I've created a customized keyboard using UIView. I'm trying to auto-fill the letters using a for loop but with no success.
func initializeSubviews() {
let xibFileName = "keyboardView" // xib extension not included b
let view = Bundle.main.loadNibNamed(xibFileName, owner: self, options: nil)![0] as! UIView
self.addSubview(view)
view.frame = self.bounds
setKeyboardText()
}
#IBOutlet var keyboardLetters: [myKeyboardBtn]!
func setKeyboardText() {
let str = "abcdefghijklmnopqrstuvwxyz"
let characterArray = Array(str)
for (Index, key) in keyboardLetters.enumerated() {
key.titleLabel?.text = String(characterArray[Index])
}
// [a,b,c,d,...]
}
what am I doing wrong?
According to Apple
"To set the actual text of the label, use setTitle(_:for:)
(button.titleLabel.text does not let you set the text)."
Related
Hi im making an app with uikit and i want to set a profile image(received from url) on Tabbar item. I am expecting the updated profile image on TabBarItem. Also i want to add a border around the image when the tab is selected.
I found this solution, but the image does not appear in the tabitem.
Set user's profile picture on Tabbar item
extension UITabBarController {
func addSubviewToLastTabItem(_ image: UIImage) {
if let lastTabBarButton = self.tabBar.subviews.last, let tabItemImageView = lastTabBarButton.subviews.first {
if let accountTabBarItem = self.tabBar.items?.last {
accountTabBarItem.selectedImage = nil
accountTabBarItem.image = nil
}
let imgView = UIImageView()
imgView.frame = tabItemImageView.frame
imgView.layer.cornerRadius = tabItemImageView.frame.height/2
imgView.layer.masksToBounds = true
imgView.contentMode = .scaleAspectFill
imgView.clipsToBounds = true
imgView.image = image
self.tabBar.subviews.last?.addSubview(imgView)
}
}
}
Could someone help me to do that?
Did you add the second part of code:
let yourImage = UIImage(named: "your-image")
override func viewDidLayoutSubviews() { // add to any vc
super.viewDidLayoutSubviews()
tabBarController?.addSubviewToLastTabItem(yourImage)
}
When you call addSubviewToLastTabItem("String") it is critical print correctly parameter without mistakes.
Could you post this part of code?
One more thing viewDidLayoutSubviews will work if you rotate iPhone, double check please that you are calling addSubviewToLastTabItem() in viewDidLoad()
I am trying to combine my custom touch bar items together with the automatic text suggestions in the touch bar while editing text field.
Currently i am overriding makeTouchBar in custom NSTextView class, if i wont do that, the default touch bar will be created for the textView.
This is the main makeTouchBar, where i try to add the suggestions with item identifier .candidateList, but no luck:
extension ViewController: NSTouchBarDelegate {
override func makeTouchBar() -> NSTouchBar? {
let touchBar = NSTouchBar()
touchBar.delegate = self
touchBar.customizationIdentifier = .myBar
touchBar.defaultItemIdentifiers = [.itemId1,
.flexibleSpace,
.itemId2,
.itemId3,
.flexibleSpace,
.candidateList]
touchBar.customizationAllowedItemIdentifiers = [.itemId1]
return touchBar
}
}
Can someone provide a simple example of how to add this words suggestions item to a custom touch bar?
Easy. Just call super in your custom NSTextView class:
override func makeTouchBar() -> NSTouchBar {
var touchBar = super.makeTouchBar()
touchBar.delegate = self
var defaultIdentifiers = [Any](arrayLiteral:touchBar.defaultItemIdentifiers)
defaultIdentifiers.insert("CustomLabel", at: 0)
touchBar.defaultItemIdentifiers = defaultIdentifiers
return touchBar
}
override func touchBar(_ touchBar: NSTouchBar, makeItemFor identifier: NSTouchBarItemIdentifier) -> NSTouchBarItem {
if (identifier == "CustomLabel") {
var button = NSButton(title: "Custom", target: self, action: nil)
var item = NSCustomTouchBarItem(identifier: "CustomLabel")
item.view = button
item.customizationLabel = "Custom"
return item
}
else {
return super.touchBar(touchBar, makeItemFor: identifier)
}
return nil
}
I was just wondering how would I be able to use a searched barcode to fetch using Core Data in Swift. I'm basically passing a barcode to a static func method, but how would I be able to use that to fetch the data from the Core Data?
Here is the barcode when detected:
func barcodeDetected(code: String) {
// Let the user know we've found something.
let alert = UIAlertController(title: "Found a Barcode!", message: code, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Search", style: UIAlertActionStyle.Destructive, handler: { action in
// Remove the spaces.
let trimmedCode = code.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet())
// EAN or UPC?
