The code I wrote changes the language only if I restart the app, but I would like it to change language immediately.
It's possible to do it?
The language switch works fine, but only after I restart the app.
Maybe the problem is in the extension string?
Localizable.strings (it)
"label.language" = "Lingua";
Localizable.strings (en)
"label.language" = "Language";
struct ConstantFile {
static let labelLanguage = NSLocalizedString("label.language".localized, comment: "")
}
extension String {
var localized: String {
if let _ = UserDefaults.standard.string(forKey: "UserDefaultLanguage") {} else {
// setting value default
UserDefaults.standard.set(Language.italian.rawValue, forKey: "UserDefaultLanguage")
UserDefaults.standard.synchronize()
}
let lang = UserDefaults.standard.string(forKey: "UserDefaultLanguage")
let path = Bundle.main.path(forResource: lang, ofType: "lproj")
let bundle = Bundle(path: path!)
return NSLocalizedString(self, tableName: nil, bundle: bundle!, value: "", comment: "")
}
}
class ViewController: UIViewController {
#IBOutlet weak var labelTitleLanguage: UILabel!
let userDefaults = UserDefaults.standard
let LANGUAGE_KEY = "UserDefaultLanguage"
override func viewDidLoad() {
super.viewDidLoad()
labelTitleLanguage.text = ConstantFile.labelLanguage
}
#objc func tapBtnConfirmation(_ sender: UIButton) {
let list = list[self.pickerView.selectedRow(inComponent: 0)]
buttonPickerViewLanguage.setTitle(list, for: .normal)
if list == ConstantFile.labelLanguageItalian {
userDefaults.set(Language.italian.rawValue, forKey: LANGUAGE_KEY)
} else if list == ConstantFile.labelLanguageEnglish {
userDefaults.set(Language.english.rawValue, forKey: LANGUAGE_KEY)
}
}
}
You'll need to have a notification sent when changing language.
Then in your views, you observe this notification, and when it's raised, you update all translated texts in the view.
That's what I do
Related
I am making a small program using SwiftUI that allows users to create rich text "notes" in an NSTextView. I have enabled all of the formatting features from NSTextView, including the ability to work with images. The program is only for macOS and not for iOS/iPadOS.
The problem I am facing is that whenever the user types anything in the NSTextView, the caret moves to the end and all formatting and images disappear.
Since I am just using the standard formatting options provided by Apple, I have not subclassed NSTextStorage or anything like that. My use-case should be pretty simple.
The program is tiny so far and the entire source code is on GitHub (https://github.com/eiskalteschatten/ScratchPad), but I'll post the relevant code here.
This is my NSViewRepresentable class for the NSTextView:
import SwiftUI
struct RichTextEditor: NSViewRepresentable {
#EnvironmentObject var noteModel: NoteModel
func makeNSView(context: Context) -> NSScrollView {
let scrollView = NSTextView.scrollableTextView()
guard let textView = scrollView.documentView as? NSTextView else {
return scrollView
}
textView.isRichText = true
textView.allowsUndo = true
textView.allowsImageEditing = true
textView.allowsDocumentBackgroundColorChange = true
textView.allowsCharacterPickerTouchBarItem = true
textView.isAutomaticLinkDetectionEnabled = true
textView.displaysLinkToolTips = true
textView.isAutomaticDataDetectionEnabled = true
textView.isAutomaticTextReplacementEnabled = true
textView.isAutomaticDashSubstitutionEnabled = true
textView.isAutomaticSpellingCorrectionEnabled = true
textView.isAutomaticQuoteSubstitutionEnabled = true
textView.isAutomaticTextCompletionEnabled = true
textView.isContinuousSpellCheckingEnabled = true
textView.usesAdaptiveColorMappingForDarkAppearance = true
textView.usesInspectorBar = true
textView.usesRuler = true
textView.usesFindBar = true
textView.usesFontPanel = true
textView.importsGraphics = true
textView.delegate = context.coordinator
context.coordinator.textView = textView
return scrollView
}
func updateNSView(_ nsView: NSScrollView, context: Context) {
context.coordinator.textView?.textStorage?.setAttributedString(noteModel.noteContents)
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
class Coordinator: NSObject, NSTextViewDelegate {
var parent: RichTextEditor
var textView : NSTextView?
