I have multiple buttons that all get their titles from an array. I would like to be able to assign the title with a loop, but I can't figure how to refer to each button as I go through the loop.
Currently I am adding each title with a line of code like this:
button0.setTitle(title[0], forState: .Normal)
button1.setTitle(title[1], forState: .Normal)
button2.setTitle(title[2], forState: .Normal)
button3.setTitle(title[3], forState: .Normal)
etc...
I have added an IBOutlet to each button, but I am also using tags for another purpose, so if there is a way to use tags to assign the titles, I would be happy to do that.
Any thoughts?
You need an IBOutletCollection
In your Swift ViewController, assign all your buttons to the below
#IBOutlet var buttons: [UIButton]!
Then to assign the titles
var buttonTitles = ["Button1","Button2"]
for (index,button) in buttons.enumerate()
{
if buttonTitles.count > index
{
if let title : String = buttonTitles[index]
{
button.setTitle(title, forState: .Normal)
}
}
}
Related
From the response i will get the array like :
data = ["1","2","3"]
Button1 // all uibutton iboutlet
Button2 // all uibutton iboutlet
Button3 // all uibutton iboutlet
Now how i will bind the data value to all the 3 button. So that in screen it have to display like ;
1
2
3
Note : All buttons are static, and only 3 data will get from response.
Thanks in advance !!
zip([Button1, Button2, Button3], data).forEach { (button, title) in
button.setTitle(title, for: .normal)
}
zip joins two arrays together in parallel, so the zip of data and [Button1, Button2, Button3] will be an array of tuples, like so:
[(Button1, "1"), (Button2, "2"), (Button3, "3")]
Then simply iterate the array of tuples, setting each button's title attribute to its corresponding title value.
If data were to have more than 3 elements, the forEach would still only iterate 3 times.
Hope I have correctly understood, what do you want to do.
Try to make it like this:
Button1.setTitle(data[0], for: .normal)
Button2.setTitle(data[1], for: .normal)
Button3.setTitle(data[2], for: .normal)
Hope it helps
As vlad said:
Button1.setTitle(data[0], for: .normal)
Button2.setTitle(data[1], for: .normal)
Button3.setTitle(data[2], for: .normal) //Notice !setTitle!
I also recommend to have a look at https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/CollectionTypes.html
Make array of your Button and title
let button = [button1,button2,button3]
let title = ["1","2","3"]
for (button,title) in zip(button,title){
button.setTitle(title, for: .normal)
}
I have a scrollview inside a view. Inside the scrollview I create programmatically 5 buttons. Every button loads a different image with a different tag each one. I added a function that is called when pressing the buttons.
let avatarsListScrollingView = avatarsListView(CGSizeMake(70.0, 55.0), avatarCount: 5)
func avatarsListView(buttonSize:CGSize, avatarCount:Int) -> UIView {
**CODE**
for i in 0...(avatarCount-1) {
let button = UIButton(type: .Custom)
**CODE**
button.setImage(UIImage(named: avatarsList[i]), forState: .Normal)
button.tag = i
button.addTarget(self, action: "avatarListSelected:", forControlEvents: .TouchUpInside)
avatarButtonView.addSubview(button)
}
return avatarButtonView
}
Then when pressing the buttons, I call to "avatarListSelected":
func avatarListSelected(sender:UIButton){
if let image = sender.imageView?.image?.imageWithRenderingMode(.AlwaysTemplate) {
sender.setImage(image, forState: .Normal)
sender.tintColor = UIColor.redColor()
}
self.addAvatarView.reloadInputViews()
}
This function tints the image button to red, it is working fine, but the problem is that when I press some other button, I want the other one goes to the original color. Right now every button that I press gets in red.
I tried to add the call to "self.addAvatarView.reloadInputViews()" to try to "redraw" again all the buttons, but never gets called.
Do you guys know some way to do this?
Thanks to everybody!
This is the final code that solved the problem:
func avatarListSelected(sender:UIButton){
print(sender.tag)
if let image = sender.imageView?.image?.imageWithRenderingMode(.AlwaysTemplate) {
sender.setImage(image, forState: .Normal)
sender.tintColor = UIColor.redColor()
}
for view in self.avatarButtonView.subviews as [UIView] {
if let btn = view as? UIButton {
if btn.tag != sender.tag {
btn.setImage(UIImage(named: avatarsList[btn.tag]), forState: .Normal)
}
}
}
}
Create a property selectedButton: UIButton? and keep a reference to the selected button there. Don't forget to update it in avatarListSelected method and before you change it, if it isn't nil, change its color to original (and then change it).
If the buttons have different original colors, subclass UIButton class and keep the original color there.
