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PullUpController

Create your own pull up controller with multiple sticky points like in iOS Maps

Platform Swift 5 Cocoapods Compatible Maintainability

<img src="https://raw.githubusercontent.com/MarioIannotta/PullUpController/master/demo.gif" height="500"/>

Features

Setup

  1. Add pod 'PullUpController' to your Podfile or copy PullUpController.swift into your project
  2. Make sure the view controller that will be your pull up controller inherits from PullUpController
  3. Add the controller as child of your main controller using addPullUpController(<#T##PullUpController#>, initialStickyPointOffset: <#T##CGFloat#>, animated: <#T##Bool#>)

Customization

You can customize the controller behavior by overriding the followings properties:

pullUpControllerPreferredSize: CGSize

The desired size of the pull up controller’s view, in screen units. The default value is width: UIScreen.main.bounds.width, height: 400.

pullUpControllerPreferredLandscapeFrame: CGRect

The desired size of the pull up controller’s view, in screen units when the device is in landscape mode. The default value is (x: 10, y: 10, width: 300, height: UIScreen.main.bounds.height - 20).

pullUpControllerMiddleStickyPoints: [CGFloat]

A list of y values, in screen units expressed in the pull up controller coordinate system. At the end of the gestures the pull up controller will scroll to the nearest point in the list.

For a complete list of all the sticky points you can use pullUpControllerAllStickyPoints

pullUpControllerBounceOffset: CGFloat

A CGFloat value that determines how much the pull up controller's view can bounce outside it's size. The default value is 0 and that means the the view cannot expand beyond its size.

It's possible to change the view controller's view position programmatically by using the method pullUpControllerMoveToVisiblePoint(_ visiblePoint: CGFloat, animated: Bool, completion: (() -> Void)?)

This method will move the pull up controller's view in order to show the provided visible point.

You may use on of pullUpControllerAllStickyPoints item to provide a valid visible point.

By overriding the following method it is possible to customize all the animations performed by the controller's view. pullUpControllerAnimate(action: Action, withDuration duration: TimeInterval, animations: @escaping () -> Void, completion: ((Bool) -> Void)?)

You can consider override this method and customize the animation using the method UIView.animate(withDuration:, delay:, usingSpringWithDamping:, initialSpringVelocity:, options:, animations:, completion:)

It is possible to observe the PullUpController's view state by overriding those methods: pullUpControllerWillMove(to point: CGFloat)

This method is called before the pull up controller's view move to a sticky point.

pullUpControllerDidMove(to point: CGFloat)

This method is called after the pull up controller's view move to a point.

pullUpControllerDidDrag(to point: CGFloat)

This method is called after the pull up controller's view is dragged to a point.

PullUpController is easy draggable even if your PullUpController's view contains a UIScrollView, just attach it to the controller itself with the following method: <#T##UIScrollView#>.attach(to: <#T##PullUpController#>)

Attach the scroll view to the provided pull up controller in order to move it with the scroll view content.

Demo

In this repository you can also find a demo.

Info

If you like this git you can follow me here or on twitter :) @MarioIannotta

Cheers from Italy!