iOS8之后苹果发布了指纹识别的功能,通过touch ID来识别用户,做用户授权,主要是依赖于LocalAuthentication库
指纹识别:一判断设备是否支持指纹识别功能
二识别指纹,成功后做相应的动作,失败后提醒用户指纹识别失败
先引入#import <LocalAuthentication/LocalAuthentication.h>
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LAContext *context = [[LAContext alloc] init]; NSError *error = nil; //验证是否支持指纹识别 if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) { NSLog(@ "支持指纹识别的应用" ); //验证身份 [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:NSLocalizedString(@ "需要指纹来验证你的身份" , @ "hello" ) reply:^(BOOL success, NSError *error) { if (success) { NSLog(@ "成功" ); } else { switch (error.code) { case LAErrorUserCancel: NSLog(@ "用户取消了授权 - %@" , error.localizedDescription); break ; case LAErrorUserFallback: NSLog(@ "用户点击了“输入密码”按钮 - %@" , error.localizedDescription); break ; case LAErrorAuthenticationFailed: NSLog(@ "您已授权失败3次 - %@" , error.localizedDescription); break ; case LAErrorTouchIDLockout: NSLog(@ "指纹被锁定 - %@" , error.localizedDescription); break ; case LAErrorSystemCancel: NSLog(@ "应用程序进入后台 - %@" , error.localizedDescription); break ; default : NSLog(@ "++%@--%zd" , error.localizedDescription, error.code); break ; } } }]; } else { switch (error.code) { case LAErrorPasscodeNotSet: NSLog(@ "未设置密码 - %@" , error.localizedDescription); break ; case LAErrorTouchIDNotEnrolled: NSLog(@ "未注册 Touch ID - %@" , error.localizedDescription); break ; case kLAErrorTouchIDNotAvailable: NSLog(@ "该设备不支持 Touch ID - %@" , error.localizedDescription); break ; default : NSLog(@ "--%@--%zd" , error.localizedDescription, error.code); break ; } } |
原文链接:http://www.cnblogs.com/liyy2015/archive/2016/12/13/6169880.html