Blog post

MFWalkthrough: A Container View Controller for iOS

Installation

Demo

You can find the sample project in Example/WalkthroughDemo.

Usage

Display walkthrough containing 3 view controllers

• MFWalkthroughDataSource - Used to determine what property to observe to enable transitions
• MFWalkthroughDelegate - React to various transitions and states

#import <MFWalkthrough/MFWalkthroughViewController.h>

@interface ViewController : UIViewController <MFWalkthroughDataSource, MFWalkthroughDelegate>

In the implementation,

// Initialize your view controllers
UIViewController *firstController;
UIViewController *secondController;
UIViewController *lastController;

// Create the MFWalkthroughViewController instance
MFWalkthroughViewController *walkthroughController =
      [[MFWalkthroughViewController alloc]
          initWithViewControllers:@[ firstController, secondController, lastController ]];

// Present the walkthrough controller
[self.navigationController pushViewController:walkthroughController
                                       animated:YES];

Required data source method:

- (NSString *)walkthroughViewController:(MFWalkthroughViewController *)walkthroughViewController enableContinuePropertyForViewController:(UIViewController *)viewController {
  return @"somePropertyThatDeterminesIfContinueIsEnabled";
}

Required delegate methods:

- (void)walkthroughViewController:(MFWalkthroughViewController *)walkthroughViewController willGoBackFromFirstViewController:(UIViewController *)firstViewController {
  NSLog(@"I'm at the very beginning!");
}

- (void)walkthroughViewController:(MFWalkthroughViewController *)walkthroughViewController willContinueFromLastViewController:(UIViewController *)lastViewController {
  NSLog(@"I'm at the very end!");
}

The following delegate methods are optional:

• - (void)walkthroughViewController:couldNotContinueFromViewController:
• - (void)walkthroughViewController:willContinueFromViewController:toViewController:
• - (void)walkthroughViewController:willGoBackFromViewController:toViewController:

Refer to source documentation for more detail

Customization

MFWalkthrough is designed to be used in conjunction with UINavigationController, simplifying conditional transitions between view controllers depending on some intermediate state.

FRDLivelyButton is used to render the navigation buttons. You can customize the button colors and line widths via the following MFWalkthroughViewController properties:

• (UIColor *)navigationButtonColor - Defaults to navigationBar.tintColor
• (CGFloat)navigationButtonLineWidth - Defaults to 3.0f

Testing

To run the unit tests:

$ cd Example
$ make install
$ make ci

Author

Mark Fayngersh, [email protected]

License

MFWalkthrough is available under the MIT license. See the LICENSE file for more info.