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//
//? SYTCodeScanerViewController.m
//? SYTCodeScan
//
//? Created by iMac on 15/5/6.
//? Copyright (c) 2015年 S.A. All rights reserved.
//
?
#import "SYTCodeScanerViewController.h"
#import <AVFoundation/AVFoundation.h>
#import <AudioToolbox/AudioToolbox.h>
#import <ZXingObjC/ZXingObjC.h>
?
?
@interfaceSYTCodeScanerViewController ()<AVCaptureMetadataOutputObjectsDelegate, UIImagePickerControllerDelegate,
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? UINavigationControllerDelegate, UIAlertViewDelegate>
?
@property (nonatomic ,strong) AVCaptureSession *captureSession; ? ? ? ? ? ? ? ? //捕捉会话
@property (nonatomic, strong) AVCaptureVideoPreviewLayer *videoPreviewLayer;? ? //预览图层layer
@property (strong, nonatomic) UIView *boxView;? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? //扫描识别框
?
@property (weak, nonatomic) IBOutletUIButton *scanImageButton;
@property (nonatomic, strong) UIImagePickerController *imagePickerController;
@property (weak, nonatomic) IBOutletUIButton *openTorchButton;
?
@end
?
@implementation SYTCodeScanerViewController
?
- (void)viewDidLoad {
?? ?
? ? [superviewDidLoad];
?? ?
? ? [selfstartScan];
}
?
- (void)viewWillAppear:(BOOL)animated
{
? ? [super viewWillAppear:animated];
?? ?
}
?
- (void)viewDidAppear:(BOOL)animated
{
? ? [super viewDidAppear:animated];
}
?
-(void)viewDidDisappear:(BOOL)animated{
? ? [super viewDidDisappear:animated];
}
?
- (void)dealloc
{
? ? [selfstopScanner];
}
?
- (void)startScan
{
? ? //初始化设备(摄像头)
? ? NSError *error = nil;
? ? AVCaptureDevice *captureDevice = [AVCaptureDevicedefaultDeviceWithMediaType:AVMediaTypeVideo];
?? ?
? ? //创建输入流
? ? AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:captureDevice error:&error];
? ? if (error)
? ? {
? ? ? ? NSLog(@"没有摄像头:%@", error.localizedDescription);
? ? ? ? return;
? ? }
?? ?
?? ?
? ? //创建输出流
? ? AVCaptureMetadataOutput *output = [[AVCaptureMetadataOutputalloc] init];
?? ?
? ? //实例化捕捉会话并添加输入,输出流
? ? if (!_captureSession) {
? ? ? ? _captureSession = [[AVCaptureSession alloc] init];
? ? }
?? ?
? ? //高质量采集率
? ? [_captureSessionsetSessionPreset:AVCaptureSessionPresetHigh];
?? ?
? ? [_captureSessionaddInput:input];
? ? [_captureSession addOutput:output];
?? ?
? ? //设置输出的代理,在主线程里刷新
? ? [output setMetadataObjectsDelegate:selfqueue:dispatch_get_main_queue()]; ? //用串行队列新线程结果在UI上显示较慢
?? ?
? ? //扫码类型
? ? [output setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode, ? ? ? ? //二维码
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeCode39Code, ? ? //条形码 ? 韵达和申通
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeCode128Code,? ? //CODE128条码? 顺丰用的
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeCode39Mod43Code,
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeEAN13Code,
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeEAN8Code,
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeCode93Code,? ? //条形码,星号来表示起始符及终止符,如邮政EMS单上的条码
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? AVMetadataObjectTypeUPCECode]];
?? ?
? ? _videoPreviewLayer = [[AVCaptureVideoPreviewLayeralloc] initWithSession:_captureSession];
?? ?
? ? [_videoPreviewLayersetVideoGravity:AVLayerVideoGravityResizeAspectFill];
?? ?
? ? //添加预览图层
? ? _videoPreviewLayer.frame = self.view.bounds;
? ? [self.view.layeraddSublayer:_videoPreviewLayer];
? ? [self.viewbringSubviewToFront:self.view.subviews[0]];
?
?? ?
? ? //扫描框
?? ?
