I am relatively new to swift and have been used to a JavaScript environment so correct me if it is not possible, but is there a way to dynamically add rows of text inputs and thus data in the form of a nested dictionary, from the view via a button?
I am looking to create an object with no set constraints on the limitations of data.
Essentially the object would be structured as:
"Object1": ["row1":[desc: "desc1", option: "option1"]]
and when a user adds a row through a UIButton:
"Object1": ["row1":[desc: "desc1", option: "option1"], "row2": [desc: "desc2", option: "option2"]]
and so on....
Image example of what I am looking to achieve
Thank you for any input provided.
With the feedback of Will M I did overthink this again and came up with another solution:
class ViewController: UIViewController {
let xPos : CGFloat = 0
var yPos : CGFloat = 0
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func press(sender: AnyObject) {
yPos += 22
let tf = UITextField()
tf.frame = CGRectMake(xPos, yPos, 100, 20)
tf.backgroundColor = UIColor.blackColor()
self.view.addSubview(tf)
}
}
Here is a screenshot of what the result looks like I hope this helps you!
http://imgur.com/m59xDfN
The black things are textfields
Related
I am building Application in iOS swift 3.0. I am creating dynamic UIViews. I need to remove custom view randomly, But currently I am unable to relocate the positions as I get the gaps between the two views and I want remove them, as shows in the picture with code below, Kindly help me with this.
class ViewController: UIViewController {
var myView: subView!
var y : CGFloat!
var tag : Int = 0
#IBOutlet weak var addButton: UIButton!
override func viewDidLoad() {
y = 1
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func cancelbutton(_ sender: UIButton)
{
let selectViewTagValue : Int = sender.tag /// save the selected view tag value
for object in self.view.subviews {
if ((object is subView) && object.tag == selectViewTagValue)
{
object.removeFromSuperview()
}
}
}
#IBAction func buttonAction(_ sender: Any) {
y = y + 110
myView = subView(frame: CGRect(x: 80, y: y, width: 300, height: 100))
myView.tag = tag
myView.actionButton.tag = tag
tag = tag + 1
myView.backgroundColor = UIColor.green
myView.actionButton.addTarget(self, action: (#selector(cancelbutton(_:))), for: UIControlEvents.touchUpInside)
self.view.addSubview(myView)
}
Please Help me this issue... "Thanks in advance"
When you have multiple similar views to be displayed and re-arranged dynamically, UITableView is a smart choice. Re-arranging frames would be tedious to maintain and requires lot of code to implement. Why not use tools provided by UITableView? Just use deleteRowsAtIndexPaths to delete your view and the rest will be taken care for you.
thanks for all help:)! fixed it using iboutlet collection and add properies on viewDidLoad
I'm trying to add properties to keyboard keys like layer.shadowColor or layer.shadowRadius.
I got an error
'Value of type '(UIButton)' -> () has no member 'layer'
how to fix this ?
this is my code keyboardViewController.swift
import UIKit
class KeyboardViewController: UIInputViewController {
var newKeyboardView: UIView!
#IBAction func keyPressed(sender: UIButton) {
}
#IBOutlet var nextKeyboardButton: UIButton!
override func updateViewConstraints() {
super.updateViewConstraints()
// Add custom view sizing constraints here
}
override func viewDidLoad() {
super.viewDidLoad()
loadInterface()
}
func loadInterface() {
// load the nib file
let keyboardNib = UINib(nibName: "newKeyboard", bundle: nil)
// instantiate the view
newKeyboardView = keyboardNib.instantiateWithOwner(self, options: nil)[0] as! UIView
// add the interface to the main view
view.addSubview(newKeyboardView)
// copy the background color
view.backgroundColor = newKeyboardView.backgroundColor
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated
}
override func textWillChange(textInput: UITextInput?) {
// The app is about to change the document's contents. Perform any preparation here.
}
override func textDidChange(textInput: UITextInput?) {
// The app has just changed the document's contents, the document context has been updated.
var textColor: UIColor
let proxy = self.textDocumentProxy
if proxy.keyboardAppearance == UIKeyboardAppearance.Dark {
textColor = UIColor.whiteColor()
} else {
textColor = UIColor.blackColor()
}
self.nextKeyboardButton.setTitleColor(textColor, forState: .Normal)
}
}
I think that in order to apply some style to the button, you need an outlet to this button.
