CHQPasscodeViewController

base on LTHPasscodeViewController by rolandleth.

add passcode to your app, including digit, letter and gesture passcode, and you would be able to customise your own passcode view, and change them freely when using.

#INSTALLAION Drag the CHQPasscodeViewController to your project, and #import "CHQPasscodeViewController.h" when you use it. This library make use of Masonry to configure the constraints, so you may need to add Masonry to your project.

#USAGE Example : called in application:didFinishLaunchingWithOptions:

[CHQPasscodeViewController useKeychain:NO];
if ([CHQPasscodeViewController doesPasscodeExist]) {
    if ([CHQPasscodeViewController didPasscodeTimerEnd])
        [[CHQPasscodeViewController sharedUser] showLockScreenWithAnimation:YES
                                                                 withLogout:NO
                                                             andLogoutTitle:nil];
}

###Displaying a passcode view

- (void)showLockScreenWithAnimation:(BOOL)animated withLogout:(BOOL)hasLogout andLogoutTitle:(NSString*)logoutTitle;

###Show passcode view for enabling, changing, disabling the passcode or changing the passcode type.

/**
 @param viewController The view controller where the passcode view controller will be displayed.
 @param asModal        Set to YES to present as a modal, or to NO to push on the current nav stack.
 */
- (void)showForEnablingPasscodeInViewController:(UIViewController *)viewController asModal:(BOOL)isModal;
- (void)showForDisablingPasscodeInViewController:(UIViewController *)viewController asModal:(BOOL)isModal;
- (void)showForChangingPasscodeInViewController:(UIViewController *)viewController asModal:(BOOL)isModal;
- (void)setLockType:(CHQLockType)type inViewController:(UIViewController *)viewController asModal:(BOOL)isModal

###Keychain this library saves the passcode in the keychain by default. You are able to customise your own saving, to do this customisation, you need to call [CHQPasscodeViewController useKeychain:NO] after initializing and implement some protocol methods:

- (void)deletePasscode;
- (void)savePasscode:(NSString *)passcode;
- (NSString *)passcode;

###Timer this library supports for setting the start time when the passcode view take effects, this also handled by keychain by default, if you want to customize your timer, you need to call [CHQPasscodeViewController useKeychain:NO] and implement some protocol methods:

- (NSTimeInterval)timerDuration;
- (void)saveTimerDuration:(NSTimeInterval)duration;
- (NSTimeInterval)timerStartTime;
- (void)saveTimerStartTime;
- (BOOL)didPasscodeTimerEnd;

###Tracking behavior implement some protocol methods to track the passcode view:

- (void)passcodeViewControllerWillClose;
- (void)maxNumberOfFailedAttemptsReached;
- (void)passcodeWasEnteredSuccessfully;
- (void)logoutButtonWasPressed;

#SUPPORTING PASSCODE TYPE FOR NOW this library support 3 passcode type currently, they are Digit, Character and Gesture.

#CUSTOMISATION ###you can create your own personalized passcode view! to do this, you need to subclassing the CHQPasscodeView:

- (void)setupViews;
- (BOOL)anythingIsFirstResponder;
- (void)anythingBecomeFirstResponder;
- (void)anythingResignFirstResponder;
- (void)resetUI;
- (void)validateWithPasscode:(NSString *)typedString;

# setupViews
  this method would be called when the passcode view is first generated, implement this method to configure your 
  passcode view.
# anythingIsFirstResponder
  this method would be called to comfirm that is some of compoments(like textfileds) in your passcode view is 
  first responder. return `[xx isFirstResponder]` in this method if you need one of your subviews to be 
  first responder.
# anythingBecomeFirstResponder
  this method would be called when the passcode view is ready in sight, and is ready to let your subview to take 
  over the first responder, call `[xx becomeFirstResonder]` in this method if you need one of your subviews to 
  be first responder.
# anythingResignFirstResponder
  this method would be called when the passcode view is about to dismiss in sight, call `[xx resignFirstResponder]`
  if you have set your subview to be first responder.
# resetUI
  this method would be called each time you interactive with the passcode view. implement this method to make 
  sure your passcode view displaying correctly in defferent states.
# validateWithPasscode:
  once your passcode view gets the passcode, call this method to validate the passcode.

Done subclassing the CHQPasscodeView, the last thing you need to do is attach it to the process of CHQPasscodeViewController:

• add new LockType ENUM CHQLockType in CHQPasscodeViewController.h
• call _passcodeView = [[YourPasscodeView alloc]initWithViewController:self] in the switch block in - (void)_changePasscodeViewToAimLockType:(CHQLockType)lockType in CHQPasscodeViewControler.m