MXAutoPageControl

MXAutoPageControl is a subclass of UIPageControl

It can automatically set the right numberOfPages and currentPage depends on the scrollView, and also

Introduction

It depends on KVO of scrollView's contentOffset and contentSize
Then changes the UIPageControl's property numberOfPages and currentPage

Usage

You can easily use it just like a normal UIPageControl

var frame = CGRectMake(100, 500, 200, 20)
var pageControl = MXAutoPageControl(frame: frame, aScrollView: collectionView!, isInteractEnabled: true)
self.view.addSubView(pageControl)

1. You have to set the frame or layout constrains yourself
2. You should pass the scrollView you want this page control interact
3. When isInteractEnabled is true, tap on the page control will set the scrollView contentOffset.

To-do

1. It can only handle scrollView scrolls on horizontal. I will make it better use for vertical scrolls.