我每天都在努力获得DD：MM，这就是我所尝试的：
class ListCell: UICollectionViewCell {
@IBOutlet weak var nameView: UIView!
@IBOutlet weak var mainView: UIView!
@IBOutlet weak var nameButton: UIButton!
@IBOutlet weak var profileImageView: UIImageView!
@IBOutlet weak var dateLabel: UILabel!
@IBOutlet weak var listTitle: UILabel!
@IBOutlet weak var boughtLabel: UILabel!
@IBOutlet weak var boughtProgress: UIProgressView!
var numOfItems = 0
var numOfBought = 0
var counter: Double = 0{
didSet{
boughtProgress.isHidden = false
let fractionalProgress = Float(counter)
boughtProgress.setProgress(fractionalProgress, animated: true)
}
}
var currentUser: User!
var media: Media! {
didSet{
if currentUser != nil{
self.updateUI()
}
}
}
var cache = SAMCache.shared()
func updateUI(){
let profileImageKey = "\(media.createdBy.uid)-profileImage"
if let image = cache?.object(forKey: profileImageKey) as? UIImage {
self.profileImageView.image = image
}else{
media.createdBy.downloadProfilePicture { [weak self] (image, error) in
if let image = image {
self?.profileImageView.image = image
self?.cache?.setObject(image, forKey: profileImageKey)
}else if error != nil {
print(error)
}
}
}
mainView.layer.cornerRadius = 20
mainView.layer.masksToBounds = true
//profile image
profileImageView.layer.cornerRadius = profileImageView.bounds.height / 2.0
profileImageView.layer.masksToBounds = true
//name
nameButton.setTitle("\(media.createdBy.firstName) \(media.createdBy.lastName)", for: [])
nameView.layer.cornerRadius = 20
nameView.layer.masksToBounds = true
//date
dateLabel.text = "\(convertDateFormatter(theDate: media.dueAt))"
dateLabel.backgroundColor = UIColor(red: 1, green: 1, blue: 1, alpha: 0.3)
dateLabel.textColor = UIColor.white
dateLabel.layer.cornerRadius = dateLabel.bounds.height / 2.0
dateLabel.layer.masksToBounds = true
//title
listTitle.text = "\(media.title)"
//progress
numOfItems = media.items.count
print("num of items \(media.items.count)")
counter = Double(numOfBought)/Double(numOfItems)
boughtLabel.text = "\(numOfBought)/\(numOfItems) Bought"
boughtProgress.layer.cornerRadius = boughtProgress.bounds.height / 2.0
boughtProgress.layer.masksToBounds = true
}
@IBAction func arrowDidTap(){
print("arrow tapped")
}
func convertDateFormatter(theDate: String) -> String
{
print(theDate)
let newFormat = DateFormatter()
newFormat.dateFormat = "dd/MM/yyyy"
let dueDate = newFormat.date(from: theDate)
newFormat.dateFormat = "dd MMM yy"
print(newFormat.string(from: dueDate!))
return newFormat.string(from: dueDate!)
}
func getColourFromTag(tag: String) -> [CGColor] {
if tag == "Christmas" {
return [Colours.gradients.festive.start.cgColor, Colours.gradients.festive.end.cgColor]
}else if tag == "Birthday" {
return [Colours.gradients.lime.start.cgColor, Colours.gradients.lime.end.cgColor]
}else if tag == "Valentines Day" {
return [Colours.gradients.strawberry.start.cgColor, Colours.gradients.strawberry.end.cgColor]
}else if tag == "Charity" {
return [Colours.gradients.blueberry.start.cgColor, Colours.gradients.blueberry.end.cgColor]
}else if tag == "Event" {
return [Colours.gradients.fire.start.cgColor, Colours.gradients.fire.end.cgColor]
}else{
return [Colours.gradients.midnight.start.cgColor, Colours.gradients.midnight.end.cgColor]
}
}
我得到的错误是schedule.scheduleJob("55 15 * * *", async function () {
Number.client.on('error', console.error);
prototype.padLeft = function (base, chr) {
var len = (String(base || 10).length - String(this).length) + 1;
return len > 0 ? new Array(len).join(chr || '0') + this : this;
}
const date = new Date,
dateFormat = [date.getDate().padLeft(), (date.getMonth() + 1).padLeft()].join('-');
，如果我将该行注释掉，则会得到：Cannot read property 'on' of undefined我在做什么错了？