Code Quality Rank: L5
Programming language: Swift
License: MIT License
Tags: Security    
Latest version: v1.0.1

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A Swift implementation of passcode lock for iOS with TouchID authentication.


PasscodeLock requires Swift 2.0 and Xcode 7


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github "yankodimitrov/SwiftPasscodeLock"


  1. Create an implementation of the PasscodeRepositoryType protocol.

  2. Create an implementation of the PasscodeLockConfigurationType protocol and set your preferred passcode lock configuration options. If you set the maximumInccorectPasscodeAttempts to a number greather than zero when the user reaches that number of incorrect passcode attempts a notification with name PasscodeLockIncorrectPasscodeNotification will be posted on the default NSNotificationCenter.

  3. Create an instance of the PasscodeLockPresenter class. Next inside your UIApplicationDelegate implementation call it to present the passcode in didFinishLaunchingWithOptions and applicationDidEnterBackground methods. The passcode lock will be presented only if your user has set a passcode.

  4. Allow your users to set a passcode by presenting the PasscodeLockViewController in .SetPasscode state:

    let configuration = ... // your implementation of the PasscodeLockConfigurationType protocol

let passcodeVC = PasscodeLockViewController(state: .SetPasscode, configuration: configuration)

presentViewController(passcodeVC, animated: true, completion: nil)

You can present the `PasscodeLockViewController` in one of the four initial states using the `LockState` enumeration options: `.EnterPasscode`, `.SetPasscode`, `.ChangePasscode`, `.RemovePasscode`.

Also you can set the initial passcode lock state to your own implementation of the `PasscodeLockStateType` protocol.

## Customization

#### Custom Design

The PasscodeLock will look for `PasscodeLockView.xib` inside your app bundle and if it can't find it will load its default one, so if you want to have a custom design create a new `xib` with the name `PasscodeLockView` and set its owner to an instance of `PasscodeLockViewController` class and module to `PasscodeLock`. 

Then connect the `view` outlet to the view of your `xib` file and make sure to connect the remaining `IBOutlet`s and `IBAction`s. Also make sure to set module to `PasscodeLock` on all `PasscodeSignPlaceholderView` and `PasscodeSignButton` in the nib.

PasscodeLock comes with two view components: `PasscodeSignPlaceholderView` and `PasscodeSignButton` that you can use to create your own custom designs. Both classes are `@IBDesignable` and `@IBInspectable`, so you can see their appearance and change their properties right inside the interface builder:

<img src="https://raw.githubusercontent.com/yankodimitrov/SwiftPasscodeLock/master/passcode-view.png" height="270">

#### Localization

Take a look at `PasscodeLock/en.lproj/PasscodeLock.strings` for the localization keys. Here again the PasscodeLock will look for the `PasscodeLock.strings` file inside your app bundle and if it can't find it will use the default localization file.

## Demo App

The demo app comes with a simple implementation of the `PasscodeRepositoryType` protocol that is using the **NSUserDefaults** to store an retrieve the passcode. In your real applications you will probably want to use the **Keychain API**. Keep in mind that the **Keychain** records will not be removed when your user deletes your app.