Swift 使用SnapKit实现 UICollectionViewCell 高度自适应

问题

在我们的日常开发中，经常会使用到UICollectionViewCell、UITableViewCell的自适应。

解决方案

之前的MVC开发中，使用SnapKit 处理UICollectionViewCell 高度自适应的问题后，一直想抽时间整理一下，下面就用部分的代码，解释一下 我这边处理的思路。

Controller

//
//  TaskVC.swift
//  BossClient
//
//  Created by qingxun on 2017/12/12.
//  Copyright © 2017年 吕陈强. All rights reserved.
//

import UIKit

class TaskVC: BaseViewController {



    fileprivate var dataArr:[TaskItemModel] = {
        var data = [TaskItemModel]()

        let model1 = TaskItemModel()
        model1.name = "123"
        model1.content = "123123123123123123123123123123123123123123123123123123123123123123";
        data.append(model1);


        let model2 = TaskItemModel()
        model2.name = "5446"
        model2.content = "3453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453451231345345345345345345345";
        data.append(model2);




        let model3 = TaskItemModel()
        model3.name = "123"
        model3.content = "123123123123123123123123123123123123123123123123123123123123123123";
        data.append(model3);


        let model4 = TaskItemModel()
        model4.name = "5446"
        model4.content = "3453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453453451231345345345345345345345";
        data.append(model4);


        let model5 = TaskItemModel()
        model5.name = "qweqwe"
        model5.content = "qweqweqwedasdqwewqeasdasdwqeqweasdasdqweqweasdasdweqweadasdqweqweasdasdqweqweasdadwqeqwasdasdadasdasdweqweqweqasdasdasdasdasdweqeqweqasd";
        data.append(model5);

        return data;
    }()

    //MARK:-滚动视图
    lazy var collectionView:UICollectionView = { [unowned self] in
        let flow = UICollectionViewFlowLayout();
        //垂直滚动
        flow.scrollDirection = .vertical
        //最小行间距(当垂直布局时是行间距，当水平布局时可以理解为列间距)
        flow.minimumLineSpacing = NEWHEIGHT(10);
        //两个单元格之间的最小间距
        flow.minimumInteritemSpacing = NEWWIDTH(10);

        flow.estimatedItemSize = CGSize(width: kScreenW, height: NEWHEIGHT(150));
//        flow.itemSize = 

        let collectionView = UICollectionView(frame: M_RECT(0, y: NEWHEIGHT(100), w: kScreenW, h: kScreenH - 64 - NEWHEIGHT(100)), collectionViewLayout: flow);
        collectionView.delegate = self;
        collectionView.dataSource = self;
        collectionView.isScrollEnabled = true;