I don't know if is better approach or answer, but, i maybe could delivery this using this approach:
Create a method that will "fill" the color for your choice button and "clear" color to others , but its a method that loop through UIScrollView and look for each UIButton. Something like this :
func setBackgroundColorButton(color:UIColor , buttonTag:Int){
for view in self.scrollView.subviews as [UIView] {
if let btn = view as? UIButton {
if btn == buttonTag {
btn.tintColor = color
} else {
btn.tintColor = UIColor.whiteColor()
}
}
}
}
This is the concept, i didn't tested, but maybe just need adjust to search inside your scroll view or similar.
But with this will be work nice i believe :D
You could do it like this
for i in 0...5 {
let button = UIButton(type: .Custom)
let x = 50 * i + 10
let y = 50
button.frame = CGRectMake(CGFloat(x), CGFloat(y), 40, 40)
button.setTitle("\(i)", forState: .Normal)
button.tag = i
button.backgroundColor = UIColor.greenColor()
button.tintColor = UIColor.blueColor()
button.addTarget(self, action: "avatarListSelected:", forControlEvents: .TouchUpInside)
self.view.addSubview(button)
}
func avatarListSelected(sender : UIButton){
sender.backgroundColor = UIColor.orangeColor()
for view in self.view.subviews{
if(view.isKindOfClass(UIButton)){
let button = view as! UIButton
if button.tag != sender.tag{
button.backgroundColor = UIColor.greenColor()
}
}
}
}
The frame etc is just for demonstation purpose only, you should of course use your own value. The tintColor property is not valid for all button types. Read the documentation for more information.
When I first run my app, I retrieve a number from my server and display it for my UIButton label. Think of this as a notification number displayed on a red UIButton.
When I remove a notification within the app, I want my UIButton label decrement by 1. I am able to get the decremented number from the server after I delete a notification, but I can't display this new number on the UIButton. The button always displays the number when the app is first fired.
I call makeButtonView() method after I remove a notification to update the UIButton
func makeButtonView(){
var button = makeButton()
view.addSubView(button)
button.tag = 2
if (view.viewWithTag(2) != nil) {
view.viewWithTag(2)?.removeFromSuperview()
var updatedButton = makeButton()
view.addSubview(updatedButton)
}else{
println("No button found with tag 2")
}
}
func makeButton() -> UIButton{
let button = UIButton(frame: CGRectMake(50, 5, 60, 40))
button.setBackgroundImage(UIImage(named: "redBubbleButton"), forState: .Normal)
API.getNotificationCount(userID) {
data, error in
button.setTitle("\(data)", forState: UIControlState.Normal)
}
button.addTarget(self, action: "targetController:", forControlEvents: UIControlEvents.TouchUpInside)
return button
}
Use this code for Swift 4 or 5
button.setTitle("Click Me", for: .normal)
I need more information to give you a proper code. But this approach should work:
lazy var button : UIButton = {
let button = UIButton(frame: CGRectMake(50, 5, 60, 40))
button.setBackgroundImage(UIImage(named: "redBubbleButton"), forState: .Normal)
button.addTarget(self, action: "targetController:", forControlEvents: UIControlEvents.TouchUpInside)
return button
}()
func makeButtonView(){
// This should be called just once!!
// Likely you should call this method from viewDidLoad()
self.view.addSubview(button)
}
func updateButton(){
API.getNotificationCount(userID) {
data, error in
// be sure this is call in the main thread!!
button.setTitle("\(data)", forState: UIControlState.Normal)
}
}
There have been some updates since Swift 4. This works for me:
self.button.setTitle("Button Title", for: UIControl.State.init(rawValue: 0))
Replace button with your IBOutlet name. You can also use a variable or array in place of the quoted text.
It's fairly simple ...
import UIKit
class ViewController: UIViewController {
#IBOutlet var button: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
button.setTitle("hello world", forState: UIControlState.Normal)
}
}
I believe if you set the state to normal, the value will propagate by default to other states so long as you haven't explicitly set a title for those states.
Said differently, if you set it for normal, it should also display this title when the button enters additional states
UIControlState.allZeros
UIControlState.Application
UIControlState.Disabled
UIControlState.Highlighted
UIControlState.Reserved
UIControlState.Selected
Lastly, here's Apple's documentation in case you have other questions.
Since your API call should be running on a background thread you need to dispatch your UI update back to the main thread like this:
DispatchQueue.main.async {
button.setTitle(“new value”, forState: .normal)
}
After setting the title, just a simple redraw of the button will do:
button.setNeedsDisplay();
Here's what I'm trying to do. If you've ever played Halo or CoD, you'd know that you could change the name of a weapon load-out.
