What I'm trying to do is store some data from a MacOS App with NSDocument provided class in a file. I decided to use SwiftUI , but all tutorials I found are using Storyboards. And from those I cannot adapt how to get the data from my textfield into my NSDocument class.
As far as I got it I need to init my variables in the NSDocument class like this
class Document: NSDocument {
#objc dynamic var contents = "Foo"
public init(contentString: String) {
self.contents = contentString
}
/* ... */
}
and in the same class I can save this string using
override func data(ofType typeName: String) throws -> Data {
return contents.data(using: .utf8) ?? Data()
throw NSError(domain: NSOSStatusErrorDomain, code: unimpErr, userInfo: nil)
}
So in my view generated with SwiftUI I can access this using
struct MainTableView: View {
#State var doc = Document.init()
var body: some View {
TextField("My text", text: self.$doc.contents)
}
}
But - as I'm using only an instance it always saves "Foo" - no matter what I type into my TextField.
Besides - another question that will follow up right away: On the long run I don't want to store a string only. I'll have 3 different 2D-Arrays with different data-structures. Is NSDocument able to handle this by itself or do I need to convert those to JSON/XML/...-String and store this as a file?
I know how to add an AccessoryView to an NSOpenPanel (and that works correctly).
Now I would like to make the options that the user selects in the AccessoryView available to the document that is opened.
Any suggestions how that can be doen (if at all?)
I have not found a standard solution, so I created my own:
Introduced a dictionary in the NSDocumentController that associates file URLs with option sets
Override the runModalOpenPanel and wrap the runModalOpenPanel of super with first the setup of the accessory view, and afterwards the evaluation of the options and adding of the options to the dictionary for the associated urls.
When a document is opened, the document can -through the shared NSDocumentController- access the dictionary and retrieve the options.
I am not blown away by this solution, but I also do not see an easier path.
Example code:
struct OptionsAtFileOpen {
let alsoLoadFormat: Bool
}
class DocumentController: NSDocumentController {
var fileOptions: Dictionary<URL, OptionsAtFileOpen> = [:]
var accessoryViewController: OpenPanelAccessoryViewController!
override func runModalOpenPanel(_ openPanel: NSOpenPanel, forTypes types: [String]?) -> Int {
// Load accessory view
let accessoryViewController = OpenPanelAccessoryViewController(nibName: NSNib.Name(rawValue: "OpenPanelAccessoryView"), bundle: nil)
// Add accessory view and make sure it is shown
openPanel.accessoryView = accessoryViewController.view
openPanel.isAccessoryViewDisclosed = true
// Run the dialog
let result = super.runModalOpenPanel(openPanel, forTypes: types)
// If not cancelled, add the files to open to the fileOptions dictionary
if result == 1 {
// Return the state of the checkbox that selects the loading of the formatting file
let alsoLoadFormat = accessoryViewController.alsoLoadFormatFile.state == NSControl.StateValue.on
for url in openPanel.urls {
fileOptions[url] = OptionsAtFileOpen(alsoLoadFormat: alsoLoadFormat)
}
}
return result
}
}
And then in Document
override func read(from data: Data, ofType typeName: String) throws {
...
if let fileUrl = fileURL {
if let dc = (NSDocumentController.shared as? DocumentController) {
if let loadFormat = dc.fileOptions[fileUrl]?.alsoLoadFormat {
...
}
}
}
}
I am importing data from JSON to be used as the models for some items in a CollectionView, and it seems that they are being initialized, and with the correct number of elements. But for some reason the representedObject (aliased as morpheme below) is returning nil initially. Hence the placeholder if nil values being the ones showing up.
If you click the items, I have it set up to show up in the log the name of the item clicked, and it works fine, and doesn't return the debugging defaults. So I'm guessing there is a concurrency issue going on.
For more details, this are items being manually prototyped because XCode 7 still hasn't fixed the segue bug with collection item prototypes.
