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collectionviewgridlayout

A CollectionViewGridLayout is a layout manager for UICollectionView that provides a grid-based layout for your collection view’s items.

Features

  • Create grid-based layout for UICollectionView
  • Specify number of columns and item spacing
  • Supports dynamically changing layout (e.g., adding/removing cells)
  • Works with any UICollectionViewDataSource
  • Caches calculation for optimized performance

Installation

To install CollectionViewGridLayout, you need to use CocoaPods. Add the following line to your Podfile:

“`ruby
pod ‘CollectionViewGridLayout’
“`

Then run the command:

“`bash
pod install
“`

Usage

Import the Framework

In your project, import the CollectionViewGridLayout framework:

“`swift
import CollectionViewGridLayout
“`

Create and Assign the Layout

To use CollectionViewGridLayout as the layout manager for your collection view:

“`swift
let layout = CollectionViewGridLayout()
collectionView.setCollectionViewLayout(layout, animated: false)
“`

Customize Layout

Change Number of Columns

You can specify the number of columns in the grid using the columns property:

“`swift
layout.columns = 3
“`

Adjust Item Spacing

To change the spacing between items, update the itemSpacing property:

“`swift
layout.itemSpacing = 10
“`

Reload Layout

If you make any changes to your collection view (e.g., adding or removing cells), you need to reload the layout for the changes to take effect:

“`swift
collectionView.reloadData()
“`

Performance

CollectionViewGridLayout optimizes performance by caching calculations. It calculates the layout only when necessary (e.g., adding/removing cells or resizing the collection view).

Additional Notes

CollectionViewGridLayout works with any UICollectionViewDataSource. Make sure to implement the required methods in your data source.

For more information, refer to the official documentation of UICollectionViewDataSource.