What I'm doing is making it so you can change your load-out name using a text field. Here's the problem, the load-out name in the load-out menu is a button (to select and view info about that load-out) and I could just write this:
#IBAction func renameClassButton(sender: AnyObject) {
classTopButton.text = "\(classTopTextField)"
}
Except it [classTopButton] is a button which doesn't allow the '.text' suffix
You can do:
button.setTitle("my text here", forState: .normal)
Swift 3, 4, and 5:
button.setTitle("my text here", for: .normal)
In Xcode 8 - Swift 3:
button.setTitle( "entertext" , for: .normal )
It is now this For swift 3,
let button = (sender as AnyObject)
button.setTitle("Your text", for: .normal)
(The constant declaration of the variable is not necessary just make sure you use the sender from the button like this) :
(sender as AnyObject).setTitle("Your text", for: .normal)
Remember this is used inside the IBAction of your button.
NOTE:
line
someButton.setTitle("New Title", forState: .normal)
works only when Title type is Plain.
swift 4 work as well as 3
libero.setTitle("---", for: .normal)
where libero is a uibutton
You can Use sender argument
#IBAction func TickToeButtonClick(sender: AnyObject) {
sender.setTitle("my text here", forState: .normal)
}
In Swift 4 I tried all of this previously, but runs only:
#IBAction func myButton(sender: AnyObject) {
sender.setTitle("This is example text one", for:[])
sender.setTitle("This is example text two", for: .normal)
}
Note that if you're using NSButton there is no setTitle func, instead, it's a property.
#IBOutlet weak var classToButton: NSButton!
. . .
classToButton.title = "Some Text"
Simple question here. I have a UIButton, currencySelector, and I want to programmatically change the text. Here's what I have:
currencySelector.text = "foobar"
Xcode gives me the error "Expected Declaration". What am I doing wrong, and how can I make the button's text change?
In Swift 3, 4, 5:
button.setTitle("Button Title", for: .normal)
Otherwise:
button.setTitle("Button Title", forState: UIControlState.Normal)
Also an #IBOutlet has to declared for the button.
Just a clarification for those new to Swift and iOS programming. Below line of code:
button.setTitle("myTitle", forState: UIControlState.Normal)
only applies to IBOutlets, not IBActions.
So, if your app is using a button as a function to execute some code, say playing music, and you want to change the title from Play to Pause based on a toggle variable, you need to also create an IBOutlet for that button.
If you try to use button.setTitle against an IBAction you will get an error. Its obvious once you know it, but for the noobs (we all were) this is a helpful tip.
Swift 5.0
// Standard State
myButton.setTitle("Title", for: .normal)
Swift 5:
let controlStates: Array<UIControl.State> = [.normal, .highlighted, .disabled, .selected, .focused, .application, .reserved]
for controlState in controlStates {
button.setTitle(NSLocalizedString("Title", comment: ""), for: controlState)
}
Swift 3:
Set button title:
//for normal state:
my_btn.setTitle("Button Title", for: .normal)
// For highlighted state:
my_btn.setTitle("Button Title2", for: .highlighted)
Changing title when attributed is a bit different :
I just ran into a problem : If you have an UIButton with an Attributed Title, you have to use :
my_btn.setAttributedTitle(NSAttributedString(string: my_title), for: my_state)
as, per Apple SetTitle Doc :
If you set both a title and an attributed title for the button, the button prefers the use of the attributed title over this one.
I had an attributed title and I tried to setTitle on it, with no effect...
Swift 3
When you make the #IBAction:
#IBAction func btnAction(_ sender: UIButton) {
sender.setTitle("string goes here", for: .normal)
}
This sets the sender as UIButton (instead of Any) so it targets the btnAction as a UIButton
As of 12/12/2021 - Swift version 5.5.1^ assuming you already have an IBOutlet linked to yourButton in a normal state.
yourButton.setTitle("Title of your button", for: .normal)
swift 4.2 and above
using button's IBOutlet
btnOutlet.setTitle("New Title", for: .normal)
using button's IBAction
#IBAction func btnAction(_ sender: UIButton) {
sender.setTitle("New Title", for: .normal)
}
Swift 3
let button: UIButton = UIButton()
button.frame = CGRect.init(x: view.frame.width/2, y: view.frame.height/2, width: 100, height: 100)
button.setTitle(“Title Button”, for: .normal)
To set a title for a button in Xcode using swift - 04:
first create a method called setTitle with parameter title and UIController state like below ;
func setTitle(_ title : String?, for state : UIControl.State) {
}
and recall this method in your button action method
like ;
yourButtonName.setTitle("String", for: .state)