I am trying set the background image of UIBarButtonItem programatically. But my image is stretched and tiled. Any help on fixing this would be much appreciated. Here is my code
var objectSelected : UIImage!{
didSet{
if objectSelected == nil {
objectSelected = UIImage(named: "line")
}
let insets = UIEdgeInsetsMake(0, 0, 10, 0)
objectSelected.resizableImageWithCapInsets(insets)
objectSelector.setBackgroundImage(objectSelected, forState: UIControlState.Normal, style: UIBarButtonItemStyle.Plain, barMetrics: UIBarMetrics.Default)
}
}
#IBOutlet weak var objectSelector: UIBarButtonItem!
You could try this.
var myBtn: UIButton = UIButton()
myBtn.setImage(UIImage(named: "line"), forState: .Normal)
myBtn.frame = CGRectMake(0, 0, 70, 70)
myBtn.addTarget(self, action: "myBtnAction:", forControlEvents: .TouchUpInside)
self.navigationItem.setLeftBarButtonItem(UIBarButtonItem(customView: myBtn), animated: true)
Related
I have a UIToolbar installed on my Viewcontroller on the bottom via Storyboard. I also added a bottom in the Storyboard and now I want to give this bottom a greater height than the toolbar itself.
It should be something like that, but it cannot be a Tabbar but needs to be a Toolbar, as the items on it are purely contextual actions and not top level navigation items (see Apple guidelines here and here):
I tried the following code in my Viewcontroller without success (as mentioned here):
class MyVC: UIViewController {
#IBOutlet var ibOutletForButton: UIBarButtonItem!
override func viewDidLoad() {
super.viewDidLoad()
let menuBtn = UIButton(type: .custom)
menuBtn.frame = CGRect(x: 0.0, y: 0.0, width: 20, height: 120)
menuBtn.setImage(UIImage(named:"iconImage"), for: .normal)
menuBtn.addTarget(self, action: #selector(onMenuButtonPressed(_:)), for: UIControlEvents.touchUpInside)
let menuBarItem = UIBarButtonItem(customView: menuBtn)
let currWidth = menuBarItem.customView?.widthAnchor.constraint(equalToConstant: 24)
currWidth?.isActive = true
let currHeight = menuBarItem.customView?.heightAnchor.constraint(equalToConstant: 124)
currHeight?.isActive = true
ibOutletForButton = menuBarItem
}
}
How could I get the button bigger and moved up that it looks like on the image?
One way you could do this is to add the button directly to the UIViewController instead of to the UIToolbar. You have then complete freedom of positioning and sizing.
As you don't use a UITabBar, you will stay within your UIViewController and it should be no problem
You can create 4 BarbuttonItem after first 2, give some flexible space between items and add your 'plus' button to toolbar directly in that space.
#IBOutlet weak var myToolBar: UIToolbar!
let menuBtn = UIButton(type: .custom)
override func viewDidLoad() {
super.viewDidLoad()
let menuBtn = UIButton(type: .custom)
menuBtn.frame = CGRect(x: myToolBar.center.x-10, y: -60, width: 20, height: 120)
menuBtn.setImage(UIImage(named:"iconImage"), for: .normal)
menuBtn.addTarget(self, action: #selector(onMenuButtonPressed(_:)), for: UIControlEvents.touchUpInside)
let spacer = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
let items = myToolBar.items!
myToolBar.setItems([items[0],items[1],spacer,items[2],items[3]], animated: false)
myToolBar.addSubview(menuBtn)
}
I need to create Toolbar and add buttons programmatically. I will have different sets of buttons for diferent screens.
That's easy.
Also, I need to center those buttons. They should have equal space between them.
And also I need that all those buttons separate screen width only between themselfs. Like, I have 5 buttons, total screen width is 300, so each button will have width 60. I am not sure how to do that, i tried dirrenrt things but they wasn't centered or hadn't such width. Any ideas how to do that?
class OptionsView: UIView {
#IBOutlet weak var toolbar: UIToolbar!
