如何在FSCalendar swift 3中更改事件数组的背景颜色?

问题描述

我有2个数组的日期，想要为特定事件设置不同的颜色，请帮助执行此操作.

I'm having an 2arrays of dates and want to set different colors for particular event please help how to do this.

我正在尝试实现以下代码，但返回无效无颜色效果无错误，请耐心等待.

import UIKit
import FSCalendar

class myCalendarViewController: UIViewController,FSCalendarDelegate,FSCalendarDataSource,FSCalendarDelegateAppearance {

    var presentdays = [String]()
    var absentdays = [String]()

@IBOutlet weak var calendar: FSCalendar!

fileprivate let gregorian: Calendar = Calendar(identifier: .gregorian)
fileprivate lazy var dateFormatter1: DateFormatter = {
   let formatter = DateFormatter()
   formatter.dateFormat = "yyyy/MM/dd"
   return formatter
}()

override func viewDidLoad() {
      super.viewDidLoad()
}

func calendar(_ calendar: FSCalendar, appearance: FSCalendarAppearance,  titleDefaultColorFor date: Date) -> UIColor? {
         presentdays = ["2017-06-03",
                        "2017-06-06",
                        "2017-06-12",
                        "2017-06-25"]

         absentdays = ["2017-06-10",
                       "2017-06-18",
                       "2017-06-15",
                       "2017-06-16"]

let datestring2 : String = dateFormatter1.string(from:date)

if presentdays.contains(datestring2)
{
    return UIColor.green
}
else if absentdays.contains(datestring2)
{
    return UIColor.red
}
else{
    return nil
}

}
   }

推荐答案

您的DateFormatter的dateFormat与数组中的字符串日期不匹配，因此将dateFormat更改为yyyy-MM-dd，然后检查数组是否包含对象

Your dateFormat of DateFormatter and string date in array doesn't match so changes the dateFormat to yyyy-MM-dd and then check array contains object or not.

fileprivate lazy var dateFormatter1: DateFormatter = {
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy-MM-dd"
    return formatter
}()

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