非常感谢大家利用自己宝贵的时间来阅读我的文章 , 今天给大家带来的是一个原生二维码扫描的demo，很久之前写的代码，最近项目要用，想着以后用到的可能性也挺大的，就翻出来整理了个demo出来，如果需要的可以做个参考。如果需要的话希望能帮到你 , 当然, 有任何不妥的地方 欢迎指正。喜欢的可以关注一下我的博客、我的简书
老规矩，先上效果展示
卧槽，这个gif为何如此之大。。。不管了，上demo地址ZQScanTool
用法很简单，把ZQScanTool文件夹拖入到项目中，在需要跳转扫描的时候把ScanViewController给Push出来
ScanViewController *vc = [[ScanViewController alloc] init];[self.navigationController pushViewController:vc animated:YES];
把扫描结果展示控制器ScanResultViewController换成你的调转页
到这里就不用看了，下demo去吧。。。
主要代码：
1、相机设置
- (void)instanceDevice{line_tag = 1872637;//获取摄像设备AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];//创建输入流AVCaptureDeviceInput * input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];//创建输出流AVCaptureMetadataOutput * output = [[AVCaptureMetadataOutput alloc]init];//设置代理 在主线程里刷新[output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];//初始化链接对象session = [[AVCaptureSession alloc]init];//高质量采集率[session setSessionPreset:AVCaptureSessionPresetHigh];if (input) {[session addInput:input];}if (output) {[session addOutput:output];//设置扫码支持的编码格式(如下设置条形码和二维码兼容)NSMutableArray *a = [[NSMutableArray alloc] init];if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeQRCode]) {[a addObject:AVMetadataObjectTypeQRCode];}if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeEAN13Code]) {[a addObject:AVMetadataObjectTypeEAN13Code];}if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeEAN8Code]) {[a addObject:AVMetadataObjectTypeEAN8Code];}if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeCode128Code]) {[a addObject:AVMetadataObjectTypeCode128Code];}output.metadataObjectTypes=a;}AVCaptureVideoPreviewLayer * layer = [AVCaptureVideoPreviewLayer layerWithSession:session];layer.videoGravity=AVLayerVideoGravityResizeAspectFill;layer.frame=self.view.layer.bounds;[self.view.layer insertSublayer:layer atIndex:0];[self setOverlayPickerView];[session addObserver:self forKeyPath:@"running" options:NSKeyValueObservingOptionNew context:nil];//开始捕获[session startRunning];}
2、扫描UI
- (void)setOverlayPickerView{//左侧的viewUIImageView *leftView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 30, ScreenHeight)];leftView.alpha = 0.5;leftView.backgroundColor = [UIColor blackColor];[self.view addSubview:leftView];//右侧的viewUIImageView *rightView = [[UIImageView alloc] initWithFrame:CGRectMake(ScreenWidth-30, 0, 30, ScreenHeight)];rightView.alpha = 0.5;rightView.backgroundColor = [UIColor blackColor];[self.view addSubview:rightView];//最上部viewUIImageView* upView = [[UIImageView alloc] initWithFrame:CGRectMake(30, 0, ScreenWidth - 60, (self.view.center.y-(ScreenWidth-60)/2))];upView.alpha = 0.5;upView.backgroundColor = [UIColor blackColor];[self.view addSubview:upView];UIButton *cancleBtn = [[UIButton alloc] initWithFrame:CGRectMake(5, 20, 44, 44)];[cancleBtn setImage:[UIImage imageNamed:@"nav_backButton_image"] forState:UIControlStateNormal];[cancleBtn addTarget:self action:@selector(cancleBtnClick) forControlEvents:UIControlEventTouchUpInside];[self.view addSubview:cancleBtn];//底部viewUIImageView * downView = [[UIImageView alloc] initWithFrame:CGRectMake(30, (self.view.center.y+(ScreenWidth-60)/2), (ScreenWidth-60), (ScreenHeight-(self.view.center.y-(ScreenWidth-60)/2)))];downView.alpha = 0.5;downView.backgroundColor = [UIColor