var width: CGFloat {
return 0//UIScreen.main.bounds.width/5 //was trying to calculate width , but it did not work
}
override func awakeFromNib() {
super.awakeFromNib()
toolbar.isTranslucent = true
toolbar.setBackgroundImage(UIImage(), forToolbarPosition: UIBarPosition.any, barMetrics: UIBarMetrics.default)
toolbar.setShadowImage(UIImage(), forToolbarPosition: UIBarPosition.any)
toolbar.barTintColor = .white
backgroundColor = .clear
}
func addAirPlay(target: Any?, action: Selector) {
let normalImage = UIImage(named: "player-airplay")
let button = UIButton(type: .custom)
button.frame = CGRect(x: 0, y: 0, width: width, height: 100)
button.setImage(normalImage, for: UIControlState())
button.addTarget(target, action: action, for: .touchUpInside)
let item = UIBarButtonItem(customView: button)
//item.width = width //was trying to play with that
var items = toolbar.items
items?.append(item)
toolbar.items = items
toolbar.reload()
}
func addOrientation(target: Any?, action: Selector) {
let button = UIButton(type: .custom)
button.tag = orientationTag
button.frame = CGRect(x: 0, y: 0, width: width, height: 100)
button.addTarget(target, action: action, for: .touchUpInside)
let item = UIBarButtonItem(customView: button)
//item.width = width
var items = toolbar.items
items?.append(item)
toolbar.items = items
toolbar.reload()
reloadOrientation()
}
func addFlexibleSpace() {
let item = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
var items = toolbar.items
items?.append(item)
toolbar.items = items
toolbar.reload()
}
Creating:
optionsView = OptionsView.loadFromNib()
playerView.addSubview(optionsView)
optionsView.snp.makeConstraints { (make) in
make.leading.trailing.top.bottom.equalTo(self.optionsPlaceholderView)
}
// optionsView.addFlexibleSpace() //was trying that as well
optionsView.addAirPlay(target: self, action: #selector(airplayButtonAction(_:)))
optionsView.addFlexibleSpace()
optionsView.addOrientation(target: self, action: #selector(orientationButtonAction(_:)))
optionsView.addFlexibleSpace()
optionsView.addFave(target: self, action: #selector(faveButtonAction(_:)))
optionsView.addFlexibleSpace()
optionsView.addExtra(target: self, action: #selector(showExtraButtonAction(_:)))
optionsView.addFlexibleSpace()
optionsView.addScenes(target: self, action: #selector(sceneButtonAction(_:)))
// optionsView.addFlexibleSpace()
I tried to change the font color of the right bar button item to purple, but it still shows up as white. I've consulted this question and this question. How do I fix this?
Code
let sortButton = UIButton(frame: CGRect(x: 0, y: 0, width: 34, height: 15))
sortButton.setTitle("SORT", for: .normal)
sortButton.titleLabel?.tintColor = UIColor.myMusicPurple
sortButton.tintColor = UIColor.myMusicPurple
navigationItem.rightBarButtonItem = UIBarButtonItem(customView: sortButton)
navigationItem.rightBarButtonItem?.tintColor = UIColor.myMusicPurple
This should do the trick (if you have plain text)
let rightBarButtonItem = UIBarButtonItem(title: "Some text", style: .plain, target: self, action: #selector(someAction))
rightBarButtonItem.tintColor = UIColor.myMusicPurple
navigationItem.rightBarButtonItem = rightBarButtonItem
Please try this
sortButton.setTitleTextAttributes([NSAttributedStringKey.foregroundColor : UIColor.white], for: .normal)
Its simple, just create a reference for UIBarButtonItem from Main.stroyboard to corresponding swift file like this,
#IBOutlet var yourBarBtn: UIBarButtonItem!
After that write this line,
yourBarBtn.tintColor = .white //your_color
Thats it!
First, you need to set plain properties then after you can write as like.
#IBOutlet weak var btnGenerate: UIBarButtonItem!
btnGenerate.setTitleTextAttributes([NSAttributedString.Key.foregroundColor : UIColor.colorBlue], for: .normal)
What about using:
func setTitleColor(UIColor?, for: UIControlState)
Documentation says it sets the color of the title to use for the specified state.
sortButton.setTitleColor( .red, for: .normal)
I am trying to use Swift's internal back button image.
I have asked this question before and got the technically correct answer that it inherits it from the previous View, BUT if I insert this code you can control the back button on the current View.
// Takeover Back Button
self.navigationItem.hidesBackButton = false
let newBackButton = UIBarButtonItem(title: "<", style: .Plain, target: self, action: "segueBack")
navigationItem.leftBarButtonItem = newBackButton
That gives me a <, "ABC" would give me ABC etc but how do I trigger Swift to put up it's internal Back Button image. The code below doesn't work but I would have thought is along the right lines.
let backImg: UIImage = UIImage(named: "BACK_BUTTON_DEFAULT_ICON")!
navigationItem.leftBarButtonItem!.setBackgroundImage(backImg, forState: .Normal, barMetrics: .Default)
Has anyone worked out how to do this?
