ZXingObjC二维码扫描

#import "QRScanViewController.h"
#import "AppDelegate.h"

@interface QRScanViewController ()
{
    BOOL infoShowing;
    UIAlertView *alert;
    BOOL upToDown;
    int num;
    UIImageView *lineImageView;
    NSTimer *timer;
}
@end

@implementation QRScanViewController
@synthesize capture;
@synthesize scanRectView;
@synthesize backImageView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        [self initViewFrame];
    }
    return self;
}

- (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];
    [self.view bringSubviewToFront:self.backImageView];
    [self.view bringSubviewToFront:self.scanRectView];

    lineImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"scan_line.png"]];
    lineImageView.frame = CGRectMake(self.scanRectView.frame.origin.x, self.scanRectView.frame.origin.y, self.scanRectView.frame.size.width, 4);
    [self.view addSubview:lineImageView];
}

- (void)lineAnimation
{
    if (!([self isViewLoaded] && [self.view superview])) {
        return;
    }
    if (upToDown) {
        num++;
        float temp = 0.0;
        if (4*num > self.scanRectView.frame.size.height-4) {
            temp = self.scanRectView.frame.size.height+self.scanRectView.frame.origin.y;
            upToDown = NO;
        }else{
            temp = self.scanRectView.frame.origin.y + 4*num;
        }
        lineImageView.frame = CGRectMake(self.scanRectView.frame.origin.x, temp, self.scanRectView.frame.size.width, 4);
    }else{
        num--;
        float temp = 0.0;
        if (num <= 0) {
            temp = self.scanRectView.frame.origin.y;
            upToDown = YES;
        }else{
            temp = self.scanRectView.frame.origin.y + 4*num;
        }
        lineImageView.frame = CGRectMake(self.scanRectView.frame.origin.x, temp, self.scanRectView.frame.size.width, 4);
    }
}

- (void)viewDidAppear:(BOOL)animated
{
    if (timer) {
        [timer invalidate];
        timer = nil;
    }
    upToDown = YES;
    num = 0;
    lineImageView.frame = CGRectMake(self.scanRectView.frame.origin.x, self.scanRectView.frame.origin.y, self.scanRectView.frame.size.width, 4);
    timer = [NSTimer scheduledTimerWithTimeInterval:0.02 target:self selector:@selector(lineAnimation) userInfo:nil repeats:YES];
}

- (void)stopTimer
{
    if (timer) {
        [timer invalidate];
        timer = nil;
    }
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    self.capture.delegate = self;
    self.capture.layer.frame = self.view.bounds;
//    CGAffineTransform captureSizeTransform = CGAffineTransformMakeScale(320 / self.view.frame.size.width, 480 / self.view.frame.size.height);
//    self.capture.scanRect = CGRectApplyAffineTransform(self.scanRectView.frame, captureSizeTransform);
    if (viewer.device == DEVICE_IPAD || viewer.device == DEVICE_IPAD3) {
        [self showaCapture];
    }else{
        self.capture.rotation = 90.0f;
        CGAffineTransform transform = CGAffineTransformMakeRotation(0);
        [self.capture setTransform:transform];
        CGRect f = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);
        self.view.layer.frame=f;
        self.capture.layer.frame = f;
    }
}

- (void)showaCapture
{
    CGAffineTransform transform;
    if (self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft)
    {
        self.capture.rotation = 180.0f;
        transform = CGAffineTransformMakeRotation(M_PI/2);
    }
    else if (self.interfaceOrientation == UIInterfaceOrientationLandscapeRight)
    {
        self.capture.rotation = 0.0f;
        transform = CGAffineTransformMakeRotation(-M_PI/2);
    }
    else if (self.interfaceOrientation == UIInterfaceOrientationPortrait)
    {
        self.capture.rotation = 90.0f;
        transform = CGAffineTransformMakeRotation(0);
    }
    else if (self.interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
    {
        self.capture.rotation = 270.0f;
        transform = CGAffineTransformMakeRotation(M_PI);
    }

    [self.capture setTransform:transform];
    CGRect f = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);
    self.view.layer.frame=f;
    self.capture.layer.frame = f;
}

#pragma mark - ZXCaptureDelegate Methods

//- (void)captureCameraIsReady:(ZXCapture *)capture
//{
//
//}
//
//- (void)captureSize:(ZXCapture *)capture width:(NSNumber *)width height:(NSNumber *)height
//{
//
//}

- (void)captureResult:(ZXCapture *)capture result:(ZXResult *)result
{
    if (!result) {
        return;
    }
    NSLog(@"结果是什么= %@",result.text);
    NSString *formatString = [self barcodeFormatToString:result.barcodeFormat];
    if (![formatString isEqualToString:@"QR Code"]) {
        return;
    }

    NSString *display = [NSString stringWithFormat:@"Scanned!\n\nFormat: %@\n\nContents:\n%@", formatString, result.text];
    NSLog(@"二维码是%@",display);
//    [decodedLabel performSelectorOnMainThread:@selector(setText:) withObject:display waitUntilDone:YES];
    AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
    if (infoShowing) {
        return;
    }
    if (alert) {
        [alert release];
        alert = nil;
    }
    alert = [[UIAlertView alloc] initWithTitle:@"信息" message:result.text delegate:nil cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];
    alert.delegate = self;
    [alert show];
    infoShowing = YES;
}

#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";
    }
}

//- (BOOL)shouldAutorotate
//{
//    return YES;
//}
//
//- (BOOL)shouldAutomaticallyForwardRotationMethods
//{
//    return YES;
//}
//
//- (NSUInteger)supportedInterfaceOrientations
//{
//    return UIInterfaceOrientationMaskAll;
//}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)rotated
{
        [self setViewFrame];
}

- (void)setViewFrame{
}

- (void)initViewFrame{
}

#pragma mark - UIAlertViewDelegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex != alert.cancelButtonIndex) {

    }
    infoShowing = NO;
}

- (void)dealloc
{
    [super dealloc];
}
/*
#pragma mark - Navigation

@end