Touch ID

//
//  ViewController.m
//  touchID_Demo_oc
//
//  Created by Blake on 14/12/8.
//  Copyright (c) 2014年 Blake. All rights reserved.
//

#import "ViewController.h"
#import <LocalAuthentication/LocalAuthentication.h>
@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)clicked:(UIButton *)sender {
    
    LAContext* lacontext = [LAContext new];
    NSError* error = nil;
    
    if ([lacontext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
        [lacontext evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:@"APP需要验证您的指纹信息" reply:^(BOOL success, NSError *error) {
            
            if (success) {

                UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示" message:@"验证成功" preferredStyle:UIAlertControllerStyleAlert];
                [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:nil]];
                
                [self presentViewController:alert animated:YES completion:nil];
                
            }else{
                UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示" message:@"验证失败" preferredStyle:UIAlertControllerStyleAlert];
                [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:nil]];
                  [self presentViewController:alert animated:YES completion:nil];
            }
            
        }];
        
    }else{
    
        UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示" message:@"设备无法验证,请输入密码" preferredStyle:UIAlertControllerStyleAlert];
        [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:nil]];
          [self presentViewController:alert animated:YES completion:nil];
    
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end