如何获取集合视图动态行数？

Question

I'm collecting data from an API

sample API - This has different provinces & health regions

    {
        "summary": [
            {
                "cases": 520,
                "cumulative_cases": 63244,
                "cumulative_deaths": 614.0,
                "date": "11-04-2021",
                "deaths": 0.0,
                "health_region": "Calgary",
                "province": "Alberta"
            },
            {
                "cases": 139,
                "cumulative_cases": 12660,
                "cumulative_deaths": 123.0,
                "date": "11-04-2021",
                "deaths": 0.0,
                "health_region": "Central",
                "province": "Alberta"
            } 
   ]
}

**Collection View Code **

//Firstly I'm trying to get a count for the rows. I'm not sure my approach is right or wrong

 func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
            
            var count: Int = 0
            for text in 1...100{
                if jsonData?.summary[text].province == dataFromSelection {
                    count = jsonData?.summary.count ?? 0
                    print("count block")
                }
            }
            return count
        }
        
        func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
            
            if collectionView == myCollectionView {
                    print("if block")
                if (dataFromSelection == jsonData?.summary[indexPath.row].province) {
                    print("im here")
                    let today = jsonData?.summary[indexPath.row].cases
                    let tDeaths = jsonData?.summary[indexPath.row].cumulative_deaths
                    let tCases = jsonData?.summary[indexPath.row].cumulative_cases
                    let regionName = jsonData?.summary[indexPath.row].health_region
                    
                    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "RegionCell", for: indexPath) as! RegionCell
                    cell.configure(region: regionName!, totCase: tCases!, todCases: today!, totDeaths: tDeaths!)
                    return cell
                }

Image of simulator

Please help me out on this

• First I'm looking for the count of rows to be populated ie jsonData.summary[index] == Alberta (say)
• second only those rows to appear who have Alberta as a province let me know what I'm doing wrong here. I'm fairly new to swift

Answer 1

First create array for summary details and then Filter your summary array according to selection of province. ex:

let summaryArray = [ [ "cases": 520, "cumulative_cases": 63244, "cumulative_deaths": 614.0, "date": "11-04-2021", "deaths": 0.0, "health_region": "Calgary", "province": "Alberta" ], [ "cases": 139, "cumulative_cases": 12660, "cumulative_deaths": 123.0, "date": "11-04-2021", "deaths": 0.0, "health_region": "Central", "province": "Alberta" ] ]

let filterArray = summaryArray.filter({($0["province"] as? String "") == dataFromSelection})

And now use this filterArray for the count of rows and display the details in collection view cell