指纹解锁很简单,导入头文件#import "LocalAuthentication/LocalAuthentication.h",验证手机系统是否支持指纹解锁 iOS 8以后才行,验证本手机是否开启了指纹识别,是否录入了指纹等
指纹登录验证:LoginViewController
//
// LoginViewController.m
// 指纹验证
//
// Created by hj on 2018/1/31.
// Copyright © 2018年 hj. All rights reserved.
//
#import "LoginViewController.h"
#import "LocalAuthentication/LocalAuthentication.h"
@interface LoginViewController ()
@end
@implementation LoginViewController
- (void)viewDidLoad {
[super viewDidLoad];
if ([UIDevice currentDevice].systemVersion.floatValue < 8.0) {//8.0以后才支持指纹
return;
}
UIButton * btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = CGRectMake(0, 0, 160, 50);
btn.center = self.view.center;
[btn setTitle:@"点击一下,指纹登录" forState:0];
[btn setTitleColor:[UIColor redColor] forState:0];
btn.backgroundColor = [UIColor yellowColor];
btn.layer.borderColor = [UIColor orangeColor].CGColor;
btn.layer.borderWidth = 2;
btn.layer.cornerRadius = 20;
[btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
}
- (void)btnClick{
[self fingerprintVerification];
}
- (void)fingerprintVerification
{
//创建LAContext
LAContext* context = [[LAContext alloc] init];
NSError* error = nil;
if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
//支持指纹验证
[context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:@"请验证已有指纹" reply:^(BOOL success, NSError *error) {
if (success) {
//验证成功，主线程处理UI
NSLog(@"成功啦");
//用户选择输入密码，切换主线程处理
dispatch_async(dispatch_get_main_queue(), ^{
[self showMessage:@"指纹登录成功!"];
});
}
else
{
NSLog(@"%@",error.localizedDescription);
switch (error.code) {
case LAErrorSystemCancel:
{
[self showMessage:@"系统取消授权，如其他APP切入"];
//系统取消授权，如其他APP切入
break;
}
case LAErrorUserCancel:
{
//用户取消验证Touch ID
[self showMessage:@"用户取消验证Touch ID"];
break;
}
case LAErrorAuthenticationFailed:
{
//授权失败
[self showMessage:@"授权失败"];
break;
}
case LAErrorPasscodeNotSet:
{
//系统未设置密码
[self showMessage:@"系统未设置密码"];
break;
}
case LAErrorBiometryNotAvailable:
{
//设备Touch ID不可用，例如未打开
[self showMessage:@"设备Touch ID不可用，例如未打开"];
break;
}
case LAErrorBiometryNotEnrolled:
{
//设备Touch ID不可用，用户未录入
[self showMessage:@"设备Touch ID不可用，用户未录入"];
break;
}
case LAErrorUserFallback:
{
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
//用户选择输入密码，切换主线程处理
[self showMessage:@"用户选择输入密码，切换主线程处理"];
}];
break;
}
default:
{
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
//其他情况，切换主线程处理
[self showMessage:@"其他情况，切换主线程处理"];
}];
break;
}
}
}
}];
}
else
{
//不支持指纹识别，LOG出错误详情
NSLog(@"不支持指纹识别");
switch (error.code) {
case LAErrorBiometryNotEnrolled:
{
NSLog(@"TouchID is not enrolled");
[self showMessage:@"TouchID is not enrolled"];
break;
}
case LAErrorPasscodeNotSet:
{
NSLog(@"A passcode has not been set");
[self showMessage:@"A passcode has not been set"];
break;
}
default:
{
NSLog(@"TouchID not available");
[self showMessage:@"TouchID not available"];
break;
}
}
NSLog(@"error : %@",error.localizedDescription);
}
}
-(void)showMessage:(NSString *)msg{
UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"提示" message:msg delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
[alert show];
}
@end
