二维码扫描 + 指纹识别

Demo

//1.系统
import AVFoundation/AVFoundation.h

//ZBar
//ZXing

//指纹识别
import LocalAuthentication/LocalAuthentication.h

@interface ViewController ()

@property (nonatomic,strong) AVCaptureSession *seession;

@end

@implementation ViewController

-(void)QRCode
{
self.seession = [[AVCaptureSession alloc] init];

//设置会话的质量
self.seession.sessionPreset = AVCaptureSessionPresetHigh;

//初始化设备:摄像头
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

//增加输入设备
AVCaptureDeviceInput *deviceInput = [[AVCaptureDeviceInput alloc] initWithDevice:device error:nil];

[self.seession addInput:deviceInput];

//添加输出
AVCaptureMetadataOutput *outPut = [[AVCaptureMetadataOutput alloc] init];

[self.seession addOutput:outPut];

//设置代理
[outPut setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];

//设置输出类型
//AVMetadataObjectTypeQRCode  二维码
[outPut setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode]];

//设置扫描区域
AVCaptureVideoPreviewLayer *layer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.seession];

layer.frame = CGRectMake(100, 100, 200, 200);

layer.videoGravity = AVLayerVideoGravityResizeAspectFill;

[self.view.layer insertSublayer:layer atIndex:0];

//开启扫描
[self.seession startRunning];

}

• (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.

  LAContext *context = [[LAContext alloc] init];

  //判断是否支持指纹识别
  if([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:nil])
  {
  [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:@”登录” reply:^(BOOL success, NSError * _Nullable error) {

      if(success)
      {
          NSLog(@"验证成功");
      }
      else
      {
          NSLog(@"验证失败");
      }
  }];
  

  }
  else
  {
  NSLog(@”不支持指纹验证”);
  }
  }

• (void)captureOutput:(AVCaptureOutput )captureOutput didOutputMetadataObjects:(NSArray )metadataObjects fromConnection:(AVCaptureConnection *)connection
  {
  NSLog(@”扫描成功 %@”,metadataObjects);

  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[metadataObjects[0] stringValue]]];

  [self.seession stopRunning];
  }