? ? _boxView = [[UIViewalloc] initWithFrame:CGRectMake(60, 100, 200, 200)];
? ? _boxView.layer.borderColor = [UIColorgreenColor].CGColor;
? ? _boxView.layer.borderWidth = 1.0f;
? ? [self.view addSubview:_boxView];
?? ?
? ? //扫描识别范围
? ? output.rectOfInterest = CGRectMake(100 / self.view.bounds.size.height,
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 60? / self.view.bounds.size.width,
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 200 / self.view.bounds.size.height,
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 200 / self.view.bounds.size.width);
?? ?
? ? //开始扫描
? ? [_captureSessionstartRunning];
?? ?
}
?
- (void)stopScanner
{
? ? [self openLight:NO];
?? ?
? ? [self.captureSessionstopRunning];
? ? self.captureSession = nil;
}
?
#pragma mark - 扫描结果代理方法
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{
? ? [_captureSessionstopRunning];
//? ? [_videoPreviewLayer removeFromSuperlayer];
?? ?
? ? if (metadataObjects.count > 0) {
?? ? ? ?
? ? ? ? [self playBeep];
?? ? ? ?
? ? ? ? AVMetadataMachineReadableCodeObject *obj = metadataObjects[0];
?? ? ? ?
? ? ? ? [selfshowInfoWithMessage:obj.stringValueandTitle:@"扫描成功"];
?? ? ? ?
? ? ? ? NSLog(@"扫码扫描结果obj.stringValue == %@", obj.stringValue);
?? ? ? ?
? ? }
?? ?
}
?
?
#pragma mark 照片处理
?
-(void)getInfoWithImage:(UIImage *)img{
?? ?
? ? UIImage *loadImage= img;
? ? CGImageRef imageToDecode = loadImage.CGImage;
?? ?
? ? ZXLuminanceSource *source = [[ZXCGImageLuminanceSourcealloc] initWithCGImage:imageToDecode];
? ? ZXBinaryBitmap *bitmap = [ZXBinaryBitmapbinaryBitmapWithBinarizer:[ZXHybridBinarizerbinarizerWithSource:source]];
?? ?
? ? NSError *error = nil;
?? ?
? ? ZXDecodeHints *hints = [ZXDecodeHintshints];
?? ?
? ? ZXMultiFormatReader *reader = [ZXMultiFormatReaderreader];
? ? ZXResult *result = [reader decode:bitmap
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? hints:hints
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? error:&error];
?? ?
? ? if (result) {
?? ? ? ?
? ? ? ? NSString *contents = result.text;
? ? ? ? [selfshowInfoWithMessage:contents andTitle:@"解析成功"];
?? ? ? ?
? ? ? ? NSLog(@"相册图片contents == %@",contents);
?? ? ? ?
? ? } else {
?? ? ? ?
? ? ? ? [selfshowInfoWithMessage:nilandTitle:@"解析失败"];
?? ? ? ?
? ? }
}
?
- (void)showInfoWithMessage:(NSString *)message andTitle:(NSString *)title
{
? ? UIAlertView *alter = [[UIAlertViewalloc] initWithTitle:title message:message delegate:selfcancelButtonTitle:@"确定"otherButtonTitles:nil];
? ? [alter show];
?? ?
}
?
#pragma - mark UIAlertViewDelegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
? ? dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.25f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
?? ? ? ?
? ? ? ? [_captureSessionstartRunning];
? ? });
}
?
?
#pragma - mark - UIImagePickerViewControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
? ? UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"];
?
? ? [selfdismissViewControllerAnimated:YEScompletion:^{
?? ? ? ?
? ? ? ? [self getInfoWithImage:image];
? ? }];
}
?
?
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
? ? [_captureSessionstartRunning];
?? ?
? ? [self.imagePickerControllerdismissViewControllerAnimated:YEScompletion:nil];
?
}
?
//PS:info.plist文件已添加 Localizations 项,并选择语言为 Chinese (simplified),使相册的选择,打开,取消等按键为中文.
- (IBAction)photoPickBtn:(UIButton *)sender {
?? ?
? ? [_captureSessionstopRunning];
?? ?
? ? if (!_imagePickerController) {
?? ? ? ?
