ZXingObjc Integration IOS ,but didn't work at all - ios

Question

I have integrated the ZXingObjc framework,and ViewController as the RootViewController.
the codes in ViewController.m follows:
#import <AudioToolbox/AudioToolbox.h>
#import "ViewController.h"
#interface ViewController ()
#property (nonatomic, strong) ZXCapture *capture;
#property (nonatomic, weak) IBOutlet UIView *scanRectView;
#property (nonatomic, weak) IBOutlet UILabel *decodedLabel;
#end
#implementation ViewController
#pragma mark - View Controller Methods
- (void)dealloc {
[self.capture.layer removeFromSuperlayer];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.capture = [[ZXCapture alloc] init];
self.capture.camera = self.capture.back;
self.capture.focusMode = AVCaptureFocusModeContinuousAutoFocus;
self.capture.rotation = 90.0f;
self.capture.layer.frame = self.view.bounds;
[self.view.layer addSublayer:self.capture.layer];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
self.capture.delegate = self;
self.capture.layer.frame = self.view.bounds;
self.capture.scanRect = self.scanRectView.frame;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
return toInterfaceOrientation == UIInterfaceOrientationPortrait;
}
#pragma mark - Private Methods
- (NSString *)barcodeFormatToString:(ZXBarcodeFormat)format {
switch (format) {
case kBarcodeFormatAztec:
return #"Aztec";
case kBarcodeFormatCodabar:
return #"CODABAR";
case kBarcodeFormatCode39:
return #"Code 39";
case kBarcodeFormatCode93:
return #"Code 93";
case kBarcodeFormatCode128:
return #"Code 128";
case kBarcodeFormatDataMatrix:
return #"Data Matrix";
case kBarcodeFormatEan8:
return #"EAN-8";
case kBarcodeFormatEan13:
return #"EAN-13";
case kBarcodeFormatITF:
return #"ITF";
case kBarcodeFormatPDF417:
return #"PDF417";
case kBarcodeFormatQRCode:
return #"QR Code";
case kBarcodeFormatRSS14:
return #"RSS 14";
case kBarcodeFormatRSSExpanded:
return #"RSS Expanded";
case kBarcodeFormatUPCA:
return #"UPCA";
case kBarcodeFormatUPCE:
return #"UPCE";
case kBarcodeFormatUPCEANExtension:
return #"UPC/EAN extension";
default:
return #"Unknown";
}
}
#pragma mark - ZXCaptureDelegate Methods
- (void)captureCameraIsReady:(ZXCapture *)capture
{
NSLog(#"%s,%d",__FUNCTION__,__LINE__);
}
- (void)captureResult:(ZXCapture *)capture result:(ZXResult *)result {
if (!result) return;
NSLog(#"%s,%d",__FUNCTION__,__LINE__);
// We got a result. Display information about the result onscreen.
NSString *formatString = [self barcodeFormatToString:result.barcodeFormat];
NSString *display = [NSString stringWithFormat:#"Scanned!\n\nFormat: %#\n\nContents:\n%#", formatString, result.text];
[self.decodedLabel performSelectorOnMainThread:#selector(setText:) withObject:display waitUntilDone:YES];
// Vibrate
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
[self.capture stop];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 2 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[self.capture start];
});
}
#end
I found that the mothod - (void)captureResult:(ZXCapture *)capture result:(ZXResult *)result doesn't work at all.
Next,the same codes i put it into the example of ZXingObjc,it works well.
I really don't know what's wrong with me.
Wish your help!

Answer 1

I had the same problem. In my situation, the view controller would launch, but would never detect a barcode. Turns out I needed to add '-ObjC' to 'Other Linker Flags'.
Reference: https://developer.apple.com/library/ios/technotes/iOSStaticLibraries/Articles/configuration.html

Answer 2

Did your Viewcontroller.h file adopt the ZXCapture protocol? Something like this:
//ViewController.h
#interface ViewController: NSObject <ZXCaptureDelegate> //<---- this guy
- (void)yourFunction;
- (void)anotherFunction;
#end
(I'm not sure what is its real name)