Here is a screenshot I hopefully managed to get it all the important info in:
Here is the cell's controller/delagating class code in detail:
///Acts as view controller for the items of the morpheme collection
public class MorphemeCell: NSCollectionViewItem, NSTextViewDelegate{
var backgroundColor = NSColor.clearColor()
var morphemeLabel: String{
get{
return morpheme?.morphemeDisplayName ?? "Morpheme"
}
}
var allomorphsLabel: String{
get{
return (morpheme?.allomorphsAsString ?? "Allomorphs")
}
}
///The morpheme data contained in the cell
public var morpheme : Morpheme?{
get{
return representedObject as? Morpheme
}
set{
representedObject = newValue
}
}
required public init?(coder: NSCoder) {
super.init(coder: coder)
}
///Detects clicks on each item
public override func mouseUp(theEvent: NSEvent) {
Swift.print("Clicked on " + morphemeLabel)
backgroundColor = NSColor.blueColor()
}
}
Not sure if this is needed, but just in case here is the main window's ViewController doing some setup/loading functionality.
The loading code itself:
///Loads morpheme data into memory and then into the collection view
func loadMorphemeData(){
//Open morphemes.json and begin parsing
let morphemeDataPath = "morphemes"
if let file = NSBundle.mainBundle().URLForResource(morphemeDataPath, withExtension: "json")
{
let data = NSData(contentsOfURL: file)
let json = JSON(data:data!)
//Create Morpheme objects passing in JSON elements
for morphemeElement in json{
let toAdd = Morpheme(JSONElement: morphemeElement)
fullMorphemesList.append(toAdd)
}
///TODO Use full range or filters in final product
let morphemesToLoad = fullMorphemesList[0...100]
collectionView.content.appendContentsOf(Array(morphemesToLoad) as [AnyObject])
}
else
{
print("Resource Failure")
}
So, recap: It seems that I either need to delay the collectionView's setup, or find out how to update the Labels once the data is in.
Thanks very much for any help! I'm very new to the Cocoa framework so it's been a doozy.
Take different route: bind your label to self.morpheme.morphemeDisplayName. Then set "Null Placeholder" text to be "Morpheme" (in that right panel see the list of text edits below binding settings). Finally make property morphemeDisplayName dynamic:
dynamic var morphemeDisplayName: String?
Obviously, you dont need morphemeLabel property inside cell anymore.
morpheme property of cell must be dynamic as well, or if there is setter-based property, you can call:
set {
willChangeValueForKey("morpheme")
<whatever variable> = newValue
didChangeValueForKey("morpheme")
}
Edit by original poster:
Also, in order to avoid binding synchrony issues, it turns out using viewWillAppear() instead of viewDidLoad() was causing issues with data loading and "freezing the labels".
How do I get the application name in Swift?
Googling gave me this:
[[[NSBundle mainBundle] infoDictionary] objectForKey:#"CFBundleName"];
I converted it to Swift; error - method doesn't exist:
NSBundle.mainBundle().infoDictionary.objectForKey("CFBundleName")
This should work:
NSBundle.mainBundle().infoDictionary!["CFBundleName"] as! String
infoDictionary is declared as a var infoDictionary: [NSObject : AnyObject]! so you have to unwrap it, access it as a Swift dictionary (rather than use objectForKey), and, as the result is an AnyObject, cast it.
Update Swift 3 (Xcode 8 beta 2)
Always better to use constants (and optionals) where possible, too:
Bundle.main.infoDictionary?[kCFBundleNameKey as String] as? String
I believe this solution is more elegant. What's more, using object(forInfoDictionaryKey:) is encouraged by Apple:
"Use of this method is preferred over other access methods because it returns the localized value of a key when one is available."
extension Bundle {
var displayName: String? {
return object(forInfoDictionaryKey: "CFBundleDisplayName") as? String
}
}
Accessing bundle display name:
if let displayName = Bundle.main.displayName {
print(displayName)
}
I have created a simple extension to get the app name that is shown under the icon on the Home screen.
By default, apps only have CFBundleName set. Some apps, however, set CFBundleDisplayName (The user-visible name of the bundle) to change the title under the app icon. Adding spaces is often the case, e.g. bundle name "ExampleApp" could have bundle display name set to "Example App".
extension Bundle {
// Name of the app - title under the icon.
var displayName: String? {
return object(forInfoDictionaryKey: "CFBundleDisplayName") as? String ??
object(forInfoDictionaryKey: "CFBundleName") as? String
}
}
Usage:
let appName = Bundle.main.displayName
Same answer in Swift 4.2
extension Bundle {
class var applicationName: String {
if let displayName: String = Bundle.main.infoDictionary?["CFBundleDisplayName"] as? String {
return displayName
} else if let name: String = Bundle.main.infoDictionary?["CFBundleName"] as? String {
return name
}
return "No Name Found"
}
}
you can use it like below
Bundle.applicationName
OR, An other way would be to avoid static or class method or property but to add to instance level.