Right now, from what I can understand, you are trying to apply styles to the button from the #IBAction to the sender, which is not the proper way to do it.
Try to make an outlet to the button in the view controller and then to apply the styles from within the viewDidLoad method.
I hope this is clear, but if you want a more specific answer you need to show us what you tried, for example pasting the code you have in the view controller
EDIT:
Based on the code you post, the keyboard is a Nib you instantiate from loadInterface(). I don't have a clear vision of the whole thing with only this piece of code, but it seems to me that you are trying to apply some styles to every key button of a keyboard view. Unfortunately this really depends on how the keyboard is implemented, can you provide some more details?
Anyway, from what I see I think you didn't write this code: probably you are following a tutorial or maintaining someone else's code. That's ok, but I suggest you to follow a an introduction course to iOS development with Swift, like the Udacity's one, which is fantastic IMHO (https://www.udacity.com/course/intro-to-ios-app-development-with-swift--ud585)
If you try to format your UIButton with QuartzCore framework, you'll need to import it first:
import QuartzCore
Then you will be able to access those members.
For example (latest swift3 code):
#IBAction func keyPressed(sender: UIButton) {
let button = sender as UIButton!
button?.backgroundColor = UIColor.red
button?.layer.shadowColor = UIColor.black.cgColor
button?.layer.shadowRadius = 1.0
button?.layer.cornerRadius = 4.0
}
In case you need to apply your styles sooner, try to consider to put this code into viewDidLoad or viewDidAppear methods:
self.nextKeyboardButton.backgroundColor = UIColor.red
self.nextKeyboardButton.layer.shadowColor = UIColor.black.cgColor
self.nextKeyboardButton.layer.shadowRadius = 1.0
self.nextKeyboardButton.layer.cornerRadius = 4.0
Seems like you're trying to "add property" not to a button, but rather to a closure which accepts a button as an argument.
Make it like this:
nextKeyboardButton.layer.shadowColor = UIColor.redColor.cgColor
nextKeyboardButton.layer.shadowRadius = 5.0
I'm making app and I'm trying to make a View which contains a Label with a question. I want this view in my app and because I will use it repeatedly, I made a class (If I want to make some change, I can do It from one place). The UIView is called questionView (var questionView = UIView()). Problem is when I want to make questionView a subview of view. The error says that I don't have have "view" which I understand. I don't have view but how can I get it? Thank you
This is what is inside my Question class:
import Foundation
import UIKit
class Question {
// PROPERTIES:
var questionLabel = UILabel()
var questionView = UIView()
// METHODS:
func createQuestion (input:String) {
// some code .... not important
// THIS:
self.view.addSubview(questionView)
}
// ... next code, also not important
}
UPDATE:
There is my solution. It works BUT I think that it's not correct from a programming standpoint. Can anybody tell me anything about it? Thank you
My class in separate swift file:
My class in separate swift file:
class LabelClass {
var view = UIView()
init (view: UIView) {
self.view = view
}
var lbl = UILabel()
var lblView = UIView()
func makeLabel () {
self.lbl.frame = CGRectMake(0, 0, 150, 50)
self.lbl.text = "Text text text"
self.lbl.numberOfLines = 0
self.lblView.frame = CGRectMake(20, 20, 150, 50)
self.lblView.addSubview(self.lbl)
self.view.addSubview(lblView)
}
}
Piece of code my ViewController.swift:
override func viewDidLoad() {
super.viewDidLoad()
// Added code:
var object = LabelClass(view: self.view)
object.makeLabel()
}
I don't know Swift, but as far as I know, only instances of UIViewController have a view property, the class Question does not, so you cannot add subviews to it.
What you probably want is making a subclass of UIView which contains a question label, or to add the questionLabel as a subview of questionView.
It is because you are trying to add your view to a normal Swift class which doesn't have a self.view instance. Your Question class must be a subclass of UIViewController cocoa class that it has a self.view instance and override methods.
class Question:UIViewController {
// PROPHERITIES:
var questionLabel = UILabel()
var questionView = UIView()
// METHODS:
override func viewDidLoad() {
createQuestion("foo")
}
func createQuestion (input:String) {
// some code .... not important
// THIS:
self.view.addSubview(questionView)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// ... next code, also not important
}
I am currently trying some iOS programming. I decided to go with Swift.
