IOS 指紋識别

指紋識别必須ios8 以上真機，面部識别據說同一套API 沒有支援面部識别的機器，沒有測試，直接貼代碼了，注釋比較清晰，關鍵點在于業務邏輯，由于指紋識别隻是類似授權自動登入，是以那些賬戶密碼。必須存儲，在授權成功自動登入，存儲密碼可參考keychain

ZbTouchManager.h

//
//  ZbTouchManager.h
//  TestFFmpegDemo
//
//  Created by syStudio sy on 2019/4/22.
//  Copyright © 2019 syStudio sy. All rights reserved.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN
typedef  enum _LOCALTOUCHIDRESULT{
    LOCALTOUCHID_NOT_SUPPORT = 0 ,/*裝置不支援*/
    LOCALTOUCHID_SUCCESS,/*成功*/
    LOCALTOUCHID_FAILD,/*失敗*/
    LOCALTOUCHID_UserCancel,/*使用者取消*/
    LOCALTOUCHID_UserFallback,/*使用者選擇輸入密碼*/
    LOCALTOUCHID_SystemCancel,/*系統來電等導緻*/
    LOCALTOUCHID_PasscodeNotSet,/*使用者沒有設定密碼*/
    LOCALTOUCHID_NOT_Enrolled,/*使用者沒有設定touchID*/
    LOCALTOUCHID_NOT_Available,/*使用者touchiD無效*/
    LOCALTOUCHID_Other_Reason,/*其它原因*/
    
}LocalAuthent_result;


@interface ZbTouchManager : NSObject

+(id)sharedInstance;
-(int)checkTouchIDActionWithComplete:(void(^)(NSDictionary*resultDic,LocalAuthent_result result))callback;
@end

NS_ASSUME_NONNULL_END

           

ZbTouchManager.m

//
//  ZbTouchManager.m
//  TestFFmpegDemo
//
//  Created by syStudio sy on 2019/4/22.
//  Copyright © 2019 syStudio sy. All rights reserved.
//

#import "ZbTouchManager.h"
#import <LocalAuthentication/LocalAuthentication.h>
#define RetDicReasonKey @"ZbResultDscStr"
@implementation ZbTouchManager
static ZbTouchManager *instance = nil;
+(id)sharedInstance{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [[ZbTouchManager alloc]init];
    });
    return instance;
}
-(int)checkTouchIDActionWithComplete:(void(^)(NSDictionary*resultDic,LocalAuthent_result result))callback{
    NSMutableDictionary *retDic = [NSMutableDictionary dictionary];
    if(NSFoundationVersionNumber < NSFoundationVersionNumber_iOS_8_0){
        [retDic setValue:RetDicReasonKey forKey:@"版本低于8.0 不支援Touch ID"];
        callback(retDic,LOCALTOUCHID_NOT_SUPPORT);
        return LOCALTOUCHID_NOT_SUPPORT;
    }
    LAContext *context = [[LAContext alloc]init];
//    指紋認證錯誤後的第二個按鈕文字（不寫預設為“輸入密碼”）
    context.localizedFallbackTitle = @"密碼";
    if (@available(iOS 10.0.0,*)) {
        context.localizedCancelTitle = @"取消";
    }
    NSError *error = nil;
    if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthentication error:&error]) {
        [context evaluatePolicy:LAPolicyDeviceOwnerAuthentication localizedReason:@"home 鍵指紋識别" reply:^(BOOL success, NSError * _Nullable error) {
            if (success) {
                dispatch_async(dispatch_get_main_queue(), ^{
                    [retDic setValue:@"指紋識别驗證成功" forKey:RetDicReasonKey];
                    callback(retDic,LOCALTOUCHID_SUCCESS);
                });
            }else if(error){
                switch (error.code) {
                    case LAErrorAuthenticationFailed:
                         [retDic setValue:@"指紋識别驗證失敗" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_FAILD);
                        break;
                    case LAErrorUserCancel:
                         [retDic setValue:@"使用者取消" forKey:RetDicReasonKey];
                       
                        callback(retDic,LOCALTOUCHID_UserCancel);
                        break;
                        case LAErrorUserFallback:
                        [retDic setValue:@"使用者不使用TouchID 選擇搜懂輸入密碼" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_UserFallback);
                        break;
                    case LAErrorSystemCancel:
                         [retDic setValue:@"系統取消 比如遇到來電，等" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_SystemCancel);
                        break;
                    case LAErrorPasscodeNotSet:
                        [retDic setValue:@"使用者沒有設定密碼" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_PasscodeNotSet);
                        break;
                    case LAErrorTouchIDNotEnrolled:
                        [retDic setValue:@"使用者沒有設定touchID" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_NOT_Enrolled);
                        NSLog(@"使用者沒有設定touchID");
                        break;
                    case LAErrorTouchIDNotAvailable:
                        [retDic setValue:@"使用者touchiD 無效" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_NOT_Available);
                        break;
                    default:
                        [retDic setValue:@"其它未知原因" forKey:RetDicReasonKey];
                        callback(retDic,LOCALTOUCHID_Other_Reason);
                        break;
                }
            }
        }];
    }else{
        [retDic setValue:@"裝置不支援touchiID" forKey:RetDicReasonKey];
        callback(retDic,LOCALTOUCHID_NOT_SUPPORT);
    }
    return LOCALTOUCHID_NOT_SUPPORT;
}
@end

           

參考文章