I want to create a tableView like the attached image by creating the best array or dictionary type.

I got json from API and put it in array with code similar to the one below.

SWIFT Code

 var movieList: [[String:AnyObject]]=[ ]

func sample(){
        Alamofire.request (.GET, "http://123456789").validate().responseJSON {response in
            switch response.result {
            case.Success:
                iflet value = response.result.value {
                    let json=JSON(value)

                    for (key,_): (String, JSON) in json ["movies"] {
                        for (key2,_): (String, JSON) in json ["movies"] [key] {
                            for(_,subJson3): (String,JSON) in json ["movies"] [key][key2] {
                                let movieList: String: AnyObject = [
                                    "id": subJson3["id"].int!,
                                    "title": subJson3["title"].string!,
                                    "published_year": subJson3["published_year"].string!
                                ]
                                self.movieList.append(movieList)
                            }
                        }
                    }
                    self.tableView.reloadData()
                }
            case.Failure:
                print("Failed to get information.")
            }
        }
}

JSON data

{
  "movies": {
    "2015" : {
      "1" : [
        {
          "id": 111,
          title: Title 1,
          "published_year": "2015",
        }
      ],
      "6" : [
        {
          "id": 222,
          title: Title 2,
          "published_year": "2015",
        }
      ]
    },
    "2008" : {
      "3" : [
        {
          "id"—333,
          title: Title 3,
          "published_year": "2008",
        },
        {
          "id" : 444,
          title: Title 4 ,
          "published_year": "2008",
        }
      ],
    },
    "2016" : {
      "1" : [
        {
          "id" : 555,
          title: Title 5 ,
          "published_year": "2016",
        },
        {
          "id" : 666,
          title: Title 6 ,
          "published_year": "2016",
        }
      ]
    }
  }
}

What's in the movieList array data

var movieList: [[String: AnyObject]] = [["id": 111, "title": タイトル1, "published_year" : 2015], ["id": 222, "title": タイトル2, "published_year" : 2015], ["id": 333, "title": タイトル3, "published_year" : 2008], ["id": 444, "title": タイトル4, "published_year" : 2008], ["id": 555, "title": タイトル5, "published_year" : 2016], ["id": 666, "title": タイトル6, "published_year" : 2016]]

Is it possible to divide tableView into annual sections from this data and store the title in row?
In short, I would like to make it look like the image below.

Or should I make a dictionary like the one below?

 var movieList: [String: AnyObject] = [
2015:[[id]:111, "title": Title 1, "published_year":2015], [id":222, "title": Title 2, "published_year":2015]], 2008:[[id":333, "title": Title 3, "published_year":2008], [id":444, "title":4, "published_year":2016]
]

What kind of array or dictionary type should I create to create a tableView like the attached image?We have data for about 100 years, so we would like to avoid creating variables for 100 years.

swift ios

2022-09-30 21:19

1 Answers

This is what it looks like to express the JSON data you presented in Swift data type.

let jsonObject:[String:[String:[[String:AnyObject]]]]=[
    "movies": [
        "2015" : [
            "1" : [
                [
                    "id": 111,
                    title: Title 1,
                    "published_year": "2015",
                ]
                //,...
            ]
            //,...
        //,...
    ]
]

It's so complicated that I don't feel like using it as it is.

But two examples you wrote:

 var movieList: [[String:AnyObject]]

I have to reconfigure the section information every time.

 var movieList: [String: AnyObject]

For the , see

var movieList: [String:[String:AnyObject]]]

I think it's a mistake to write in , but the outermost data type Dictionary is out of order, so you have to rearrange the data so that it's in the order you want to display every time.Just as the data types shown were incorrect, as the hierarchy deepens to this level, it is easy to lose track of which tier and which data you are accessing.

This may be contrary to the title "best array or dictionary type", but overall code can be simpler if you define the best data structure for what your app is trying to do.

It may sound a little confusing, but I'll prepare two data types:

 structure Movie:CustomStringConvertible{
    variable —Int
    variable —String
    var publishedYear: String

    init(json movieItem:JSON){
        self.id=movieItem["id"].int!
        self.title=movieItem["title"].string!
        self.publishedYear=movieItem["published_year"].string!
    }

    // For debugging
    var description: String {
        return "<Movie:\(id):\(title)(\(publishedYear))>"
    }
}

structureMovieSection:CustomStringConvertible{
    var header:String
    var movies —Movies

    init(header:String, json yearlyMovies:JSON) {
        self.header=header
        var movies: Movie = [ ]
        for(_,monthlyMovies) in yearlyMovies {
            for(_,movie) in monthlyMovies {
                movies.append (Movie(json:movie))
            }
        }
        self.movies=movies
    }

    // For debugging
    var description: String {
        return "<MovieSection:\(header)\n\(movies))>"
    }
}

Use the data type above to prepare the instance variables.

 var movieSections: MovieSection = [ ]

Then you can write the part where you want to put the data in this array like this

 case.Success(let value):
        let json=JSON(value)
        for (year, section) in json ["movies"].sort({$0.0>$1.0}){
            self.movieSections.append(MovieSection(header:"\"(year)year", json:section))
        }

What do you think?Don't you think it's going to be quite refreshing?

In order to realize the UITableView screen you presented, you need to implement the following four methods of UITableViewDataSource, which is also quite refreshing.

 func numberOfSectionsInTableView (tableView:UITableView) - > Int{
    return movieSections.count
}

functableView (tableView: UITableView, numberOfRowsInSection: Int) - > Int {
    return movieSections [section].movies.count
}

functableView (tableView: UITableView, titleForHeaderInSection section: Int) - > String?{
    return movieSections [section].header
}

functableView(tableView:UITableView, cellForRowAtIndexPathindexPath:NSIndexPath) - >UITableViewCell{
    letcell=tableView.dueReusableCellWithIdentifier("Cell", forIndexPath:indexPath)
    let movie=movieSections [indexPath.section].movies [indexPath.row]
    cell.textLabel?.text=movie.title
    return cell
}

While Swift's Dictionary equivalent data structures are easy to express, they are often difficult to use when used for long-lasting or frequently referenced data.

By defining the best data structure for the problem area, the entire program can be refreshed.Please try it.

2022-09-30 21:19

If you have any answers or tips

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