https://github.com/pronebird/custommodaltransition

Custom transitions on iOS 7 and iOS 8
https://github.com/pronebird/custommodaltransition

Last synced: 6 days ago
JSON representation

Custom transitions on iOS 7 and iOS 8

• Host: GitHub
• URL: https://github.com/pronebird/custommodaltransition
• Owner: pronebird
• Created: 2014-05-29T19:29:03.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2015-10-10T17:00:19.000Z (about 9 years ago)
• Last Synced: 2024-10-31T13:50:33.029Z (13 days ago)
• Language: Objective-C
• Homepage:
• Size: 769 KB
• Stars: 84
• Watchers: 4
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
Custom modal transition

=====================



A custom transition I developed for one of my apps. It works on iOS 7 - iOS 8.2.

### UIPresentationController update (iOS 8 only)

A solution using `UIPresentationController` and without iOS 7 hacks can be found in [ios8 branch](https://github.com/pronebird/CustomModalTransition/tree/ios8). It features properly handled appearance events, device orientations support and much less code.

### Caveats

- Controllers will not properly rotate if orientation changed when presented. There is only one exception, if presented controller is a navigation controller, then rotation works fine. This seems to be a UIKit bug on iOS 7 or iOS 8. `UIPresentationController` solves that problem by providing a way to resize controllers on orientation change.

- State restoration is possible but presented VC should restore `transitioningDelegate`, `modalPresentationStyle` and `modalPresentationCapturesStatusBarAppearance`. If you use storyboards then it's easy:

  ```objc

  - (void)encodeRestorableStateWithCoder:(NSCoder *)coder {

    [super encodeRestorableStateWithCoder:coder];

    

    [coder encodeInteger:self.modalPresentationStyle forKey:@"modalPresentationStyle"];

    [coder encodeInteger:self.modalPresentationCapturesStatusBarAppearance forKey:@"modalPresentationCapturesStatusBarAppearance"];

    [coder encodeObject:self.transitioningDelegate forKey:@"transitioningDelegate"];

  }

  

  - (void)decodeRestorableStateWithCoder:(NSCoder *)coder {

    [super decodeRestorableStateWithCoder:coder];

  	

    self.modalPresentationStyle = [coder decodeIntegerForKey:@"modalPresentationStyle"];

    self.modalPresentationCapturesStatusBarAppearance = [coder decodeIntegerForKey:@"modalPresentationCapturesStatusBarAppearance"];

    self.transitioningDelegate = [coder decodeObjectForKey:@"transitioningDelegate"];

  }

  ```

### Blog post

This project is a part of [my blog post](https://coderwall.com/p/njtb0q). However lots of things changed since original blog post was published.

- Unwinding works fine if you fix `segueForUnwindingToViewController` in source navigation controller and create unwind segue using source view controller. Works for both iOS 7 and 8 (see http://stackoverflow.com/a/28607309/351305)

- Resetting views' frames to container bounds before adding them to container helps to solve issues with misplaced navigation bar and rotation issues on iOS 7.