Swift: Create a Collection View Uicollectionview

The collection view created in Swift is almost the same as in OC, mainly implementing the Uicollectionviewdatasource Data source protocol and Uicollectionviewdelegateflowlayout custom layout protocol. Where Uicollectionviewdelegateflowlayout custom layout protocols are inherited from Uicollectionviewdelgate. Use a custom layout to set the size, position, spacing, and so on of the collection View cell

For example:

Let FlowLayout = Uicollectionviewflowlayout ()//Create Layout object

Flowlayout.itemsize = Cgsizemake ((device_width-7)/2, 210)//Set each cell size

Flowlayout.scrolldirection = uicollectionviewscrolldirection.vertical//Set vertical display

Flowlayout.sectioninset = Uiedgeinsetsmake (0, 1, 0, 1)//Set margin

flowlayout.minimumlinespacing = 0.0;//the upper and lower of each adjacent layout

Flowlayout.minimuminteritemspacing = 0.0;//The left and right of each adjacent layout

flowlayout.headerreferencesize = cgsizemake (0, 0);

Specific examples are as follows:

1. Create a project with the name Collection view--swift

2. Import footage, I have imported 9 photos

3. Operation of the code in Viewcontroller.swift:

Declaring attributes and letting classes inherit the protocol

Class The property.

Preparing data

Set up data sources and proxies

Set the collection view cell size when draining a layout

Register cell

To add a collection view to a view

Implementing a Data source protocol

Implementing the Proxy Protocol

Operation Result:

Swift: Create a Collection View Uicollectionview