当我在屏幕上移动 Collection View 时，整个 View Controller 会再次重新加载。这意味着之前发生的所有动画都必须再次发生。有没有办法在 Collection View 加载时停止 View Controller 重新加载？
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell2 = CollectionView.dequeueReusableCellWithReuseIdentifier("CollectionCell", forIndexPath: indexPath) as! BookingDateCollectionCellClass
let later = getDate(indexPath.row + 5).day
print(later)
let date: String = String(later)
print(date)
cell2.dateLabel.text = date
let day = getDateData(indexPath.row + 5).dayOfWeek()
print(day)
cell2.dayLabel.text = dayShortFromNumber(day!)
return cell2
}
import UIKit
class BookingDateVC: UIViewController, UITableViewDelegate, UICollectionViewDelegate, UICollectionViewDataSource {
// Outlets
@IBOutlet weak var tableViewDates: UITableView!
@IBOutlet weak var CollectionView: UICollectionView!
@IBOutlet weak var bigMonthView: UIView!
@IBOutlet weak var selectDateLabel: UILabel!
@IBOutlet weak var todayDateView: UIView!
@IBOutlet weak var todayButton: UIButton!
@IBOutlet weak var tomorrowButton: UIButton!
@IBOutlet weak var laterButton: UIButton!
@IBOutlet weak var plusButton: UIButton!
@IBOutlet weak var monthView: UIView!
@IBOutlet weak var monthLabel: UILabel!
// Calendar Variables
var month: Int?
var index: NSIndexPath?
var passData: dataReceipt?
override func viewDidLoad() {
super.viewDidLoad()
// Table View Customerisation
tableViewDates.backgroundColor = UIColor(red: 38/255, green: 163/255, blue: 133/255, alpha: 1)
self.tableViewDates.center.y += self.view.bounds.height
}
override func viewDidAppear(animated: Bool) {
// Sets up inital dates - Today, Tomorrow, Later
let today = getDate(0).day
let tomorrow = getDate(1).day
let later = getDate(2).day
todayButton.setTitle(String(today), forState: .Normal)
tomorrowButton.setTitle(String(tomorrow), forState: .Normal)
laterButton.setTitle(String(later), forState: .Normal)
plusButton.setTitle("+", forState: .Normal)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func todayButton(sender: AnyObject) {
passData?.data = monthFromNumber(getDate(0).month) + " " + todayButton.currentTitle!
}
@IBAction func tomorrowButton(sender: AnyObject) {
passData?.data = monthFromNumber(getDate(1).month) + " " + tomorrowButton.currentTitle!
}
// Gets date as components - Hour, Day, Month, Year
func getDate(days: Int) -> NSDateComponents{
let date = getDateData(days)
let unitFlags: NSCalendarUnit = [.Hour, .Day, .Month, .Year]
let components = NSCalendar.currentCalendar().components(unitFlags, fromDate: date)
return components
}
// Gets date + number of days from today
func getDateData(days: Int) -> NSDate{
let today = NSDate()
let date = NSCalendar.currentCalendar().dateByAddingUnit(
.Day,
value: days,
toDate: today,
options: NSCalendarOptions(rawValue: 0))
return date!
}
// Returns day string in full from day int
func dayFromNumber(day: Int) -> String{
switch(day){
case 1:
return "SUNDAY"
case 2:
return "MONDAY"
case 3:
return "TUESDAY"
case 4:
return "WEDNESDAY"
case 5:
return "THURSDAY"
case 6:
return "FRIDAY"
case 7:
return "SATURDAY"
default:
return ""
}
}
// Returns day string in short from day int
func dayShortFromNumber(day: Int) -> String{
switch(day){
case 1:
return "SUN"
case 2:
return "MON"
case 3:
return "TUE"
case 4:
return "WED"
case 5:
return "THU"
case 6:
return "FRI"
case 7:
return "SAT"
default:
return ""
}
}
// Returns month string in short from month int
func monthFromNumber(month: Int) -> String{
switch(month){
case 1:
return "JAN"
case 2:
return "FEB"
case 3:
return "MAR"
case 4:
return "APR"
case 5:
return "MAY"
case 6:
return "JUN"
case 7:
return "JUL"
case 8:
return "AUG"
case 9:
return "SEP"
case 10:
return "OCT"
case 11:
return "NOV"
case 12:
return "DEC"
default:
return ""
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return 3
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableViewDates.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! BookingDateCellClass
let later = getDate(2).day
let date: String = String(indexPath.row + later)
cell.dateLabel.text = date
let day = getDateData(indexPath.row + 2).dayOfWeek()
cell.dayLabel.text = dayFromNumber(day!)
let bgColorView = UIView()
bgColorView.backgroundColor = UIColor(red: 253/255, green: 196/255, blue: 0, alpha: 1)
cell.selectedBackgroundView = bgColorView
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let cell = tableView.cellForRowAtIndexPath(indexPath) as! BookingDateCellClass
passData?.data = monthFromNumber(getDate(indexPath.row + 2).month) + " " + cell.dateLabel.text!
performSegueWithIdentifier("timeSegue", sender: self)
}
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return false
}
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
{
return 60.0;//Choose your custom row height
}
@IBAction func laterButtonFunc(sender: AnyObject) {
// Animates to later dates
UIView.animateWithDuration(0.5, animations: {
self.tableViewDates.center.y = self.view.frame.height / 2
self.todayDateView.center.y = self.view.frame.height / 6
self.monthView.center.y = (self.view.frame.height / 4) * 3.25
})
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 20
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell2 = CollectionView.dequeueReusableCellWithReuseIdentifier("CollectionCell", forIndexPath: indexPath) as! BookingDateCollectionCellClass
let later = getDate(indexPath.row + 5).day
let date: String = String(later)
cell2.dateLabel.text = date
let day = getDateData(indexPath.row + 5).dayOfWeek()
cell2.dayLabel.text = dayShortFromNumber(day!)
//self.monthLabel.text = monthFromNumber(getDate(indexPath.row + 5).month)
return cell2
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
let cell = collectionView.cellForItemAtIndexPath(indexPath) as! BookingDateCollectionCellClass
passData?.data = monthFromNumber(getDate(indexPath.row + 5).month) + " " + cell.dateLabel.text!
performSegueWithIdentifier("timeSegue", sender: indexPath)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "timeSegue" {
if let destination = segue.destinationViewController as? BookingTimeVC {
print((passData?.data)!)
destination.passData = passData
}
}
}
}
最佳答案
我没有注意到调度没有完全执行。您在线程完成执行之前触摸了按钮。此外，我认为数据的调用不正确。应该单独调用设置数据然后重新加载表。或者，您可以在 Segue 时开始设置表数据，这样当用户到达 VC 时，一切都已准备就绪。不过，我倾向于这是一个调度问题。
关于ios - 当我水平滚动 Collection View 时，整个 View 会重新加载并再次开始动画，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37911790/