swift and Objective-C in the same project, as well as SO question like this, but still no avail: I continue to get the file not found error after putting in #import "NewTestApp-Swift.h" (NewTestApp is the name of the Product and module).
Here is what I have done so far:
In Define Modules, selected YES for the app.
Ensured that the Product Module name did not have any space in it (see screenshot below question)
I have tried using #import "NewTestApp-Swift.h" inside ViewController.m, ViewController.h and AppDelegate.m but none of them has worked.
What else am I doing incorrectly? Thanks for your help.
Screenshot of settings:
Errors that I am presently encountering:
I was running into the same issue and couldn't get my project to import swift into obj-c classes. Using Xcode 6, (should work for Xcode 6+) and was able to do it in this way....
Any class that you need to access in the .h file needs to be a forward declaration like this
#class MySwiftClass;
In the .m file ONLY, if the code is in the same project (module) then you need to import it with
#import "ProductModuleName-Swift.h"
Link to the apple documentation about it
https://developer.apple.com/documentation/swift/imported_c_and_objective-c_apis/importing_swift_into_objective-c
If the Swift code is inside a Module (like in your case):
#import <ProductName/ProductModuleName-Swift.h>
If the Swift code is inside the project (mixed Swift and ObjC):
#import <ProductModuleName-Swift.h>
In your case, you have to add this line in the *.m file:
#import <NewTestApp/NewTestApp-Swift.h>
IMPORTANT: look at the "<" in the import statement
https://developer.apple.com/library/content/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html
How I managed to import swift into objective-c:
Defines Module set to YES (on project - not on target)
Product Module Name set (on target - not on project)
In your ViewController.m import the swift code with:
#import "MyProductModuleName-Swift.h"
Add a swift file to your objective-c project (File -> New -> Swift) and Xcode will create the bridging header from objective-c to Swift but this is crucial for making it work the other way around too - apparently.
For the last piece in this puzzle thanks to Swiftoverload for making me aware of actually adding a Swift file via Xcode GUI and not just dragging and dropping existing swift-files into my project for making it work:
http://nikolakirev.com/blog/using-swift-in-objective-c-project
Using Xcode 8.2.1 and if you look at Project > Build Settings > Objective-C Generated Interface Header Name, there it shows only one header file named like Product-Swift.h
This means that instead of importing each modules separately from Objective-C .m file, using individual -Swift.h file, you just import one Product-Swift.h which aggregated all Swift modules.
I encountered the same problem by looking for traditional way of importing modules separately, but the current version of Xcode and Swift 3 changed it to use only one header for all module importing.
Spent an hour on this issue, following these steps will help you to understand what's missing:
Open Xcode preference and navigate to DerivedData folder
Search for "swift.h" in finder
If you can not find any project-swift.h file, this file haven't been generated. You usually need to add #objc to one of your swift class and successfully build the app, only then will Xcode generate this file
If you found "xxx-swift.h" file, make sure your import statement contains the correct name.
I was having problems importing Swift into an Objective-C project. In the end I looked into the Derivied Data folder to check what Xcode 7 was generating. The filename was completely different to the one I was expecting.
Once I had the actual filename I imported that and the project could build.
iOS - Swift.h file not found
[Mixing Objective-C and Swift]
<name>-Swift.h should be created by Xcode automatically if Swift code expose an API via #objc or #objcMembers[About]
Usually a location looks like
~/Library/Developer/Xcode/DerivedData/
ProductModuleName-foo/
Build/
Intermediates.noindex/
ProductModuleName.build/
Debug-iphoneos/
ProductModuleName.build/
DerivedSources/
ProductModuleName-Swift.h
It can be changed by
Project editor -> select a target -> Build Settings -> Per-configuration Intermediate Build Files Path
By default the value is $(PROJECT_TEMP_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
Importing the header file, i.e.
#import "<ProjectName>-Swift.h"
within the .h file generated an error, stating:
-Swift.h' file not found
and the build failed.
Instead use:
#import "<ProjectName>-Swift.h"
within the .m file, and even though the same error appears, running the project anyway suppresses the error.
The swift classes are then available within the .m file.
If Your App name have any special character then use _ for special character.
For Example if your App name is Name "Test App®"
Then you can import swift file by "Test_App_-Swift.h".
Space and ® is replace by _ while you are import.
Make sure your swift class has the public declaration, and extends NSObject:
public class MySwiftClass: NSObject {
//...
}
The import should work with quotes, not brackets, if the swift class is in the same project.
if you add a Swift File first, rememeber to add swift file to your target..., in the left column
Had faced the same problem with my team when was working on project using git. One developer hasn't updated Xcode to the last version (7.3) which was required for latest Swift 2.2 version. So, compiler hasn't recognized new Swift syntax and couldn't generate interface for Swift library (projectname-swift.h).
Check if Xcode version is the latest one!
DEFINE MODULES: YES
and import "ProjectName-Swift.h" in .m file of Obj-C class
This worked for me to access Swift classes in Obj-c.
I had the same problem with #import "myProj-Swift.h" not found, Xcode 12.3, the year is 2021.
It appears that unless a bridging header has been generated, it is not possible to import myProj-Swift.h.