Try to add custom view as back button like as
var backButton = UIButton(frame: CGRectMake(0, 0, 70.0, 70.0))
var backImage = UIImage(named: "backBtn")
backButton.setImage(backImage, forState: UIControlState.Normal)
backButton.titleEdgeInsets = UIEdgeInsetsMake(10.0, 10.0, 10.0, 0.0)
backButton.setTitle("Back", forState: UIControlState.Normal)
backButton.addTarget(self, action: "buttonPressed", forControlEvents: UIControlEvents.TouchUpInside)
var backBarButton = UIBarButtonItem(customView: backButton)
var spacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
spacer.width = -15
self.navigationItem.leftBarButtonItems = [spacer,backBarButton]
It will look same as iOS back button
I struggled with this question for a while. Finally I got the back image with the following code:
let backImage = navigationController?.navigationBar.subviews[2].subviews[0].subviews[0].subviews[0] as! UIImageView).image
Before run the code above, make sure the back button is showing. Then you can save backImage to anywhere you want.
Here is the backImage I got.
Here is my solution:
override func viewDidLoad() {
...
let buttonBack = UIBarButtonItem(image: UIImage(named: "backButton"), style: .plain, target: self, action: #selector(buttonSavePressed(_:)))
self.navigationItem.leftBarButtonItem = buttonBack
let backButton = UIButton(frame: CGRect(x: 0, y: 0, width: 24.0, height: 24.0))
let backImage = UIImage(named: "backButton")
backButton.setImage(backImage, for: .normal)
backButton.setTitle("Back", for:.normal)
if #available(iOS 13.0, *) {
backButton.setTitleColor(.link, for: .normal)
} else {
backButton.setTitleColor(.blue, for: .normal)
}
backButton.addTarget(self, action:#selector(buttonSavePressed(_:)), for: .touchUpInside)
let backBarButton = UIBarButtonItem(customView: backButton)
let spacer = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
spacer.width = -15
self.navigationItem.leftBarButtonItems = [spacer,backBarButton]
}
#objc func buttonBackPressed(_ sender: Any) {
...
}
If you want to get the default back button image, the arrow is a class of type _UINavigationBarBackIndicatorView.
Here follows the hack,
UIImage *imgViewBack ;
for (UIView *view in self.navigationController.navigationBar.subviews) {
// The arrow is a class of type _UINavigationBarBackIndicatorView. This is not any of the private methods, so I think
// this is fine for the AppStore...
if ([NSStringFromClass([view class]) isEqualToString:#"_UINavigationBarBackIndicatorView"]) {
// Set the image from the Default BackBtn Imageview
UIImageView *imgView = (UIImageView *) view;
if(imgView){
imgViewBack = imgView.image ;
}
}
}
Try this to replace the back button image:
let back_image = UIImage(named: "btn_back")
self.navigationBar.backIndicatorImage = back_image
self.navigationBar.backIndicatorTransitionMaskImage = back_image
If you don't like to have the "Back" title you can add this too:
self.navigationBar.topItem?.title = ""
var button = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
var image = UIImage(named: "myimage.png") as UIImage!
button.frame = CGRectMake(0, 0, 100, 100)
button.setImage(image, forState: .Normal)
I have an image that I've set on my button, but I'd like to scale it to be smaller than the button (for example the image should be 50,50) and center in the button. How might I do this in Swift?
Xcode 8.3.1 • Swift 3.1
let button = UIButton(type: .custom)
let image = UIImage(named: "myimage.png")
func buttonTouchDown(_ button: UIButton) {
print("button Touch Down")
}
override func viewDidLoad() {
super.viewDidLoad()
button.frame = CGRect(x: 0, y: 0 , width: 100, height: 100)
button.backgroundColor = .clear
button.addTarget(self, action: #selector(buttonTouchDown), for: .touchDown)
button.setTitle("Title", for: .normal)
button.setTitleColor(.black, for: .normal)
button.setImage(image, for: .normal)
button.imageEdgeInsets = UIEdgeInsetsMake(25,25,25,25)
view.addSubview(button)
}
Swift 5, Swift 4, Swift 3
var image = UIImage(named: "myimage") as UIImage!
btnetc.setImage(image, for: .normal)
btnetc.imageView?.contentMode = .scaleAspectFill
or
btnetc.imageView?.contentMode = .scaleAspectFit
or
btnetc.imageView?.contentMode = .scaleToFill
Ther is a much easier way to do this where you don't have to deal with content insets. Here its is:
var button = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
var image = UIImage(named: "myimage.png") as UIImage!
button.frame = CGRectMake(0, 0, 100, 100)
button.setImage(image, forState: .Normal)
button.contentMode = .center
button.imageView?.contentMode = .scaleAspectFit
Or via XIB after selecting your UIButton.
Just make sure your insets are all the same.
Xcode 13, Swift 5
Using storyboard, select the button, then in the size inspect click the dropdown on size just above Content inset. There is a list of sizes to select from, and this will adjust your image size(if you use system image). The default size is already set when you added the button on the storyboard to the View Controller.