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iOS Introduction to Scroll Views with Swift 2 Paged Scrolling Adding a Page Control

Pawel Zgoda-Ferchmin
Pawel Zgoda-Ferchmin
900 Points
Posted by Pawel Zgoda-Ferchmin
Pawel Zgoda-Ferchmin
900 Points

How does the app know what I want a single page to be?

Is each page just the width of the screen?

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello:

If you notice he has a totalWidth in the for-in loop, which every time a page is loaded it "adds" to that property. So when the next page is loaded, then it's frame will be created with the value from totalWidth. 

pageView.frame = CGRect(origin: CGPoint(x: totalWidth, y: 0), size: scrollView.bounds.size)

So, when the for in loop creates the first view, it's frame will be at 0,0 and then it will add the width to the property, let's say in this case it add's 10 points.

Then the next time the loop creates another view, this time it's frame will be at 10,0. Which means that it will create that page, 10 points to the right.

Hope you understand. If you want a more detailed explanation please let me know.

Good luck