init(_ parent: RichTextEditor) {
self.parent = parent
}
func textDidChange(_ notification: Notification) {
guard let _textView = notification.object as? NSTextView else {
return
}
self.parent.noteModel.noteContents = _textView.attributedString()
}
}
}
On GitHub: https://github.com/eiskalteschatten/ScratchPad/blob/main/ScratchPad/Notes/RichTextEditor.swift
And this is my NoteModel class responsible for managing the NSTextView content:
import SwiftUI
import Combine
final class NoteModel: ObservableObject {
private var switchingPages = false
#Published var pageNumber = UserDefaults.standard.value(forKey: "pageNumber") as? Int ?? 1 {
didSet {
UserDefaults.standard.set(pageNumber, forKey: "pageNumber")
switchingPages = true
noteContents = NSAttributedString(string: "")
openNote()
switchingPages = false
}
}
#Published var noteContents = NSAttributedString(string: "") {
didSet {
if !switchingPages {
saveNote()
}
}
}
private var noteName: String {
return "\(NoteManager.NOTE_NAME_PREFIX)\(pageNumber).rtfd"
}
init() {
openNote()
}
private func openNote() {
// This is necessary, but macOS seems to recover the stale bookmark automatically, so don't handle it for now
var isStale = false
guard let bookmarkData = UserDefaults.standard.object(forKey: "storageLocationBookmarkData") as? Data,
let storageLocation = try? URL(resolvingBookmarkData: bookmarkData, options: .withSecurityScope, relativeTo: nil, bookmarkDataIsStale: &isStale)
else {
ErrorHandling.showErrorToUser("No storage location for your notes could be found!", informativeText: "Please try re-selecting your storage location in the settings.")
return
}
let fullURL = storageLocation.appendingPathComponent(noteName)
let options = [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.rtfd]
do {
guard storageLocation.startAccessingSecurityScopedResource() else {
ErrorHandling.showErrorToUser("ScratchPad is not allowed to access the storage location for your notes!", informativeText: "Please try re-selecting your storage location in the settings.")
return
}
if let _ = try? fullURL.checkResourceIsReachable() {
let attributedString = try NSAttributedString(url: fullURL, options: options, documentAttributes: nil)
noteContents = attributedString
}
fullURL.stopAccessingSecurityScopedResource()
} catch {
print(error)
ErrorHandling.showErrorToUser(error.localizedDescription)
}
}
private func saveNote() {
// This is necessary, but macOS seems to recover the stale bookmark automatically, so don't handle it for now
var isStale = false
guard let bookmarkData = UserDefaults.standard.object(forKey: "storageLocationBookmarkData") as? Data,
let storageLocation = try? URL(resolvingBookmarkData: bookmarkData, options: .withSecurityScope, relativeTo: nil, bookmarkDataIsStale: &isStale)
else {
ErrorHandling.showErrorToUser("No storage location for your notes could be found!", informativeText: "Please try re-selecting your storage location in the settings.")
return
}
let fullURL = storageLocation.appendingPathComponent(noteName)
do {
guard storageLocation.startAccessingSecurityScopedResource() else {
ErrorHandling.showErrorToUser("ScratchPad is not allowed to access the storage location for your notes!", informativeText: "Please try re-selecting your storage location in the settings.")
return
}
let rtdf = noteContents.rtfdFileWrapper(from: .init(location: 0, length: noteContents.length))
try rtdf?.write(to: fullURL, options: .atomic, originalContentsURL: nil)
fullURL.stopAccessingSecurityScopedResource()
} catch {
print(error)
ErrorHandling.showErrorToUser(error.localizedDescription)
}
}
}
On GitHub: https://github.com/eiskalteschatten/ScratchPad/blob/main/ScratchPad/Notes/NoteModel.swift
Does anyone have any idea why this is happening and/or how to fix it?
