touch id 开发

min platform : 8.0

#import <LocalAuthentication/LocalAuthentication.h>

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

NSError *error = nil;

if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {

[context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:@"指纹解锁" reply:^(BOOL success, NSError *error) {

if (success) {

[[NSOperationQueue mainQueue] addOperationWithBlock:^{

self.labelLevel.text = @"指纹验证成功";

}];

}

else

{

NSLog(@"%@",[error description]);

}

}];

}