如何使用JTAppleCalendar在一个ViewController中制作两个日历

JTAppleCalendar是一个开源的日历库，可以帮助开发者在iOS应用中实现自定义的日历功能。使用JTAppleCalendar可以在一个ViewController中制作两个日历的步骤如下：

首先，确保你的项目中已经集成了JTAppleCalendar库。你可以通过CocoaPods或手动下载并导入库文件来实现。
在需要使用日历的ViewController中，导入JTAppleCalendar库。

import JTAppleCalendar

创建两个JTAppleCalendarView实例，分别用于显示两个日历。

let calendarView1 = JTAppleCalendarView()
let calendarView2 = JTAppleCalendarView()

设置日历的外观和行为。你可以通过JTAppleCalendarView的属性和代理方法来自定义日历的外观和行为，例如设置日期的字体、颜色、背景、选择日期的样式等。

calendarView1.calendarDelegate = self
calendarView1.calendarDataSource = self
calendarView1.registerCellViewXib(file: "CustomCellView")
calendarView1.cellInset = CGPoint(x: 0, y: 0)
calendarView1.allowsMultipleSelection = true

实现JTAppleCalendarView的代理方法，以获取日历的数据和处理用户的操作。

extension ViewController: JTAppleCalendarViewDelegate, JTAppleCalendarViewDataSource {
    func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
        let startDate = Date()
        let endDate = Calendar.current.date(byAdding: .year, value: 1, to: startDate)!
        let parameters = ConfigurationParameters(startDate: startDate, endDate: endDate)
        return parameters
    }
    
    func calendar(_ calendar: JTAppleCalendarView, cellForItemAt date: Date, cellState: CellState, indexPath: IndexPath) -> JTAppleCell {
        let cell = calendar.dequeueReusableJTAppleCell(withReuseIdentifier: "CustomCellView", for: indexPath) as! CustomCellView
        cell.dateLabel.text = cellState.text
        return cell
    }
    
    // 其他代理方法...
}

在ViewController的视图中添加两个JTAppleCalendarView，并设置其约束。

view.addSubview(calendarView1)
view.addSubview(calendarView2)

calendarView1.translatesAutoresizingMaskIntoConstraints = false
calendarView2.translatesAutoresizingMaskIntoConstraints = false

NSLayoutConstraint.activate([
    calendarView1.topAnchor.constraint(equalTo: view.topAnchor),
    calendarView1.leadingAnchor.constraint(equalTo: view.leadingAnchor),
    calendarView1.trailingAnchor.constraint(equalTo: view.trailingAnchor),
    calendarView1.heightAnchor.constraint(equalToConstant: 300),
    
    calendarView2.topAnchor.constraint(equalTo: calendarView1.bottomAnchor, constant: 20),
    calendarView2.leadingAnchor.constraint(equalTo: view.leadingAnchor),
    calendarView2.trailingAnchor.constraint(equalTo: view.trailingAnchor),
    calendarView2.heightAnchor.constraint(equalToConstant: 300)
])

在ViewController中实现JTAppleCalendarView的数据源方法，以提供日历的数据。

extension ViewController: JTAppleCalendarViewDataSource {
    func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
        let startDate = Date()
        let endDate = Calendar.current.date(byAdding: .year, value: 1, to: startDate)!
        let parameters = ConfigurationParameters(startDate: startDate, endDate: endDate)
        return parameters
    }
    
    func calendar(_ calendar: JTAppleCalendarView, cellForItemAt date: Date, cellState: CellState, indexPath: IndexPath) -> JTAppleCell {
        let cell = calendar.dequeueReusableJTAppleCell(withReuseIdentifier: "CustomCellView", for: indexPath) as! CustomCellView
        cell.dateLabel.text = cellState.text
        return cell
    }
    
    // 其他数据源方法...
}

通过以上步骤，你就可以在一个ViewController中使用JTAppleCalendar制作两个日历了。你可以根据自己的需求进一步定制日历的外观和行为，例如添加事件标记、处理日期选择事件等。