Unable to integrate ZXingObjC in a iOS Swift Project - ios

Question

Im working on an iOS project, which shows the customer number in a barcode. I had installed the framework ZXingObjC with CocoaPods, described in GitHub.
I can compile my Project without errors. I can also use the classes of ZXingObjC in my Objective-C classes, without errors. After than, I have added the import Command #import <ZXingObjC/ZXingObjC.h> to my bridging header file, like my other custom objective-c classes, without compile errors. (I had testet the header file by destroying some import statements and got the expected file not found exception.)
But now, I can't use any class of ZXingObjC in my swift classes. I only got the following compile error: Use of undeclared type '...'. The Xcode autocomplete is not working, too.
e.g.
var test : ZXMultiFormatWriter?
>> Use of undeclared type 'ZXMultiFormatWriter'
I tried:
setup new project, same issue
checked header search path: $(SRCROOT)/Pods/Headers/Public/Adjust
reinstalled the ZXingObjC framework
checked build settings: Enable Modules: YES
checked build settings: Other Linker Flags: $(inherited) -ObjC
-framework "ZXingObjC"
checked linked binaries in the build phases: framework is added
checked import statement in the bridging header file (#import
<ZXingObjC/ZXingObjC.h> and #import "ZXingObjC/ZXingObjC.h" -- no
difference)
Windows style: restarting Xcode and Mac ;-)
I'm using:
Xcode: 6.3.2
CocoaPods: 0.37.2
Project Deployment target: iOS 8.0
SDK: 8.3
Does anyone know the problem? Can anyone help?
How can I make the ZXingObjC framework available in swift?

Answer 1

Actually it is an easy issue:
Podfile
source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'
use_frameworks!
pod 'ZXingObjC', '~> 3.1'
So, on terminal:
cd workspace
pod install
Then, once opened project on Xcode, you have to edit bridging-header adding ZXingObj:
#import <ZXingObjC/ZXingObjC.h>
Finally, in your swift classes that uses ZXingObjC, you have to import ZXingObjC.
import ZXingObjC
class ZXingObjCWrapper {
func encode() {
let writer = ZXMultiFormatWriter.writer()
....
}
}

Answer 2

The rest of the code for when you need to set an UIImage with this bar code:
func generateDataMatrixQRCode(from string: String) -> UIImage? {
do {
let writer = ZXMultiFormatWriter()
let hints = ZXEncodeHints() as ZXEncodeHints
let result = try writer.encode(string, format: kBarcodeFormatDataMatrix, width: 1000, height: 1000, hints: hints)
if let imageRef = ZXImage.init(matrix: result) {
if let image = imageRef.cgimage {
return UIImage.init(cgImage: image)
}
}
}
catch {
print(error)
}
return nil
}

Answer 3

The header search path was not correct in my project. The right values are:
$(inherited)
"${PODS_ROOT}/Headers/Public"
"${PODS_ROOT}/Headers/Public/ZXingObjC"
The second and third lines were not added by installation with CocoaPods.
EDIT: The installed framework have to be added to "Embedded Binaries" in General tab of the project.

Answer 4

I tried everything on this page to add ZXingObjC as a Pod. My goal was to generate an Aztec barcode.
I checked my Header Search Path. As Reddas said, I had to manually add "${PODS_ROOT}/Headers/Public/ZXingObjC". I also added ZXingObjC as an Embedded Binary (in the General Tab).
I checked my bridging file & all was good. I checked my view controllers where I wanted to generate the barcode. The import ZXingObjC was there.
No compile errors. But I can't declare a variable of ZXingObjC.
No luck. Any more suggestions?
EDIT - I went into the Targets, Build Settings and searched for Header Search Paths. I added in BOTH "${PODS_ROOT}/Headers/Public/ZXingObjC" and "${PODS_ROOT}/Headers/Private/ZXingObjC"
This seemed to unclog whatever broke. It works now. Strangely, I can now even delete those entries and it works.