uicollectionview-ardynamicheightlayoutcell's Introduction

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fork from UICollectionView-ARDynamicHeightLayoutCell of version v1.0

UICollectionView+ARDynamicHeightLayoutCell

An simple category for caculating autolayout UICollectionViewCell size. Automatic manage cell's size cache, automatic invalidate, most improve efficiency.

Demo gif

Support

A prototype cell in storyboard
-registerNib:forCellReuseIdentifier:
-registerClass:forCellReuseIdentifier:

Usage

if your cell use autolayout , all you need just to do like this:

Fixed width

#import "UICollectionView+ARDynamicHeightLayoutCell.h"

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    return [collectionView ar_sizeForCellWithIdentifier:@"DynamicHeightCell" fixedWidth:300 configuration:^(id cell) {

       //configuration your cell
        FeedModel *feed = self.feeds[indexPath.row];
        [cell filleCellWithFeed:feed];

    }];
}

Fixed height

#import "UICollectionView+ARDynamicHeightLayoutCell.h"

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    return [collectionView ar_sizeForCellWithIdentifier:@"DynamicHeightCell" fixedHeight:400 configuration:^(id cell) {
    	//configuration your cell
           FeedModel *feed = self.feeds[indexPath.row];
           [cell filleCellWithFeed:feed];
	}
}

Dynamic size

#import "UICollectionView+ARDynamicHeightLayoutCell.h"

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    return [collectionView ar_sizeForCellWithIdentifier:@"DynamicHeightCell" configuration:^(id cell) {
    	//configuration your cell
           FeedModel *feed = self.feeds[indexPath.row];
           [cell filleCellWithFeed:feed];
	}
}