直接上代码，就不多废话了
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//
// ViewController.m
// QRCode
//
// Created by chenchen on 15/7/30.
// Copyright (c) 2015年 BSY. All rights reserved.
//
#import <AVFoundation/AVFoundation.h>
#import "ViewController.h"
@interface ViewController ()<AVCaptureMetadataOutputObjectsDelegate>
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
AVCaptureSession *session = [[AVCaptureSession alloc] init];
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error = nil;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device
error:&error];
if (input) {
[session addInput:input];
} else {
NSLog(@"Error: %@", error);
}
AVCaptureMetadataOutput *output = [[AVCaptureMetadataOutput alloc] init];
//设置扫码支持的编码格式(如下设置条形码和二维码兼容)
[output setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode,AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode128Code]];
[output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
[session addOutput:output];
[session startRunning];
}
#pragma mark - AVCaptureMetadataOutputObjectsDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput
didOutputMetadataObjects:(NSArray *)metadataObjects
fromConnection:(AVCaptureConnection *)connection
{
NSString *QRCode = nil;
for (AVMetadataObject *metadata in metadataObjects) {
if ([metadata.type isEqualToString:AVMetadataObjectTypeQRCode]) {
// This will never happen; nobody has ever scanned a QR code... ever
QRCode = [(AVMetadataMachineReadableCodeObject *)metadata stringValue];
break;
}
}
NSLog(@"QR Code: %@", QRCode);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
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