指纹验证
in 知识 on Object-c
/*
操作系统最低为iOS8.0
做iOS8.0下版本适配时，务必进行API验证，避免调用相关API引起崩溃。
引入依赖框架：#import <LocalAuthentication/LocalAuthentication.h>
*/
#import "ViewController.h"
#import <Masonry.h>
#import <LocalAuthentication/LocalAuthentication.h>
@interface ViewController ()
@property (nonatomic ,strong) UIButton *touchBtn;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor greenColor];
[self.view addSubview:self.touchBtn];
__weak typeof (self) weakSelf = self;
[self.touchBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.center.equalTo(weakSelf.view);
make.size.mas_equalTo(CGSizeMake(80, 80));
}];
}
-(void)setLocalAuthentication
{
LAContext * context = [[LAContext alloc] init];
NSError * error = nil;
NSString * result = @"通过home键验证已有手机指纹";
//首先使用canEvaluatePolicy 判断设备支持状态
if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error])
{
//支持指纹验证
[context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:result reply:^(BOOL success, NSError *error) {
if (success)
{
//验证成功
NSLog(@"-----------验证成功");
[self setAlertViewWithTitle:@"验证成功"];
}
else
{
NSLog(@"%@",error.localizedDescription);
switch (error.code)
{
case LAErrorSystemCancel:
{
NSLog(@"切换到其他APP，系统取消验证Touch ID");
[self setAlertViewWithTitle:@"系统取消"];
break;
}
case LAErrorUserCancel:
{
NSLog(@"用户取消验证Touch ID");
[self setAlertViewWithTitle:@"用户取消验证"];
break;
}
case LAErrorUserFallback:
{
NSLog(@"用户选择其他验证方式，切换主线程处理");
[self setAlertViewWithTitle:@"用户选择其他验证方式"];
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
}];
break;
}
default:
{
NSLog(@"其他情况，切换主线程处理");
[self setAlertViewWithTitle:@"其他情况"];
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
}];
break;
}
}
}
}];
}
else
{
//不支持指纹识别，LOG出错误详情
switch (error.code)
{
case LAErrorTouchIDNotEnrolled:
{
NSLog(@"TouchID is not enrolled");
break;
}
case LAErrorPasscodeNotSet:
{
NSLog(@"A passcode has not been set");
break;
}
default:
{
NSLog(@"TouchID not available");
break;
}
}
NSLog(@"不支持指纹识别");
[self setAlertViewWithTitle:@"不支持指纹识别"];
}
}
-(void)setAlertViewWithTitle:(NSString *)title
{
if ([[UIDevice currentDevice].systemVersion floatValue] >=9.0) {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示" message:title preferredStyle: UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}]];
[self presentViewController:alert animated:true completion:nil];
}else{
UIAlertView *alt = [[UIAlertView alloc] initWithTitle:@"提示" message:title delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];
[alt show];
}
}
-(UIButton *)touchBtn
{
if (!_touchBtn) {
_touchBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[_touchBtn setTitle:@"指纹验证" forState:UIControlStateNormal];
[_touchBtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
[_touchBtn setBackgroundColor:[UIColor yellowColor]];
[_touchBtn addTarget:self action:@selector(setLocalAuthentication) forControlEvents:UIControlEventTouchUpInside];
}
return _touchBtn;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end