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iOS 7以上原生二维码、条码扫描（ZXingObjC相册读取） // // 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 |
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