I have found these similar issues, but they don't really help me much:
Replacing NSAttributedString in NSTextStorage Moves NSTextView Cursor - I don't have any custom syntax highlighting or anything like that.
Cursor always jumps to the end of the UIViewRepresentable TextView when a newline is started before the final line + after last character on the line - Only solves the caret issue and causes jerky scroll behavior in longer documents.
Edit: I forgot to mention that I'm using macOS Ventura, but am targeting 12.0 or higher.
Edit #2: I have significantly updated the question to reflect what I've found through more debugging.
In my ThirdScreenViewController I change the variable number with the IBAction pressed.
import Foundation
import UIKit
class ThirdScreenViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
var weatherManager = WeatherManager()
var team = "leer"
static var number = 1
#IBAction func bayernMunchen(_ sender: UIButton) {
team = "bayernMunchen"
}
#IBAction func borussiaDortmund(_ sender: UIButton) {
team = "borussiaDortmund"
}
#IBAction func schalke(_ sender: UIButton) {
team = "schalke"
}
#IBAction func pressed(_ sender: UIButton) {
switch team {
case "bayernMunchen":
ThirdScreenViewController.number = 46
case "borussiaDortmund":
ThirdScreenViewController.number = 41
case "schalke":
ThirdScreenViewController.number = 45
default: print(8)
}
let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = storyBoard.instantiateViewController(withIdentifier: "WeatherViewController") as! WeatherViewController
self.present(nextViewController, animated:true, completion:nil)
}
}
In an other swift (not a View Controller) file I have a function which takes number and does something with it.
import Foundation
import UIKit
var TeamOne = ""
var TeamTwo = ""
var ScoreOne = ""
var ScoreTwo = ""
var TeamThree = ""
var TeamFour = ""
var ScoreThree = ""
var ScoreFour = ""
var cityName = ThirdScreenViewController.number
struct WeatherManager {
let weatherURL = "https://livescore-api.com/api-client/teams/matches.json?number=10&team_id=19&key=d33FTnnd6qwvEmjz&secret=BbO3REPYFXvb7fpkit0cQnpXNWssiL1U&number=3&team_id=\(cityName)"
func fetchWeather () {
let urlString = "\(weatherURL)"
perfromRequest(urlString: urlString)
}
func perfromRequest(urlString: String)
{
//1.Url erstellen
if let url = URL(string: urlString) {
//2. URLSession starten
let session = URLSession(configuration: .default)
//3. Give session a task
let task = session.dataTask(with: url) { (gettingInfo, response, error) in
if error != nil{
print(error!)
return
}
if let safeFile = gettingInfo {
self.parseJSON(weatherFile: safeFile)
}
}
//4. Start the task
task.resume()
}
}
//Das Ergebnis von oben wird hier ausgegeben
func parseJSON(weatherFile: Data) {
let decoder = JSONDecoder()
do{
let decodedFile = try decoder.decode(WeatherFile.self, from: weatherFile)
TeamOne = decodedFile.data[0].home_name
ScoreOne = decodedFile.data[0].score
TeamTwo = decodedFile.data[0].away_name
ScoreTwo = decodedFile.data[0].score
TeamThree = decodedFile.data[1].home_name
ScoreThree = decodedFile.data[1].score
TeamFour = decodedFile.data[1].away_name
ScoreFour = decodedFile.data[1].score
} catch {
print(error)
}
}
}
In a third swift file I use this func weatherManager.fetchWeather() to call what happens in my second swift file.
But here is the problem. It takes the variable number with the default value 1 and not with the value 41/46/45. What am I doing wrong?
Basically global variables outside of any class and static variables to share data is bad practice.