// Check for added "0" at beginning of code.
let trimmedCodeString = "\(trimmedCode)"
var trimmedCodeNoZero: String
if trimmedCodeString.hasPrefix("0") && trimmedCodeString.characters.count > 1 {
trimmedCodeNoZero = String(trimmedCodeString.characters.dropFirst())
// Send the doctored barcode
ProductDetailsViewController.searchCode(trimmedCodeNoZero)
} else {
// Send the doctored barcode
ProductDetailsViewController.searchCode(trimmedCodeString)
}
self.navigationController?.popViewControllerAnimated(true)
}))
self.presentViewController(alert, animated: true, completion: nil)
}
My Product Class:
import UIKit
import Foundation
import CoreData
class ProductDetailsViewController: UIViewController, NSFetchedResultsControllerDelegate {
#IBOutlet weak var productLabel: UILabel!
#IBOutlet weak var priceLabel: UILabel!
#IBAction func addProduct(sender: AnyObject) {
let AppDel = UIApplication.sharedApplication().delegate as? AppDelegate
let context:NSManagedObjectContext = (AppDel?.managedObjectContext)!
let ent = NSEntityDescription.entityForName("Products", inManagedObjectContext: context)
var newProduct = ProductItem(entity: ent!, insertIntoManagedObjectContext: context)
newProduct.title = productLabel.text
//newProduct.price = priceLabel.text
/*context.save(nil)
print(newProduct)
print("Object Saved")*/
}
private(set) var PRODUCT_NAME = ""
private(set) var PRODUCT_PRICE = ""
private var menuItems:[ProductItem] = []
static func searchCode(codeNumber: String) -> String{
let barcodeNumber = codeNumber
return barcodeNumber
}
deinit{
NSNotificationCenter.defaultCenter().removeObserver(self)
}
override func viewDidLoad() {
super.viewDidLoad()
productLabel.text = "Scan a Product"
priceLabel.text = ""
NSNotificationCenter.defaultCenter().addObserver(self, selector: "setLabels:", name: "ProductNotification", object: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
I already added the items into Core Data successfully and was able to load all items into a table in my app. Now with the barcode scanned I want to be able to just load the products with the barcode and i'm stuck on that part. As you can see my static fun searchCode is receiving the barcode from barcodeDetected but what should I do next to fetch it? Thanks.
EDIT:
Core Data Entity
import Foundation
import CoreData
#objc(ProductItem)
class ProductItem: NSManagedObject{
#NSManaged var barcodeNum:String?
#NSManaged var box_height:NSNumber?
#NSManaged var box_length:NSNumber?
#NSManaged var box_width:NSNumber?
#NSManaged var price:NSNumber?
#NSManaged var sku:String?
#NSManaged var weight:NSNumber?
#NSManaged var title:String?
}
To fetch the correct ProductItem, you need to use a predicate (see the Apple Documentation here). In your case, you could use something like this:
let AppDel = UIApplication.sharedApplication().delegate as? AppDelegate
let context:NSManagedObjectContext = (AppDel?.managedObjectContext)!
let fetchRequest = NSFetchRequest(entityName: "ProductItem")
fetchRequest.predicate = NSPredicate(format: "barcodeNum == %#",codeNumber)
let results = try! context.executeFetchRequest(fetchRequest) as! [ProductItem]
if results.count > 0 { // great, you found (at least one) matching item
let scannedProduct = results[0]
// from here you can access the attributes of the product
// such as title, price, sku, etc.
...
} else { // not found
...
}
Note that I've use try! for brevity, but in practice you should use proper do ... catch syntax and handle any errors.
I'm not clear why you are using a static func in the ProductDetailsViewController; a common approach would be to use the above fetch within your barcodeDetected method, and then to segue to the ProductDetailsViewController passing the relevant ProductItem for display/editing or whatever. Or to display an alert view if the product was not found.
Im more familiar with ActionScript3 and see many similarities in Swift2, kind of why i am trying out basic coding in Swift2 and Xcode.
Here's my example:
#IBOutlet weak var b1CurrSpeed: NSTextField!
I want to store b1CurrSpeed as a string so i could access the actual textfield component to set its default value when application is loaded.
I'm aiming for Swift2 for osx apps.
Here is a fictional example, not related to any actual code:
var tf:NSTextField = this.getItem("b1CurrSpeed");
tf.stringValue = "Hello world";
Reason to this approach is following...
I would like to store textfield value in NSUserDefaults, the key for defaults would be name of that textfield. So when looping thru the defaults, i would like to get key as string and when ive got that i'd have access to actual component to set its stringvalue property.
Tho, is that good approach in Swift / xCode ?
