//導(dǎo)入本地授權(quán)
#import <LocalAuthentication/LocalAuthentication.h>

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    //1.創(chuàng)建上下文
    LAContext *context = [[LAContext alloc] init];
    //2.判斷指紋識別是否可用
    /*
     LAPolicyDeviceOwnerAuthenticationWithBiometrics kLAPolicyDeviceOwnerAuthenticationWithBiometrics
     */
    if([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:nil]){
        [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:@"按住Home鍵驗證" reply:^(BOOL success, NSError * _Nullable error) {
            if(error){
                //-1表示連續(xù)錯誤3次
                //-8再次錯誤
                //-3點擊輸入密碼
                NSLog(@"%zd",error.code);
            }
            if(success){
                NSLog(@"驗證成功");
            }
        }];
    }
}