Corebluetooth-touchid applications

Support Systems and Models:

The minimum supported models for the IOS system's fingerprint recognition feature are the iPhone 5s minimum supported iOS 8 system,

Although iOS 7系统的5s the installation model can use the system-provided fingerprint unlock function, but because it is API not open, so theoretically third-party software is not available.

Dependency Framework

LocalAuthentication.framework#import <LocalAuthentication/LocalAuthentication.h>

Precautions

When making the iOS 8以下 version adaptation, be sure to do API验证 so to avoid invoking the associated API to cause a crash.

if(iOS8){xxx} // 系统版本验证if ([myContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&authError])

Using classes

LAContextFingerprint validation Action Object

Operation Flow

• To determine the system version, IOS 8 and later version execution-(void) Authenticateuser method,
• Method automatically determines whether the device supports and turns on touch ID.

code example

1 #import "ViewController.h"2 #import "mbprogresshud+mj.h"3 #import<LocalAuthentication/LocalAuthentication.h>4 5 #defineIOS8 ([Uidevice currentdevice].systemversion.doublevalue >= 8.0)6 7 8 @interfaceViewcontroller ()9-(Ibaction) Clickmethod: (ID) sender;Ten  One @end A  - @implementationViewcontroller -  the- (void) Viewdidload { - [Super Viewdidload]; -     //additional setup after loading the view, typically from a nib. - } +  -  +-(Ibaction) Clickmethod: (ID) Sender { A      at     if(!IOS8) {//iOS8 later support TouchID -         //HUD Hints -[Mbprogresshud ShowError:@"The current system does not support TouchID"]; -         return; -     } -      in     //Call TouchID - [self touchidshow]; to      + } -  the- (void) Touchidshow * { $     //Create a fingerprint check objectPanax NotoginsengLacontext *context =[[Lacontext alloc] init]; -      theNserror *error1 =Nil; +     if([Context Canevaluatepolicy:lapolicydeviceownerauthenticationwithbiometrics error:&Error1]) { A         //Popup Validation the[Context Evaluatepolicy:lapolicydeviceownerauthenticationwithbiometrics Localizedreason:@"TouchID Error"reply:^ (BOOL success, Nserror *_nullable Error) { +             -             if(success) {//Validation Successful $NSLog (@"Success"); $}Else{ -                 Switch(error.code) { -                      CaseLaerrorsystemcancel: the                     { -NSLog (@"authentication was cancelled by the system");Wuyi                         //Switch to another app, the system cancels the verification touch ID the                          Break; -                     } Wu                      CaseLaerrorusercancel: -                     { AboutNSLog (@"authentication was cancelled by the user"); $                         //user cancels authentication touch ID -                          Break; -                     } -                      CaseLaerroruserfallback: A                     { +NSLog (@"User selected to enter custom password"); the[[Nsoperationqueue Mainqueue] addoperationwithblock:^{ -                             //the user chooses to enter the password, switches the main thread processing $                         }]; the                          Break; the                     } the                     default: the                     { -[[Nsoperationqueue Mainqueue] addoperationwithblock:^{ in                             //other cases, switch main thread processing the                         }]; the                          Break; About                     } the                 } theNSLog (@"\n%s\n---line=%d\n--error=%@\n", __function__, __line__, error.localizeddescription); the             } +         }]; -          the}Else{Bayi         Switch(error1.code) { the              Caselaerrortouchidnotenrolled: theNSLog (@"laerrortouchidnotenrolled"); -                  Break; -                  the                  the              CaseLaerrorpasscodenotset: theNSLog (@"Laerrorpasscodenotset");//The Showpasscoderesetalert method is triggered here the                  Break; -                  the             default: theNSLog (@"Touch ID is unaviliable"); the                  Break;94         } the     } the     /* the typedef ns_enum (Nsinteger, Laerror)98      { About //Authorization failed - laerrorauthenticationfailed = klaerrorauthenticationfailed,101      102 //user cancels Touch ID authorization103 laerrorusercancel = Klaerrorusercancel,104       the //user chooses to enter password106 laerroruserfallback = Klaerroruserfallback,107      108 //System de-authorization (such as other app cut-in)109 laerrorsystemcancel = Klaerrorsystemcancel, the      111 //System not set password the Laerrorpasscodenotset = Klaerrorpasscodenotset,113       the //device Touch ID not available, e.g. not open the laerrortouchidnotavailable = klaerrortouchidnotavailable, the      117 //device Touch ID not available, user not input118 laerrortouchidnotenrolled = klaerrortouchidnotenrolled,119 } ns_enum_available (10_10, 8_0); -      121      */122     123 [self dealwitherror:error1];124 } the 126 127- (void) Dealwitherror: (Nserror *) Error - {129     if(Error) { theNSLog (@"error =%@", error.localizeddescription);131     } the }133 @end

Corebluetooth-touchid applications