If you want to create a function for it, do someting like this:
func getStringForKey(key: String) -> String {
guard let result = NSUserDefaults.standardUserDefaults().objectForKey(key) as! String else { return "" }
return result
}
You can set the TextFields value with myTextField.text
Swift's Mirror type can get you close to it but it is limited to NSObject subclasses, can only access stored properties and is read-only.
Yet, there are ways around these limitations if your requirements will allow.
For example, here's an extension that will save and restore defaults values for all UITextfields on a view controller using the name you gave to each IBOutlet.
extension UIViewController
{
func loadDefaults(userDefaults: NSUserDefaults)
{
for prop in Mirror(reflecting:self).children
{
// add variants for each type/property you want to support
if let field = prop.value as? UITextField,
let name = prop.label
{
if let defaultValue = userDefaults.objectForKey(name) as? String
{ field.text = defaultValue }
}
}
}
func saveDefaults(userDefaults: NSUserDefaults)
{
for prop in Mirror(reflecting:self).children
{
if let field = prop.value as? UITextField,
let name = prop.label
{
if let currentValue = field.text
{ userDefaults.setObject(currentValue, forKey: name) }
}
}
}
}
I am using this code for my background in the gameviewcontroller:
let yourImage = UIImage(named: welkeLevel)
let imageview = UIImageView(image: yourImage)
self.view?.addSubview(imageview)
But I have a begin (menu) scene where I do not want this background and is still showing up.
How do I detect which scene I am (Gamescene / Menuscene etc.)?
Or is there another way?
SKScene is a subclass of SKNode. You can use the name property to do this. Just set the name of Gamescene or Menuscene to 'game' or 'menu' like this:
scene.name = "game"
And check the property like so:
if self.name == "game"{
//Do something.
println("game")
} else if self.name == "menu
//Do something else.
println("menu")
}
I have worked out the same issue with a replay button. I have to identify which scene the user is in and reload the same when user clicks replay button.
1) Add a extension function to detect current game level
extension SKScene {
static func sceneWithClassNamed(className: String, fileNamed fileName: String) -> SKScene? {
if let SceneClass = NSClassFromString("JumperCrab.\(className)") as? SKScene.Type,
let scene = SceneClass(fileNamed: fileName) {
return scene
}
return nil
}
func replayCurrentScene(currentLevelName: String,currentGameSceneIndex:Int)
{
GameViewController().getReplayCurrentSceneDetailsToVC(currentLevelName, currentGameSceneIndex: currentGameSceneIndex)
}
}
2) Call the above extension method in every game scene.
override func didMoveToView(view: SKView) {
self.replayCurrentScene( "Round 1", currentGameSceneIndex: 0)
}
3) Set up a similar method at the View Controller.
func getReplayCurrentSceneDetailsToVC(currentLevelName: String,currentGameSceneIndex:Int)
{
NSUserDefaults.standardUserDefaults().setInteger(currentGameSceneIndex, forKey: "LevelInt")
NSUserDefaults.standardUserDefaults().synchronize()
NSUserDefaults.standardUserDefaults().setObject(currentLevelName, forKey: "LevelName")
NSUserDefaults.standardUserDefaults().synchronize()
}
4) Create variables
//GAME LEVEL
var gameLevelSceneNameArray = NSArray()
var currentGameSceneAtVC:String?
var currentGameSceneIndexAtVC:Int?
5) Make my level list array
override func viewDidLoad() {
super.viewDidLoad()
//Game Scenes
gameLevelSceneNameArray = ["GameScene","SecondRound","ThirdRound", "FourthRound","FifthRound","SixthRound","SeventhRound", "EighthRound","NinethRound"]
}
6) Apply on the Replay Game button .
#IBAction func replayButtonClicked(sender: AnyObject) {
currentGameSceneIndexAtVC = NSUserDefaults.standardUserDefaults().integerForKey("LevelInt")
currentGameSceneAtVC = NSUserDefaults.standardUserDefaults().objectForKey("LevelName") as? String
self.moveToSelectedGameLevel(currentGameSceneAtVC!, gameSceneName: self.gameLevelSceneNameArray[currentGameSceneIndexAtVC!] as! String)
}
7) Set up a game scene navigation too (using switch case )
func moveToSelectedGameLevel(levelNameString:String, gameSceneName:String)
{
let skView = self.view as! SKView
switch(levelNameString)
{
case "Round 1":
if let gameScene = SKScene.sceneWithClassNamed(gameSceneName, fileNamed: gameSceneName) {
skView.presentScene(gameScene)
}
case "Round 2" :
if let gameScene = SKScene.sceneWithClassNamed(gameSceneName, fileNamed: gameSceneName) {
skView.presentScene(gameScene)
}
case "Round 3":
if let gameScene = SKScene.sceneWithClassNamed(gameSceneName, fileNamed: gameSceneName) {
skView.presentScene(gameScene)
default:
print("")
}
}