extension Bundle {
var applicationName: String {
if let displayName: String = self.infoDictionary?["CFBundleDisplayName"] as? String {
return displayName
} else if let name: String = self.infoDictionary?["CFBundleName"] as? String {
return name
}
return "No Name Found"
}
}
and all it like following
Bundle.main.applicationName
Hope this helps :)
Swift 4
let appName = Bundle.main.object(forInfoDictionaryKey: "CFBundleDisplayName") as! String
simple way:
let appName = NSBundle.mainBundle().infoDictionary?[kCFBundleNameKey as String] as? String
convenient way:
extension NSBundle {
class func mainInfoDictionary(key: CFString) -> String? {
return self.mainBundle().infoDictionary?[key as String] as? String
}
}
print(NSBundle.mainInfoDictionary(kCFBundleNameKey))
kCFBundleNameKey – Standard Info.plist key, see more in CFBundle
// Returns app's name
public static var appDisplayName: String? {
if let bundleDisplayName = Bundle.main.object(forInfoDictionaryKey: "CFBundleDisplayName") as? String {
return bundleDisplayName
} else if let bundleName = Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String {
return bundleName
}
return nil
}
let appDisplayName = Bundle.main.infoDictionary?["CFBundleName"] as? String
It's optional, so put it in if let or guard statement.
All answers that just return CFBundleName will often not return the name the user expects, as if bundles have a CFBundleDisplayName, then this key is displayed by Finder, system frameworks, and most other apps.
Most answers just directly access the info dictionary but info dictionaries can be localized by string files and when accessing them directly, this localization is also ignored and thus again a wrong name may be returned, as Finder will display the localized name.
While CFBundleDisplayName is optional in Info.plist files, CFBundleName actually isn't, but if you forget to add it, nothing will break in your system, so you have a corrupt info dict, yet most users will probably never notice and in that case the code most answers may not return anything meaningful at all.
Here's my solution (Swift 3):
private
func stripFileExtension ( _ filename: String ) -> String {
var components = filename.components(separatedBy: ".")
guard components.count > 1 else { return filename }
components.removeLast()
return components.joined(separator: ".")
}
func nameOfApp ( ) -> String {
let bundle = Bundle.main
if let name = bundle.object(forInfoDictionaryKey: "CFBundleDisplayName")
?? bundle.object(forInfoDictionaryKey: kCFBundleNameKey as String),
let stringName = name as? String
{ return stringName }
let bundleURL = bundle.bundleURL
let filename = bundleURL.lastPathComponent
return stripFileExtension(filename)
}
How is this solution better?
It will check CFBundleDisplayName first and only fall back to CFBundleName if not present.
The object() method always operates on the localized version of the info dictionary, so if a localization exists, it will automatically be used.
If neither CFBundleDisplayName nor CFBundleName exist in the dictionary, the code falls back to just using the bundle filename on disk without the extension (so "My Cool App.app" will be "My Cool App"), this is a fallback so that this function will never return nil.
This one works for me in Swift 4.2
guard let dictionary = Bundle.main.infoDictionary else { return "" }
if let version: String = dictionary["CFBundleDisplayName"] as? String {
return version
} else {
return ""
}
This is what worked for me in Xcode 11.0 and Swift 5
let bundleID = Bundle.main.bundleIdentifier
let bundleInfoDict: NSDictionary = Bundle.main.infoDictionary! as NSDictionary
let appName = bundleInfoDict["CFBundleName"] as! String
print(bundleID!)
print(appName)
This should be more like what you are looking for:
let infoDictionary: NSDictionary = NSBundle.mainBundle().infoDictionary as NSDictionary!
let appName: NSString = infoDictionary.objectForKey("CFBundleName") as NSString
NSLog("Name \(appName)")
There may still be a better way to do this but it at least returns the app name correctly in my very limited testing...