Everything is going fine, untill I try to use a UIWebView it won't change it's size to the screen size. I started app development on Android, but afaik there is nothing like relative sizes in iOS right?
Currently this is what my code looks like:
import UIKit
class FirstViewController: UIViewController {
#IBOutlet weak var mainWebView: UIWebView!
var urlPath = "http://www.google.com"
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
loadWebView()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func loadWebView()
{
var newRect = mainWebView.bounds
newRect.size.height = self.view.frame.size.height
newRect.size.width = self.view.frame.size.width
mainWebView.frame.size = newRect.size
let requestURL = NSURL(string:urlPath)
let request = NSURLRequest(URL: requestURL!)
mainWebView.loadRequest(request)
}
}
I tried different approaches with the above (giving de frame size to the mainWebView, but none work. Maybe it has something to do with the moment I give the commands to change size? Should I change the size earlier in the loading proces?
I also tried this:
mainWebView.sizeThatFits(self.view.frame.size)
But that didn't do anything either.
I would definitely appreciate all help!
Thanks in advance
Friso
PS.
In the example I am using the values from self.frame.size, but also when using for instance 100 x 100, it just won't change the size...
You need to set the whole frame at once. Setting the size of a UIView's frame directly does not work.
var newRect = mainWebView.frame
newRect.size.width = self.view.frame.size.width
newRect.size.height = self.view.frame.size.height
mainWebView.frame = newRect
I'm adding a few UISteppers and UITextFields programmatically, based on user's preferences. However, I can't seem to get the UIStepper touch to click - it looks like it's not registering the touch on the -/+ buttons. I tried setting User Interaction of the userTriggers UIView to disabled, but that didn't work.
1) What else can I try?
2) I also need to be able to increment the corresponding UITextField, and then write that into my UserData.plist file, and I'm not sure how to access each field. Should I add them to an array of some sort?
import UIKit
class TriggersViewController: UIViewController{
#IBOutlet var userTriggers:UIView!
#IBOutlet var saveButton:UIButton!
var triggersList:Array<String>!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
loadTriggers()
var prevInput = 250;
for index in 0..<triggersList.count{
//label for trigger
var label = UILabel(frame: CGRectMake(0, 0, 200, 21))
label.center = CGPointMake(120, CGFloat(prevInput))
label.textAlignment = NSTextAlignment.Left
label.text = triggersList[index]
userTriggers.addSubview(label)
//input box for trigger
var input = UITextField(frame: CGRectMake(0, 0, 50, 21))
input.center = CGPointMake(250, CGFloat(prevInput))
input.text = "0";
//add input to triggersView
userTriggers.addSubview(input);
//UIStepper
var stepper = UIStepper(frame: CGRectMake(0, 0, 50, 21))
stepper.center = CGPointMake(300, CGFloat(prevInput))
stepper.addTarget(self, action: "stepperValueChanged:", forControlEvents: .ValueChanged)
stepper.enabled = true
//add stepper to triggersView
userTriggers.addSubview(stepper);
prevInput += 50 //increment for height
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func stepperValueChanged(sender:UIStepper!){
println("It Works, Value is -->\(Int(sender.value).description)")
}
func loadTriggers(){
var myDict: NSDictionary?
if let path = NSBundle.mainBundle().pathForResource("UserConfigs", ofType: "plist") {
myDict = NSDictionary(contentsOfFile: path)
}
if let dict = myDict {
triggersList = dict["Triggers"] as Array<String>
}
}
}
You actually need to set user interaction on the superview to enabled. See here for more info: UIView -- "user interaction enabled" false on parent but true on child?
Also, re: second question an easy (but not so ideal) way to access each field is using tags. Clean-ish way to do that is define tags using an enum. Then access the fields using viewWithTag.
However, there are better ways than tags (e.g. they're not very error-proof because any view can be given any tag). If it's only a few text fields / steppers though you could just as easily add properties to your view controller for each one. The best solution would be to group the steppers and fields together in a UIView subclass (assuming they're next to each other) and store references to those groupings in your view controller (possibly in an array).