iOS指纹验证TouchID应用学习教程

#import "AppDelegate.h"#import "ViewController.h"@interface AppDelegate ()@end@implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //appdelegate _window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds]; _window.backgroundColor = [UIColor whiteColor]; [_window makeKeyAndVisible]; ViewController *vc = [[ViewController alloc]init]; UINavigationController *na = [[UINavigationController alloc]initWithRootViewController:vc]; _window.rootViewController = na; return YES;}

 -canEvaluatePolicy:error: //-(BOOL)canEvaluatePolicy:(LAPolicy)policy error:(NSError * __autoreleasing *)error __attribute__((swift_error(none))); -evaluatePolicy:localizedReason:reply: //- (void)evaluatePolicy:(LAPolicy)policy localizedReason:(NSString *)localizedReason reply:(void(^)(BOOL success, NSError * __nullable error))reply;

- (void)viewDidLoad { [super viewDidLoad]; self.title = @"TouchIDSimpleDemoOne"; LAContext *context = [[LAContext alloc]init]; NSError *error; NSString *result = @"需要你身份验证呢";  if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) { [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:result reply:^(BOOL success, NSError *error) { if (success) { //验证成功，主线程处理UI //这个地方呢就是写一些验证成功之后需要做些什么事情的代码。 NSLog(@"验证成功"); } else { //以下是一些验证失败的原因啥的 NSLog(@"%@",error.localizedDescription); switch (error.code) {  case LAErrorSystemCancel:  {  NSLog(@"切换到其他APP，系统取消验证Touch ID");  //切换到其他APP，系统取消验证Touch ID  break;  }  case LAErrorUserCancel:  {  NSLog(@"用户取消验证Touch ID");  //用户取消验证Touch ID  break;  }  case LAErrorUserFallback:  {  NSLog(@"用户选择输入密码");  [[NSOperationQueue mainQueue] addOperationWithBlock:^{  //用户选择其他验证方式，切换主线程处理  }];  break;  }  default:  {  NSLog(@"LAErrorAuthenticationFailed，授权失败");  //授权失败  [[NSOperationQueue mainQueue] addOperationWithBlock:^{  //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 switch (error.code) { case LAErrorTouchIDNotEnrolled: { NSLog(@"设备Touch ID不可用，用户未录入"); break; } case LAErrorPasscodeNotSet: { NSLog(@"系统未设置密码"); break; } case LAErrorTouchIDNotAvailable: { NSLog(@"设备Touch ID不可用，例如未打开"); break; } default: { NSLog(@"系统未设置密码"); break; } } NSLog(@"%@",error.localizedDescription); } }

//指纹验证返回值typedef NS_ENUM(NSInteger, LAError){ /// Authentication was not successful, because user failed to provide valid credentials. LAErrorAuthenticationFailed = kLAErrorAuthenticationFailed, /// Authentication was canceled by user (e.g. tapped Cancel button). LAErrorUserCancel = kLAErrorUserCancel, /// Authentication was canceled, because the user tapped the fallback button (Enter Password). LAErrorUserFallback = kLAErrorUserFallback, /// Authentication was canceled by system (e.g. another application went to foreground). LAErrorSystemCancel = kLAErrorSystemCancel, /// Authentication could not start, because passcode is not set on the device. LAErrorPasscodeNotSet = kLAErrorPasscodeNotSet, /// Authentication could not start, because Touch ID is not available on the device. LAErrorTouchIDNotAvailable = kLAErrorTouchIDNotAvailable, /// Authentication could not start, because Touch ID has no enrolled fingers. LAErrorTouchIDNotEnrolled = kLAErrorTouchIDNotEnrolled, /// Authentication was not successful, because there were too many failed Touch ID attempts and /// Touch ID is now locked. Passcode is required to unlock Touch ID, e.g. evaluating /// LAPolicyDeviceOwnerAuthenticationWithBiometrics will ask for passcode as a prerequisite. LAErrorTouchIDLockout NS_ENUM_AVAILABLE(10_11, 9_0) = kLAErrorTouchIDLockout, /// Authentication was canceled by application (e.g. invalidate was called while /// authentication was in progress). LAErrorAppCancel NS_ENUM_AVAILABLE(10_11, 9_0) = kLAErrorAppCancel, /// LAContext passed to this call has been previously invalidated. LAErrorInvalidContext NS_ENUM_AVAILABLE(10_11, 9_0) = kLAErrorInvalidContext} NS_ENUM_AVAILABLE(10_10, 8_0);

- (void)viewDidLoad { [super viewDidLoad]; //初始化 WJTouchID *touchid = [[WJTouchID alloc]init]; [touchid startWJTouchIDWithMessage:WJNotice(@"自定义信息", @"The Custom Message") fallbackTitle:WJNotice(@"", @"Fallback Title") delegate:self]; self.touchID = touchid;}

@required //TouchID验证成功- (void)WJTouchIDAuthorizeSuccess; //TouchID验证失败- (void)WJTouchIDAuthorizeFailure;@optional //当前设备不支持指纹识别- (void)WJTouchIDIsNotSupport; //当前软件被挂起取消了授权(如突然来了电话,应用进入前台)- (void)WJTouchIDAuthorizeErrorAppCancel; //取消TouchID验证 (用户点击了取消)- (void)WJTouchIDAuthorizeErrorUserCancel; //在TouchID对话框中点击输入密码按钮- (void)WJTouchIDAuthorizeErrorUserFallback; //在验证的TouchID的过程中被系统取消 例如突然来电话、按了Home键、锁屏...- (void)WJTouchIDAuthorizeErrorSystemCancel; //无法启用TouchID,设备没有设置密码- (void)WJTouchIDAuthorizeErrorPasscodeNotSet; //多次连续使用Touch ID失败，Touch ID被锁，需要用户输入密码解锁- (void)WJTouchIDAuthorizeErrorTouchIDLockout; //当前软件被挂起取消了授权 (授权过程中,LAContext对象被释)- (void)WJTouchIDAuthorizeErrorInvalidContext; //设备没有录入TouchID,无法启用TouchID- (void)WJTouchIDAuthorizeErrorTouchIDNotEnrolled; //该设备的TouchID无效- (void)WJTouchIDAuthorizeErrorTouchIDNotAvailable;