具有自定义单元格和多个节数组数据的Swift UITableView

Question

My Scenario, I am trying to create UITableView with custom cell and multiple sections from single array. Here, I need to show different titles in sections. How to do this? I used below code but not able to get clear understanding.

My Code below

var  data = [["1","2","3"], ["4","5"]]
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return data.count
}

override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 20
} 

Answer 1

There can be 2 cases around it,

1. In case you simply want to add String titles to each section , implement UITableViewDataSource's tableView(_: titleForHeaderInSection:) method.

2. And if you want to give a custom view for each section , implement UITableViewDelegate's tableView(_:viewForHeaderInSection:) method.

Here is an example with tableView(_: titleForHeaderInSection:) ,

class VC: UIViewController, UITableViewDataSource {
    let data = [["1","2","3"], ["4","5"]]
    let sectionNames = ["This is Sec-1", "And this is Sec-2"]

    func numberOfSections(in tableView: UITableView) -> Int {
        return data.count
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return data[section].count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CustomCell
        cell.textLabel?.text = data[indexPath.section][indexPath.row]
        return cell
    }

    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return sectionNames[section]
    }
}

Do implement tableView(_:heightForHeaderInSection:) in case you need custom height for each section .

Screenshot:

Edit:

Use accessoryType as .checkmark for cell selection.

Create a custom UITableViewCell and override setSelected(_:animated:) method in that like so,

class CustomCell: UITableViewCell {
    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        self.accessoryType = selected ? .checkmark : .none
    }
}

Set the reuseIdentifier of CustomCell in xib as cell . Also, update the tableView(_:cellForRowAt:) method to dequeue CustomCell instance. I updated that in the code above.