User Profile

Posts

Posts

Post marked as solved
3 Replies
871 Views

objc_copyClassList() not enumerable?

This is a derivative of this and this. On iOS 15(.3.1), if I just try to fetch and enumerate the classes of the objc runtime, waiting until viewDidAppear() to make sure there wasn't some initialization issue: var count = UInt32(0) var classList = objc_copyClassList(&count)! print("COUNT \(count)") print("CLASS LIST \(classList)") for i in 0..<Int(count) { print("\(i)") classList[i] } produces the following before a Thread 1: EXC_BREAKPOINT (code=1, subcode=0x1820e0cdc) COUNT 28353 CLASS LIST 0x000000010bf24000 0 1 2 2022-02-17 16:24:02.977904-0800 TWiG V[2504:705046] *** NSForwarding: warning: object 0x1dbd32148 of class '__NSGenericDeallocHandler' does not implement methodSignatureForSelector: -- trouble ahead 2022-02-17 16:24:02.978001-0800 TWiG V[2504:705046] *** NSForwarding: warning: object 0x1dbd32148 of class '__NSGenericDeallocHandler' does not implement doesNotRecognizeSelector: -- abort I don't know how to do any less with it than just fetching the value. I'm not trying to print it or anything, and yet it still fails. Is there some magic I'm missing? Why have the API if the results crash your program? If the issue is legit, it would be nice of the docs pointed out a workaround, or at least the proper way to cope with the result. (I do not have hardened runtime turned on, XCode 13.2.1)
Posted
by LordOfTheFries.
Last updated
.
Post not yet marked as solved
1 Replies
597 Views

HSplitView of Lists initial layout

I'm trying to create a macos app and wanted to play with SwiftUI. My goal is a window with 4 lists arranged horizontally across the top, and the lower half as TextEditor. My attempt at this was: struct ContentView: View { @State private var fullText: String = "Bazinga" var body: some View { VSplitView() { HSplitView() { List() { Text("Alpha") Text("Bravo") Text("Charlie") } List() { Text("Protons") Text("Electrons") Text("Neutrons") } List() { Text("Blueberries") Text("Strawberries") Text("Cherries") } List() { Text("Ford") Text("Chevy") Text("Dodge") } } TextEditor(text: $fullText) .lineSpacing(2) } } } What I see when I open the window initially though is: What do I change to get the 4 lists to be evenly distributed across the top? It manages to show both the TextEditor and the upper half, but only one of the 4 lists. I note that the drag bars are there on the edge, and I can drag them to get the layout desired: So my real question is how do I get to look like this initially?
Posted
by LordOfTheFries.
Last updated
.