在某些tableView单元格中快速更改单元格背景颜色 [英] Swift change cell background colors in SOME tableView cells

问题描述

两个数组。第一个具有所有事件，第二个具有冲突事件（都存在于第一个数组中）。 TableView显示所有事件。
我想在表格视图单元格中突出显示第二个数组的元素

Two arrays. 1st has all the events, 2nd has the conflicting events(all exist in the 1st array). TableView shows all the events. I want to highlight the elements of the 2nd array in the table view cells

第一个数组21个项目

["Bicycling with Friends - Start: Nov 1, 18 6:00 AM - End: Nov 1, 18 9:30 AM", "Yoga - Start: Nov 1, 18 6:00 PM - End: Nov 1, 18 7:33 PM", "Local Pub with Friends - Start: Nov 1, 18 7:33 PM - End: Nov 1, 18 11:00 PM", "Football Game - Start: Nov 3, 18 6:14 PM - End: Nov 3, 18 9:44 PM", "Football Tailgate with John - Start: Nov 3, 18 6:14 PM - End: Nov 3, 18 9:44 PM", "Volleyball With Friends - Start: Nov 6, 18 12:00 PM - End: Nov 6, 18 1:26 PM", "Boba Tea Grand Opening - Start: Nov 6, 18 1:27 PM - End: Nov 6, 18 2:00 PM", "Evening Cookout with Friends - Start: Nov 6, 18 5:00 PM - End: Nov 6, 18 10:00 PM", "SF Coffee Festival - Start: Nov 6, 18 6:00 PM - End: Nov 6, 18 9:00 PM", "Roller Derby - Start: Nov 7, 18 12:00 PM - End: Nov 7, 18 2:30 PM", "Rock Concert - Start: Nov 7, 18 6:30 PM - End: Nov 7, 18 11:00 PM", "Lunch with Friends - Start: Nov 8, 18 11:30 AM - End: Nov 8, 18 12:59 PM", "Nap Break - Start: Nov 8, 18 12:56 PM - End: Nov 8, 18 1:30 PM", "Basketball Game - Start: Nov 8, 18 7:30 PM - End: Nov 8, 18 10:30 PM", "Lunch Meeting - Start: Nov 9, 18 12:30 PM - End: Nov 9, 18 2:30 PM", "Free Donuts - Start: Nov 9, 18 3:00 PM - End: Nov 9, 18 4:00 PM", "TV Show Marathon - Start: Nov 9, 18 4:30 PM - End: Nov 9, 18 9:00 PM", "Beer with Friends - Start: Nov 9, 18 8:00 PM - End: Nov 9, 18 9:30 PM", "Birthday Party - Start: Nov 10, 18 12:30 PM - End: Nov 10, 18 8:30 PM", "Dentist Appointment - Start: Nov 10, 18 1:45 PM - End: Nov 10, 18 2:30 PM", "Evening Picnic - Start: Nov 10, 18 6:00 PM - End: Nov 10, 18 7:00 PM"]
the ["Football Tailgate with John - Start: Nov 3, 18 6:14 PM - End: Nov 3, 18 9:44 PM", "Football Game - Start: Nov 3, 18 6:14 PM - End: Nov 3, 18 9:44 PM", "SF Coffee Festival - Start: Nov 6, 18 6:00 PM - End: Nov 6, 18 9:00 PM", "Evening Cookout with Friends - Start: Nov 6, 18 5:00 PM - End: Nov 6, 18 10:00 PM", "Nap Break - Start: Nov 8, 18 12:56 PM - End: Nov 8, 18 1:30 PM", "Lunch with Friends - Start: Nov 8, 18 11:30 AM - End: Nov 8, 18 12:59 PM", "Beer with Friends - Start: Nov 9, 18 8:00 PM - End: Nov 9, 18 9:30 PM", "TV Show Marathon - Start: Nov 9, 18 4:30 PM - End: Nov 9, 18 9:00 PM", "Dentist Appointment - Start: Nov 10, 18 1:45 PM - End: Nov 10, 18 2:30 PM", "Birthday Party - Start: Nov 10, 18 12:30 PM - End: Nov 10, 18 8:30 PM", "Birthday Party - Start: Nov 10, 18 12:30 PM - End: Nov 10, 18 8:30 PM"]

第二阵列

conflictingEvents # 11
the ["Football Tailgate with John - Start: Nov 3, 18 6:14 PM - End: Nov 3, 18 9:44 PM", "Football Game - Start: Nov 3, 18 6:14 PM - End: Nov 3, 18 9:44 PM", "SF Coffee Festival - Start: Nov 6, 18 6:00 PM - End: Nov 6, 18 9:00 PM", "Evening Cookout with Friends - Start: Nov 6, 18 5:00 PM - End: Nov 6, 18 10:00 PM", "Nap Break - Start: Nov 8, 18 12:56 PM - End: Nov 8, 18 1:30 PM", "Lunch with Friends - Start: Nov 8, 18 11:30 AM - End: Nov 8, 18 12:59 PM", "Beer with Friends - Start: Nov 9, 18 8:00 PM - End: Nov 9, 18 9:30 PM", "TV Show Marathon - Start: Nov 9, 18 4:30 PM - End: Nov 9, 18 9:00 PM", "Dentist Appointment - Start: Nov 10, 18 1:45 PM - End: Nov 10, 18 2:30 PM", "Birthday Party - Start: Nov 10, 18 12:30 PM - End: Nov 10, 18 8:30 PM", "Birthday Party - Start: Nov 10, 18 12:30 PM - End: Nov 10, 18 8:30 PM"]

表格的单元格第一个数组。

cell code for the table Which displays the first array.

cell.textLabel!.text = stringArray[indexPath.row]

我想突出显示此表中第二个数组的元素

I want to highlight the elements of the second array in this table

我是新手

推荐答案

这个怎么样？

class TableViewController: UITableViewController {

    var listA = ["Event 1", "Event 2", "Event 3", "Event 4"]
    var listB = ["Event 1", "Event 3"]

    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView,
                            numberOfRowsInSection section: Int) -> Int {
        return self.listA.count
    }


    override func tableView(_ tableView: UITableView,
                            cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView
            .dequeueReusableCell(withIdentifier: "reuseIdentifier", for: indexPath)

        let event = self.listA[indexPath.row]
        cell.textLabel?.text = event
        cell.backgroundColor = self.listB.contains(event) ? .secondarySystemFill : nil

        return cell
    }

}

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