Apart from that to get the team ID dynamically delete the line
var cityName = ThirdScreenViewController.number
In the struct replace
let weatherURL = "https://livescore-api.com/api-client/teams/matches.json?number=10&team_id=19&key=d33FTnnd6qwvEmjz&secret=BbO3REPYFXvb7fpkit0cQnpXNWssiL1U&number=3&team_id=\(cityName)"
with
let weatherURL = "https://livescore-api.com/api-client/teams/matches.json?number=10&team_id=19&key=d33FTnnd6qwvEmjz&secret=BbO3REPYFXvb7fpkit0cQnpXNWssiL1U&number=3&team_id="
and
let urlString = "\(weatherURL)"
with
let urlString = weatherURL + String(ThirdScreenViewController.number)
Note: Consider to rename the weather related stuff to the team related stuff
I've had the same problem for a few days now and it's been killing me. Whenever I run my script, I get a EXC_BAD_INSTRUCTION. It happens when I add an array of objects to an NSArrayController, bount to an NSTableView. Below is my code:
AppDelegate.swift:
import Cocoa
#NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
#IBOutlet weak var window: NSWindow!
#IBOutlet weak var mainTabView: NSTabView!
#IBOutlet weak var tracksAC: NSArrayController!
#IBOutlet weak var albumsAC: NSArrayController!
func checkIfFileExists(atPath path: String, isDirectory: Bool = false, createIfNeeded createNew: Bool = false) -> Int {
var isDir: ObjCBool = ObjCBool(isDirectory)
if !FileManager.default.fileExists(atPath: path, isDirectory: &isDir) {
if createNew {
do {
if isDirectory {
try FileManager.default.createDirectory(atPath: path, withIntermediateDirectories: true)
}else{
FileManager.default.createFile(atPath: path, contents: nil)
}
return 2
}catch{
return 3
}
}else{
return 0
}
}
return 1
}
func applicationDidFinishLaunching(_ aNotification: Notification) {
//Create application support folder if it's not existent and populate with all needed files
let paths = NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true)
let appSupportDir = paths[0] + "/Project Alpha"
//Create application folder if needed
let folderStatus = checkIfFileExists(atPath: appSupportDir, isDirectory: true, createIfNeeded: true)
if folderStatus == 1 || folderStatus == 2 {
_ = checkIfFileExists(atPath: appSupportDir + "/Songs.txt", createIfNeeded: true)
_ = checkIfFileExists(atPath: appSupportDir + "/Albums.txt", createIfNeeded: true)
_ = checkIfFileExists(atPath: appSupportDir + "/Genres.txt", createIfNeeded: true)
}
//Populate tracks table view
let tracks = getTracks()
print(tracks[0].name)
tracksAC.add(contentsOf: tracks) //This is where the error occures every time
}
func applicationWillTerminate(_ aNotification: Notification) {
// Insert code here to tear down your application
}
#IBAction func openAlbumsTab(_ sender: NSToolbarItem) {
mainTabView.selectTabViewItem(at: 1)
}
}
Classes.swift:
import Cocoa
class Track: NSObject {
func getLine() -> String? {
let songsFilePath = NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true)[0] + "/Project Alpha/Songs.txt"
do {
let content = try String(contentsOfFile: songsFilePath)
let lines = content.components(separatedBy: "---===---")
let line = lines.first(where: {$0.hasPrefix(String(self.identifier) + ";")})
return line
}catch{
return nil
}
}
var identifier: Int
var name: String
var artist: String
var album: String
var genre: String
var vocals: String
var trackNumber: Int
init(line: String) {
let items = line.components(separatedBy: ";")
print(items)
self.identifier = Int(items[0])!
self.name = String(items[1])
self.artist = String(items[2])
self.genre = String(items[3])
self.vocals = String(items[4])
self.album = String(items[5])
self.trackNumber = Int(items[6])!
}
}
I have checked the getTracks function and normally it does return a list of Track objects, so I really don't know what's causing the error. The columns are bound to the array controller as shown via the link below:
screenshot
Any help would be greatly appreciated. Thanks in advance.
I am fairly new to Swift, but getting better.
I have managed to disable a button and store the date. And at this point I have reached the end of my knowledge, so I am hoping someone can help.
The button then needs to be enabled the next day by checking against the date stored, so the user can only use the function once per day.
code is as follows;
import Foundation
import UIKit
class tryForAFiver : UIViewController {
#IBOutlet weak var drinkImage: UIImageView!