Try this:
extension Bundle {
var displayName: String {
let name = object(forInfoDictionaryKey: "CFBundleDisplayName") as? String
return name ?? object(forInfoDictionaryKey: kCFBundleNameKey as String) as! String
}
}
let bundleInfoDict: NSDictionary = NSBundle.mainBundle().infoDictionary!
let appName = bundleInfoDict["CFBundleName"] as String
This one works perfect for me
let appName = NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleDisplayName") as! String
For swift 5, iOS 13*
As mentioned before, it‘s an optional, so put it in a guard statement. I do this using a struct:
struct Model {
struct ProgVariablen{
static var appBundleName:String {
get {guard Bundle.main.infoDictionary != nil else {return ""}
return Bundle.main.infoDictionary!["CFBundleName"] as! String
}//end get
}//end computed property
static var appBundleShortVersion:String {
get {guard Bundle.main.infoDictionary != nil else {return ""}
return Bundle.main.infoDictionary ["CFBundleShortVersionString"] as! String
}//end get
}//end computed property
static var appBundleBuild:String {
get {guard Bundle.main.infoDictionary != nil else {return ""}
return Bundle.main.infoDictionary["CFBundleVersion"] as! String
}//end get
}//end computed property
//initialsieren der Variablen
init(
appBundleName:String,
appBundleShortVersion:String,
appBundleBuild:String,
)
{
// do here nothing for 'let'
// do here nothing for 'computed properties'
// your other ‘var’ are here like:
// ProgVariablen.var1 = var1
}//end init
}//end struct ProgVariablen
}//end struct Model
Usage:
print("Model.ProgVariablen.appBundleName: '\(Model.ProgVariablen.appBundleName)'")
extension NSApplication {
static var name: String {
Bundle.main.object(forInfoDictionaryKey: kCFBundleNameKey as String) as? String ?? ProcessInfo.processInfo.processName
}
}
// Bundle+appName.swift
extension Bundle {
var appName: String {
object(forInfoDictionaryKey: "CFBundleDisplayName") as? String ??
object(forInfoDictionaryKey: "CFBundleName") as? String ??
""
}
}
// Usage (non optional)
let appName = Bundle.main.appName
Try this one,
let bundleID = NSBundle.mainBundle().bundleIdentifier
I'm trying to update a progress bar with the progress of loading a load of values into CoreData. However, whenever I try to call an update on my progressView component, I get a fatal error stating that "unexpectedly found nil while unwrapping an Optional value".
The interesting thing is that this happens even if I put 'self.progressView.progress = 0.5' in the delegate method of my program - indicating that it's the progressView component it can't find rather than an issue with the value. A quick check with println also confirms the value does exist and so isn't nil. Note that if I put the 'self.progressView.progress = 0.5' statement under a function connected directly to a button, it works fine so it must be some sort of issue with the command being called from the delegate.
Can anyone work out what I'm doing wrong here? Thanks for your help.
Delegate method:
class ViewControllerUpdate: UIViewController, NSURLSessionDelegate, NSURLSessionDownloadDelegate, saveUpdate {
[....]
func updateStatus(status: String, progress: Float?) {
if let percentProgress = progress? {
self.progressView.progress = 0.5
}
//println(progress) - NOTE THIS IS CORRECTLY POPULATED WITH THE APPROPRIATE VALUE
}
Calling class:
protocol saveUpdate {
func updateStatus(status:String, progress:Float?)
}
class sqlPullSave {
let classtoUpdate: saveUpdate = ViewControllerUpdate()
func saveTSVtoSQL(fromFile: NSURL) -> Int {
//Load up the information into a Dictionary (tsv)
//let tsvURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource(fromFileName, ofType: fromFileExtension)!)
let tsvURL: NSURL = fromFile
let tab = NSCharacterSet(charactersInString: "\t")
let tsv = CSV(contentsOfURL: tsvURL, separator: tab)
//let defResult: AnyObject = tsv.rows[0]["Name"]!
//let tryagain:String = AnyObjecttoString(tsv.rows[1]["Name"]!)
//load the data into the SQLite database...
dispatch_async(dispatch_get_main_queue()) {
for a in 0..<tsv.rows.count {
self.SQLsaveLine(self.AnyObjecttoString(tsv.rows[a]["Name"]!),
name_l: "",
desc: self.AnyObjecttoString(tsv.rows[a]["1"]!),
jobTitle: self.AnyObjecttoString(tsv.rows[a]["2"]!),
extn: self.AnyObjecttoString(tsv.rows[a]["3"]!)
// update status
var percentComplete: Float = (Float(a) / Float(tsv.rows.count))
self.classtoUpdate.self.updateStatus("SQLload", progress: percentComplete)
}
}
return 0
}