blackColor];[self.view addSubview:downView];UIImageView *centerView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, ScreenWidth-60, ScreenHeight-60)];centerView.center = self.view.center;centerView.image = [UIImage imageNamed:@"scan_circle"];centerView.contentMode = UIViewContentModeScaleAspectFit;centerView.backgroundColor = [UIColor clearColor];[self.view addSubview:centerView];UIImageView *line = [[UIImageView alloc] initWithFrame:CGRectMake(30, CGRectGetMaxY(upView.frame), ScreenWidth-60, 2)];line.tag = line_tag;line.image = [UIImage imageNamed:@"scan_line"];line.contentMode = UIViewContentModeScaleAspectFill;line.backgroundColor = [UIColor clearColor];[self.view addSubview:line];UILabel *msg = [[UILabel alloc] initWithFrame:CGRectMake(30, CGRectGetMinY(downView.frame), ScreenWidth-60, 60)];msg.backgroundColor = [UIColor clearColor];msg.textColor = [UIColor whiteColor];msg.textAlignment = NSTextAlignmentCenter;msg.font = [UIFont systemFontOfSize:16];msg.text = @"将二维码放入框内,即可自动扫描";[self.view addSubview:msg];}
3、扫描动画
/**** 监听扫码状态-修改扫描动画**/- (void)observeValueForKeyPath:(NSString *)keyPathofObject:(id)objectchange:(NSDictionary *)changecontext:(void *)context{if ([object isKindOfClass:[AVCaptureSession class]]) {BOOL isRunning = ((AVCaptureSession *)object).isRunning;if (isRunning) {[self addAnimation];}else{[self removeAnimation];}}}
* 添加扫码动画
- (void)addAnimation{UIView *line = [self.view viewWithTag:line_tag];line.hidden = NO;CABasicAnimation *animation = [ScanViewController moveYTime:2 fromY:[NSNumber numberWithFloat:0] toY:[NSNumber numberWithFloat:ScreenWidth-60-2] rep:OPEN_MAX];[line.layer addAnimation:animation forKey:@"LineAnimation"];}
*去除扫码动画
- (void)removeAnimation{UIView *line = [self.view viewWithTag:line_tag];[line.layer removeAnimationForKey:@"LineAnimation"];line.hidden = YES;}
+ (CABasicAnimation *)moveYTime:(float)time fromY:(NSNumber *)fromY toY:(NSNumber *)toY rep:(int)rep{CABasicAnimation *animationMove = [CABasicAnimation animationWithKeyPath:@"transform.translation.y"];[animationMove setFromValue:fromY];[animationMove setToValue:toY];animationMove.duration = time;animationMove.delegate = self;animationMove.repeatCount = rep;animationMove.fillMode = kCAFillModeForwards;animationMove.removedOnCompletion = NO;animationMove.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];return animationMove;}
3、扫描结果
-(void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection{if (metadataObjects.count>0) {[session stopRunning];NSURL *url=[[NSBundle mainBundle]URLForResource:@"scanSuccess.wav" withExtension:nil];//2.加载音效文件，创建音效ID（SoundID,一个ID对应一个音效文件）SystemSoundID soundID=8787;AudioServicesCreateSystemSoundID((__bridge CFURLRef)url, &soundID);//3.播放音效文件//下面的两个函数都可以用来播放音效文件，第一个函数伴随有震动效果AudioServicesPlayAlertSound(soundID);AudioServicesPlaySystemSound(8787);AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex :0];//输出扫描字符串NSString *data = metadataObject.stringValue;ScanResultViewController *resultVC = [[ScanResultViewController alloc] init];resultVC.title = @"扫描结果";resultVC.result = data;[self.navigationController pushViewController:resultVC animated:YES];}}
@#%￥￥#&……￥#@！#！@￥@#%￥￥！@#！@#！说了不用看了，恩，就这么多了。好用别忘了点赞！
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