#IBOutlet weak var redeemButton: UIButton!
override func viewDidLoad() {
self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
}
#IBAction func redeemButton(_ sender: Any) {
let cocktailNumber = arc4random_uniform(32)
drinkImage.image = UIImage(named: "cocktailList\(cocktailNumber)")
let userDefaults = UserDefaults.standard
if var timeList = userDefaults.object(forKey: "timeList") as? [NSDate]
{
timeList.append(NSDate())
userDefaults.set(timeList, forKey: "timeList")
}
else
{
userDefaults.set([NSDate()], forKey: "timeList")
}
userDefaults.synchronize()
if let timeList = UserDefaults.standard.object(forKey: "timeList") as? [NSDate]
{
print(timeList)
}
self.redeemButton.isEnabled = false
}
}
thanks in advance for any help.
I made some changes to your code. Is it OK to use Date() instead of NSDate()? It's easier to work with in Swift.
Button action:
#IBAction func redeemButton(_ sender: Any) {
let userDefaults = UserDefaults.standard
if var timeList = userDefaults.object(forKey: "timeList") as? [Date]
{
timeList.append(Date())
userDefaults.set(timeList, forKey: "timeList")
}
else
{
userDefaults.set([Date()], forKey: "timeList")
}
userDefaults.synchronize()
if let timeList = UserDefaults.standard.object(forKey: "timeList") as? [Date]
{
print(timeList)
}
self.redeemButton.isEnabled = false
}
And on viewDidLoad()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
if let timeList = UserDefaults.standard.object(forKey: "timeList") as? [Date], let lastDay = timeList.last
{
if Calendar.current.isDateInToday(lastDay) {
self.redeemButton.isEnabled = false
}
else {
self.redeemButton.isEnabled = true
}
}
}
This should get you on the right track. A word of warning: neither UserDefaults() nor Date() are safe for doing this kind of thing. Both are easily modified by the client. You should do a server check also if it's important.
I am trying to currently display the album artwork for a locally stored .MP3 track in an ImageView. Does anyone know how to fetch this artwork in Swift in order to accomplish this?
I have found this solution (iOS AVFoundation: How do I fetch artwork from an mp3 file?) but the code is written in Objective C. I simply want to grab the image embedded in my MP3 and display it in my ImageView.
I've looked at the API documentation for the MPMediaItemArtwork and found an example that also accomplishes what I am trying to accomplish in Objective C as well here(http://www.codeitive.com/0zHjkUjUWX/not-able-to-get-the-uiimage-from-mpmediaitempropertyartwork.html) but cannot come up with a solution. My code is as follows:
import UIKit
import AVFoundation
import MediaPlayer
class ViewController: UIViewController {
let audioPath:NSURL! = NSBundle.mainBundle().URLForResource("SippinOnFire", withExtension: "mp3")
#IBOutlet var artistImage: UIImageView!
#IBOutlet var trackLabel: UILabel!
#IBOutlet var artistLabel: UILabel!
#IBOutlet var sliderValue: UISlider!
var player:AVAudioPlayer = AVAudioPlayer()
#IBAction func play(sender: AnyObject) {
let audioInfo = MPNowPlayingInfoCenter.defaultCenter()
println(audioInfo)
player.play()
//println("Playing \(audioPath)")
let playerItem = AVPlayerItem(URL: audioPath)
let metadataList = playerItem.asset.metadata as! [AVMetadataItem]
for item in metadataList {
if let stringValue = item.value {
println(item.commonKey)
if item.commonKey == "title" {
trackLabel.text = stringValue as? String
}
if item.commonKey == "artist" {
artistLabel.text = stringValue as? String
}
if item.commonKey == "artwork" {
if let audioImage = UIImage(data: item.value as! NSData) {
let audioArtwork = MPMediaItemArtwork(image: audioImage)
println(audioImage.description)
}
}
}
}
}
#IBAction func pause(sender: AnyObject) {
player.pause()
}
#IBAction func stop(sender: AnyObject) {
player.stop()
player.currentTime = 0;
}
#IBAction func sliderChanged(sender: AnyObject) {
player.volume = sliderValue.value
}
override func viewDidLoad() {
super.viewDidLoad()
var error:NSError? = nil
player = AVAudioPlayer(contentsOfURL: audioPath!, error: &error)
player.volume = 0.5;
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Here is a screen shot of my sample .mp3 file. As you can see there is indeed album artwork that is both visible in the "get info" section of Finder. I've also opened the .mp3 in my iTunes to make sure and have confirmed there is artwork in the "get info" section of it there as well as under the "artwork" tab.
