ios - JTAppleCalendar 以编程方式,单元格未显示
问题描述
我正在尝试在没有情节提要的情况下以编程方式实现 JTAppleCalendar,使用单元格的 xib 文件。我已经设置了委托和数据源,并实现了所需的功能,但单元格没有显示。我可以看到集合视图已设置并且在 Viewcontroller 中可见(链接 2 中图像中的蓝色方块),并且调用了 configureCalendar() 和 cellForItemAt(),但仍然没有显示数据。
我错过了什么?
var calendarView: JTAppleCalendarView!
override func viewDidLoad() {
super.viewDidLoad()
calendarView = JTAppleCalendarView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
calendarView.register(CalendarCellView.self, forCellWithReuseIdentifier: "cell")
calendarView.ibCalendarDelegate = self
calendarView.ibCalendarDataSource = self
self.view.addSubview(calendarView)
self.view.bringSubview(toFront: calendarView)
self.calendarView.backgroundColor = UIColor.blue
}
extension TestViewController: JTAppleCalendarViewDataSource {
func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy MM dd"
let startDate = formatter.date(from: "2016 02 01")! // You can use date generated from a formatter
let endDate = Date() // You can also use dates created from this function
let parameters = ConfigurationParameters(startDate: startDate,
endDate: endDate,
numberOfRows: 6, // Only 1, 2, 3, & 6 are allowed
calendar: Calendar.current,
generateInDates: .forAllMonths,
generateOutDates: .tillEndOfGrid,
firstDayOfWeek: .sunday)
return parameters
}
func calendar(_ calendar: JTAppleCalendarView, willDisplay cell: JTAppleCell, forItemAt date: Date, cellState: CellState, indexPath: IndexPath) {
}
}
extension TestViewController: JTAppleCalendarViewDelegate {
func calendar(_ calendar: JTAppleCalendarView, cellForItemAt date: Date, cellState: CellState, indexPath: IndexPath) -> JTAppleCell {
let cell = calendar.dequeueReusableJTAppleCell(withReuseIdentifier: "cell", for: indexPath) as! CalendarCellView
cell.dayLabel?.text = cellState.text
print(cellState.text)
return cell
}
}
class CalendarCellView: JTAppleCell {
@IBOutlet var dayLabel: UILabel!
@IBOutlet var taskImage: UIImageView!
override func awakeFromNib() {
dayLabel.textColor = UIColor.red
self.backgroundColor = UIColor.blue
}
}
解决方案
布局
JTAppleCalendarView
的超类是UICollectionView
,它用于UICollectionViewFlowLayout
布局项目。JTAppleCalendarView
提供CellSize
配置项目大小,您也可以使用UICollectionViewFlowLayout
配置Min Spacing
.
使用自定义单元格
我猜你是用xib来自定义单元格的,所以你必须使用register(_ nib: UINib?, forCellWithReuseIdentifier identifier: String)
注册单元格。最后,不要忘记为dayLabel添加约束。
例子
calendarView 的单元格大小为 40,宽度为 280(7 列),高度为 240(六行),单元格和行的最小间距为 0。