面部识别

#import “ViewController.h”
#import “one1ViewController.h”
#import <LocalAuthentication/LocalAuthentication.h>
@interface ViewController ()
@property (nonatomic,strong)LAContext *laCtx;//TouchID管理

@end

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  //初始化
  self.laCtx=[[LAContext alloc]init];

}

• (IBAction)gotobutton1:(id)sender {
  //判断是否可以使用TouchID
  if([self.laCtx canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:nil]){
  //申请授权
  [self.laCtx evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:@“使用您的FaveID/TouchID便如进入下一个视图” reply:^(BOOL success, NSError * _Nullable error) {
  if(success){
  dispatch_async(dispatch_get_main_queue(), ^{
  one1ViewController *one=[one1ViewController new];
  [self presentViewController:one animated:YES completion:nil];
  });

        }
    }];
  

  }else{
  UIAlertController *alert=[UIAlertController alertControllerWithTitle:@“提示” message:@“不支持TouchID/FaceID” preferredStyle:UIAlertControllerStyleAlert];
  [alert addAction:[UIAlertAction actionWithTitle:@“确定” style:UIAlertActionStyleCancel handler:nil]];
  [self presentViewController:alert animated:YES completion:nil];
  }

  one1ViewController *one=[one1ViewController new];
  [self presentViewController:one animated:YES completion:nil];

}

@end