However, when trying to use the commonKey to assign the image to my imageView I find that there is no commonKey for "artwork".
Thanks
Change your snippet of code into this (I already tested it):
I added println lines commented in places of interest, Feel free to uncomment in order to see what is happening.
for item in metadataList {
if item.commonKey == nil{
continue
}
if let key = item.commonKey, let value = item.value {
//println(key)
//println(value)
if key == "title" {
trackLabel.text = value as? String
}
if key == "artist" {
artistLabel.text = value as? String
}
if key == "artwork" {
if let audioImage = UIImage(data: value as! NSData) {
//println(audioImage.description)
artistImage.image = audioImage
}
}
}
}
UPDATE: A bit of clean up of this code
for item in metadataList {
guard let key = item.commonKey, let value = item.value else{
continue
}
switch key {
case "title" : trackLabel.text = value as? String
case "artist": artistLabel.text = value as? String
case "artwork" where value is NSData : artistImage.image = UIImage(data: value as! NSData)
default:
continue
}
}
UPDATE: For Swift 4
for item in metadataList {
guard let key = item.commonKey?.rawValue, let value = item.value else{
continue
}
switch key {
case "title" : trackLabel.text = value as? String
case "artist": artistLabel.text = value as? String
case "artwork" where value is Data : artistImage.image = UIImage(data: value as! Data)
default:
continue
}
}
edit/update Swift 4 or later:
import MediaPlayer
var nowPlayingInfo: [String: Any] = [:]
let playerItem = AVPlayerItem(url: url)
let metadataList = playerItem.asset.metadata
for item in metadataList {
switch item.commonKey {
case .commonKeyTitle?:
nowPlayingInfo[MPMediaItemPropertyTitle] = item.stringValue ?? ""
case .commonKeyType?:
nowPlayingInfo[MPMediaItemPropertyGenre] = item.stringValue ?? ""
case .commonKeyAlbumName?:
nowPlayingInfo[MPMediaItemPropertyAlbumTitle] = item.stringValue ?? ""
case .commonKeyArtist?:
nowPlayingInfo[MPMediaItemPropertyArtist] = item.stringValue ?? ""
case .commonKeyArtwork?:
if let data = item.dataValue,
let image = UIImage(data: data) {
nowPlayingInfo[MPMediaItemPropertyArtwork] = MPMediaItemArtwork(boundsSize: image.size) { _ in image }
}
case .none: break
default: break
}
}
let audioInfo = MPNowPlayingInfoCenter.default()
audioInfo.nowPlayingInfo = nowPlayingInfo
Note: You will have to invoke beginReceivingRemoteControlEvents() otherwise it will not work on the actual device. You will also need to set your app Background Modes (Audio and AirPlay) and set your AVAudioSession category to AVAudioSessionCategoryPlayback and set it active:
do {
try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [.mixWithOthers, .allowAirPlay])
print("Playback OK")
try AVAudioSession.sharedInstance().setActive(true)
print("Session is Active")
} catch {
print(error)
}
Try this:
It appears that sometimes iOS 8 returns nil at first attempt of obtaining this info:
if let audioCenter = MPNowPlayingInfoCenter.defaultCenter(){
if let audioInfo = audioCenter.nowPlayingInfo{
if let artwork = audioInfo[MPMediaItemPropertyArtwork] as? MPMediaItemArtwork
{
var image: UIImage? = artwork.imageWithSize(artwork.bounds.size)
if image == nil {
image = artwork.imageWithSize(artwork.bounds.size);
}
if image != nil{
println("image loaded")
}
}
}
}