Animated top menu for UITableView / UICollectionView / UIScrollView written in Swift!

Made in Yalantis.

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use_frameworks!pod'Persei','~> 4.0'

github"Yalantis/Persei" ~> 4.0

For application targets that do not support embedded frameworks, such as iOS 7, Persei can be integrated by including source files from the Persei folder directly, optionally wrapping the top-level types into struct Persei to simulate a namespace. Yes, this sucks.

1. Add Persei as a submodule by opening the Terminal, cd-ing into your top-level project directory, and entering the command git submodule add https://github.com/yalantis/Persei.git
2. Open the Persei folder, and drag Persei.xcodeproj into the file navigator of your app project.
3. In Xcode, navigate to the target configuration window by clicking on the blue project icon, and selecting the application target under the "Targets" heading in the sidebar.
4. Ensure that the deployment target of Persei.framework matches that of the application target.
5. In the tab bar at the top of that window, open the "Build Phases" panel.
6. Expand the "Target Dependencies" group, and add Persei.framework.
7. Expand the "Link Binary With Libraries" group, and add SideMenu.framework
8. Click on the + button at the top left of the panel and select "New Copy Files Phase". Rename this new phase to "Copy Frameworks", set the "Destination" to "Frameworks", and add Persei.framework.

import Persei

letmenu=MenuView() tableView.addSubview(menu)

In order to set items you need to instantiate array of MenuItem:

letitems= feedModes.map{mode: SomeYourCustomFeedMode -> MenuItem inreturnMenuItem(image: mode.image)} menu.items = items

You can specify selected item manually:

menu.selectedIndex =3

Note, that selectedIndex declared as Int? and will be nil in case of menu.items = nil.

Also, you can implement MenuViewDelegate to be notified about selection change:

// during init menu.delegate =self // actual implementation extensionFeedViewController:MenuViewDelegate{func menu(menu:MenuView, didSelectItemAt index:Int){ dataSource.mode =feedModes[index] // alter mode of dataSource tableView.reload() // update tableView }}

Menu can be reveal as a result of button tap:

func menuButtonSelected(sender:UIControl){ menu.revealed = !menu.revealed // or animated menu.setRevealed(true, animated:true)}

Use contentViewGravity to control sticking behavior. There are 3 available options:

• Top: contentView sticked to the top position of the view
• Center: contentView is aligned to the middle of the streched view
• Bottom: contentView sticked to the bottom

MenuItem declares set of attributes, that allow you to customize appearance of items:

structMenuItem{varimage:UIImage // default image varhighlightedImage:UIImage? // image used during selection varbackgroundColor:UIColor // default background color varhighlightedBackgroundColor:UIColor // background color used during selection varshadowColor:UIColor // color of bottom 2px shadow line }

Also you're free to configure background of MenuView by utilizing backgroundColor or backgroundImage. Note, that image should be resizeable:

letmenu=MenuView() menu.backgroundImage =UIImage(named:"top_menu_background")

• Can I place the UIImageView instead?
• Sure! Just subclass / use StickyHeaderView directly. It offers layout, positioning and reveal control. All you have to do is to assign your custom view (animated nian-cat UIImageView) to contentView:

letheaderView=StickyHeaderView()letimageView=UIImageView(...) headerView.contentView = imageView

Obviously, your custom view can have heigh different from default:

headerView.contentHeight = image.size.height

As well as control distance to trigger open/close of the header:

headerView.threshold =0.5

Threshold is a float value from 0 to 1, specifies how much user needs to drag header for reveal.

We’d be really happy if you sent us links to your projects where you use our component. Just send an email to [email protected] And do let us know if you have any questions or suggestion regarding the animation.

P.S. We’re going to publish more awesomeness wrapped in code and a tutorial on how to make UI for iOS (Android) better than better. Stay tuned!

The MIT License (MIT) Copyright © 2017 Yalantis Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.