Hi, I'm pretty new to programming, and I’m having a bit of trouble with Core Data. I have a list view that passes fetched data to a view that contains the individual objects in the list and another view where you can edit the data. However, when I edit the data, it doesn’t update it on the view until I quit and reopen the app.
So how would I go about manually (or preferably automatically) refreshing the view? I’ve heard that @FetchRequest is supposed to automatically refresh the view when any of the data is updated, but that doesn’t seem to be the case (unless of course I somehow missed some crucial line of code).
Any help would be greatly appreciated!
CodeSwiftUI
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So I created an SKSpriteNode subclass for my sprites. But whenever I retrieve the node(s) in the touched location (using nodes(at p: location), I can’t access the custom properties I that I had assigned to them earlier. Though I assume that’s because the retrieved node is of type SKSpriteNode as opposed to my custom type. So how would I go about either retrieving the node in my custom type or converting it to my custom type (while also retaining custom properties)?
Here's my subclass:
class Gift: SKSpriteNode {
var imageName: String
var giftColor: Color
init(imageName: String, giftColor: Color) {
self.imageName = imageName
self.giftColor = giftColor
let texture = SKTexture(imageNamed: imageName)
super.init(texture: texture, color: .clear, size: texture.size())
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
Here's where I initialized the sprites:
func initializeGifts() {
for i in 0...7 {
var giftRow: [Gift] = []
for j in 0...7 {
let color = randomColor()
let x: Int = (115 + 77 * j) - Int(size.width) / 2
let y: Int = -(205 + 85 * i) + Int(size.height) / 2
giftRow.append(Gift(imageName: "gift_\(color.rawValue)", giftColor: color))
giftRow[j].name = "\(color.rawValue)Gift"
giftRow[j].position = CGPoint(x: x, y: y)
giftRow[j].size = CGSize(width: 50, height: 58)
addChild(giftRow[j])
}
gifts.append(giftRow) //`gifts` is a 2d array
}
}
And here's where I retrieved the nodes that were tapped:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = touches.first else { return }
let location = touch.location(in: self)
let touchedNodes = nodes(at: location)
for node in touchedNodes {
print(node.giftColor) //Error: Value of type 'SKNode' has no member 'giftColor'
}
}
Any help would be greatly appreciated!