ios8中如何获取指纹数据？

Question

为此，我使用 La Authentication 框架，但借助它我没有指纹数据，它只是 returns 我的布尔值，即 true 和 false，所以它无法帮助我想要指纹数据变量所以我会进一步处理它。帮帮我。

以下是示例代码，

func authenticateUser() {
  ...

  // Check if the device can evaluate the policy.
  if context.canEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, error: &error) {
    [context .evaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, localizedReason: reasonString, reply: { (success: Bool, evalPolicyError: NSError?) -> Void in

      if success {

      }
      else {
        // If authentication failed then show a message to the console with a short description.
        // In case that the error is a user fallback, then show the password alert view.
        println(evalPolicyError?.localizedDescription)

        switch evalPolicyError!.code {
          case LAError.SystemCancel.toRaw():
            println("Authentication was cancelled by the system")

          case LAError.UserCancel.toRaw():
            println("Authentication was cancelled by the user")

          case LAError.UserFallback.toRaw():
            println("User selected to enter custom password")
            NSOperationQueue.mainQueue().addOperationWithBlock({ () -> Void in
              self.showPasswordAlert()
            })

          default:
            println("Authentication failed")
            NSOperationQueue.mainQueue().addOperationWithBlock({ () -> Void in
              self.showPasswordAlert()
            })
        }
      }
    })]
  }
}

Answer 1

不可以，Apple 不允许访问指纹数据。这与安全有关。

iOS SDK 只允许您让用户使用 Touch ID 验证他们自己。

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