? ? ? ? _imagePickerController = [[UIImagePickerControlleralloc] init];
? ? ? ? _imagePickerController.delegate = self;
? ? ? ? _imagePickerController.allowsEditing = YES;
? ? ? ? _imagePickerController.SourceType = UIImagePickerControllerSourceTypePhotoLibrary;
? ? }
?? ?
? ? [selfpresentViewController:self.imagePickerControlleranimated:YEScompletion:nil];
?? ?
}
?
//扫描震动
- (void)playBeep
{
? ? SystemSoundID soundID;
? ? AudioServicesCreateSystemSoundID((__bridgeCFURLRef)[NSURLfileURLWithPath:[[NSBundlemainBundle] pathForResource:@"beep"ofType:@"wav"]], &soundID);
? ? AudioServicesPlaySystemSound(soundID);
?? ?
? ? // Vibrate
? ? AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
}
?
//闪光灯
- (BOOL)isLightOpened
{
? ? AVCaptureDevice *device = [AVCaptureDevicedefaultDeviceWithMediaType: AVMediaTypeVideo];
? ? if (![device hasTorch]) {
? ? ? ? return NO;
? ? }else{
? ? ? ? if ([device torchMode] == AVCaptureTorchModeOn) {
? ? ? ? ? ? return YES;
? ? ? ? } else {
? ? ? ? ? ? return NO;
? ? ? ? }
? ? }
}
?
- (void)openLight:(BOOL)open
{
? ? AVCaptureDevice *device = [AVCaptureDevicedefaultDeviceWithMediaType: AVMediaTypeVideo];//[self.reader.readerView device];
? ? if (![device hasTorch]) {
? ? } else {
? ? ? ? if (open) {
? ? ? ? ? ? // 开启闪光灯
? ? ? ? ? ? if(device.torchMode != AVCaptureTorchModeOn ||
?? ? ? ? ? ? ? device.flashMode != AVCaptureFlashModeOn){
? ? ? ? ? ? ? ? [device lockForConfiguration:nil];
? ? ? ? ? ? ? ? [device setTorchMode:AVCaptureTorchModeOn];
? ? ? ? ? ? ? ? [device setFlashMode:AVCaptureFlashModeOn];
? ? ? ? ? ? ? ? [device unlockForConfiguration];
? ? ? ? ? ? }
? ? ? ? } else {
? ? ? ? ? ? // 关闭闪光灯
? ? ? ? ? ? if(device.torchMode != AVCaptureTorchModeOff ||
?? ? ? ? ? ? ? device.flashMode != AVCaptureFlashModeOff){
? ? ? ? ? ? ? ? [device lockForConfiguration:nil];
? ? ? ? ? ? ? ? [device setTorchMode:AVCaptureTorchModeOff];
? ? ? ? ? ? ? ? [device setFlashMode:AVCaptureFlashModeOff];
? ? ? ? ? ? ? ? [device unlockForConfiguration];
? ? ? ? ? ? }
? ? ? ? }
? ? }
}
?
- (IBAction)openTorchButtonTouched:(id)sender {
?? ?
? ? UIButton *torchBtn = sender;
? ? BOOL isLightOpened = [self isLightOpened];
?? ?
? ? if (isLightOpened) {
//? ? ? ? [torchBtn setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"scan_flash_closed" ofType:@"png"]] forState:UIControlStateNormal];
? ? ? ? [torchBtn setBackgroundColor:[UIColorclearColor]];
? ? ? ? [torchBtn setTitleColor:[UIColorwhiteColor] forState:UIControlStateNormal];
? ? ? ? [self.openTorchButtonsetTitle:@"开灯"forState:UIControlStateNormal];
? ? }
? ? else
? ? {
//? ? ? ? [torchBtn setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"scan_flash_opened" ofType:@"png"]] forState:UIControlStateNormal];
? ? ? ? [torchBtn setBackgroundColor:[UIColorwhiteColor]];
? ? ? ? [torchBtn setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
? ? ? ? [self.openTorchButtonsetTitle:@"关灯"forState:UIControlStateNormal];
? ? }
?? ?
? ? [self openLight:!isLightOpened];
}
?
?
@end
iOS 7以上原生二维码、条码扫描（ZXingObjC相册读取）
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原文地址：http://www.cnblogs.com/allen123/p/4497182.html