My (reproducible) solution, when needing to add Swift to objective-C projects is to create (File - New File - Swift file) a dummy empty Swift file in my project. Xcode then asks whether to create a bridging header, to which I answer yes. This causes a "myProj-Bridging-Header.h" file to be added to my project, which is visible in the Project Navigator.
Once this is done, the error on #import "myProj-Swift.h" disappears.
After that I can delete the dummy file, and insert the needed Swift classes into the project.
The logic of generating a visible bridging header, but leaving the -Swift.h entirely invisible escapes me entirely. Never mind the challenge of trying to find out about this in the official documentation Importing Swift into Objective-C, which (to me inaccurately) states "You don’t need to do anything special to create the generated header".
It is probably a good idea to also mind the answer from #Sandeep Bhandari to this question - who says the -Swift.h file will only be generated if the project compiles successfully.
More info also in this and this question.
I ran into this problem after duplicating an existing target. When I tried to build with the duplicated target, the "ProductName-Swift.h file not found" error appears.
After going through the build settings in the new target, I found the value of the setting "Product Name" somehow is set as the same as the target name. After setting it with the correct one the error disappeared.
If your product name is TestApp-Dev then filename will TestApp_Dev-Swift.h
You can verify by going to the following location
~/Library/Developer/Xcode/DerivedData//Build/Intermediates.noindex/yourProjectbuild/Debug-iphonesimulator/MashreqMobileApp.build/DerivedSources
If you want same file name for each build schemes then go to
Build Settings to be the same across your modules/schemes. (set it to $(PROJECT_NAME)-Swift.h).
If project name is TestApp, then the file generated will TestApp-Swift.h and it will remain same across the schemes
During development, there might be a possibility that you would have any swift class that is not completely implemented due to which there might be some syntax errors.
The swift header file will be available for use only if all the swift files are error free.
Make sure there are no syntax errors in the swift files and then try to import the swift header in the objective - c file
I faced the problem with the name of project (target). It included symbol "-". So the decision was next: if name of project is "Test-App", then name of imported class is "Test_App-Swift.h"
If you have multiple target make sure that you have build all frameworks
Xcode 11
I ran into this problem when building on Xcode 11. Took me a bit to figure out what was wrong, but essentially, I had changed the "Display Name" setting on the Target's "General" tab instead of changing directly in the Info.plist file through the "Info" tab on the Target.
This resulted in Xcode 11.5 going through an rewriting/creating a bunch of brand new custom build settings and modifying the name of the app module and the built .app product. In this case the new display name also had a forward slash (/) character in it which may ultimately be why it wasn't building (see #Silversky Technology's answer).
Regardless, I resolved this by undoing all of Xcode 11.5's automatic changes to the project file and manually making the same change to the bundle display name in the Info.plist file and everything works perfectly.
I wish it would tell you that it was doing stuff like this before it just up and does it without your consent.
Target executable was missing a dependency on my (or any other in fact) framework.
Build Phases -> Dependencies must list the dependencies of a target to avoid intermittent errors: in my case debug
build was fine and automated Jenkins CI builds were failing.
A nightmare to debug considering Jenkins output produces
voluminous garbage that's a huge time pit to get through.
I drag/drop facebooksdk.framework to my project(and i select copy items). I complete coded part and when i run my project it worked without any problem.
However when i close xCode and start xCode and run my project x code gives red error messages. Its;
"/Users/me/Desktop/xcode/swift/projects/projects/projects/projects-Bridging-Header.h:6:9: 'FacebookSDK/FacebookSDK.h' file not found"
and other one is;
"Failed to import bridging header '/Users/me/Desktop/xcode/swift/projects/projects/projects/projects-Bridging-Header.h'
The problem solved by re-added facebooksdk.framework file to my project. Did i have to always add this framework to my project(everytime i start this project xcode gives red errors)? Is there any way to fix that?
Thank you.
You need to import your facebooksdk.framework like this one inside projects-Bridging-Header.h
#import <FacebookSDK/FacebookSDK.h>
Here is a screenshot:
.h module, as you can see, copied in project, but Xcode ignore it.
I'd try uninstall XCode and install 6.2 (beta 5),
In Terminal, I tried
rm -rf ~/Library/Developer/Xcode/DerivedData ,
defaults delete com.apple.dt.Xcode...
but it didn't help.
Because you are using objective-c files, you need to add the .h file to your Bridging-Header.h file. This file was generated by Xcode itself but it's currently empty.
So open Bridging-Header.h and add the following line:
#import "QRCode.h"
Please add a header file and import the file.And the interfacing you need to do using Swift itself.
You may just use the module without importing it because you dragged the swift file in your project rather than the binary.
I'm trying to add KKGridView to my project. I've followed thier description from github as best I can:
Create a new workspace in Xcode in the same directory as your existing *.xcodeproj.
Drag in your existing Xcode project
Locate your copy of KKGridView, drag KKGridView.xcodeproj into the
workspace so that it stays at the top of the hierarchy, just like
your original project.
In the Build Phases section of your original project, link your
project with libKKGridView.a.
Now, simply import KKGridView just like an Apple framework:
But libKKGridView appears in red in my project, and I am unable to import any of the code with
#import <KKGridView/KKGridView.h>
Any ideas?
Copy this file physically to your folder,and then add file to xcode from there.Drag and drop create this problem sometimes.
Hope this helps you.
You need to import the .h files as well