How to deal with dynamic Sections and Rows in iOS UITableView

Question

My issue

When I deal with UITableView, I basically have an Array table_data with my sections and rows.

Answer 1

An approach I use when creating a table where I know all the possible sections is with enums. You create an enum for each of the possible section types:

enum SectionTypes { case sectionA, sectionB, sectionC }

And then create a variable to hold the sections:

var sections: [SectionTypes]

When you have your data ready then you populate sections with the sections that needs to be displayed. I usually also make a method to help get the section:

func getSection(forSection: Int) -> SectionTypes {
        return sections[forSection]
    }

With this in place you can start implementing the common DataSource delegate methods:

func numberOfSections(in collectionView: UICollectionView) -> Int {
    return sections.count
}

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    switch getSection(forSection: section) {
    case .sectionA:
        return 0 //Add the code to get the count of rows for this section
    case .sectionB:
        return 0
    default:
        return 0
    }
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    switch getSection(forSection: indexPath.section) {
    case .sectionA:
        //Get section A cell type and format as your need
    //etc
    }
}