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简书、我的博客
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
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view
UIImageView *leftView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 30, ScreenHeight)];
leftView.alpha = 0.5;
leftView.backgroundColor = [UIColor blackColor];
[self.view addSubview:leftView];
//右侧的view
UIImageView *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view
UIImageView* 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view
UIImageView * 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 *)keyPath
ofObject:(id)object
change:(NSDictionary *)change
context:(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];
}
}
@#%￥￥#&……￥#@！#！@￥@#%￥￥！@#！@#！恩，就这么多了。好用别忘了点赞！
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