I'm trying to get my side menu (swreveal) to show when clicking a UIImageView with a tap gesture or button. I've got the image view and tap all set up and the tap gesture linked to an action. Getting this functionality is easy when using a bar button item but I can't seem to get it to function when using a plain old button or image view.
Here's how I do it for a bar button item:
barButtonItem!.target = self.revealViewController()
barButtonItem!.action = Selector("revealToggle:")
This obviously doesn't work for buttons or ImageViews because they don't have a member of target or action. Would really appreciate some assistance on this one!
To add target to UIButton you can use this:
...
let button = UIButton()
button.addTarget(self, action: "someAction:", forControlEvents: .TouchUpInside)
...
func someAction(sender: UIButton!) {
...
}
For adding action to press on UIImageView you can use UITapGestureRecognizer like this:
...
let tap = UITapGestureRecognizer(target: self, action: Selector("someAction"))
tap.numberOfTapsRequired = 1
image.userInteractionEnabled = true
image.addGestureRecognizer(tap)
...
func someAction() {
...
}
Related
I have created a .xib view cell view and it contains a button, label, and some text inside, how do I make the button clickable and get the details of the view ie, the label, and text?
A way to do this is by adding a tag and target to the button.
cell.moreBtn.tag = indexPath.row
cell.moreBtn.addTarget(self, action: #selector(showClickedBtn(sender:)),
for: .touchUpInside)
After that, create a function that will receive the action.
#objc func showClickedBtn(sender: UIButton) {
print("Button \(sender.tag) Clicked")
}
Hello, I have provided the link above to show a visual view of what I am trying to accomplish. So each button is a segue to the next view except the last button is not which is intended. The last two views with the back buttons at the top that are automatically included because of the nav controller I want to have those back buttons go to the first view controller. How can I do this either with xcode and swift?
If you want to remove all the navigation controller then use this code
Put this code in the button selector method
self.navigationController!.viewControllers.removeAll()
OR
navigationController?.popToRootViewController(animated: true)
OR
If you don’t have a Navigation Controller and use dismissViewController method, you still can use:
view.window?.rootViewController?.dismiss(animated: true, completion: nil)
Now comes the back button code:
override func viewDidLoad() {
super.viewDidLoad()
var backbutton = UIButton(type: .Custom)
backbutton.setImage(UIImage(named: "BackButton.png"), forState: .Normal) // Any image can be used. download back button image from any site or whatever you wanna use.
backbutton.setTitle("Back", forState: .Normal)
backbutton.setTitleColor(backbutton.tintColor, forState: .Normal) // You can change the TitleColor
backbutton.addTarget(self, action: "backAction", forControlEvents: .TouchUpInside)
self.navigationItem.leftBarButtonItem = UIBarButtonItem(customView: backbutton)
}
func backAction() -> Void {
//here put code from above whichever you wanna use for example I'm using one
self.navigationController?.popToRootViewController(animated: true)
}
I have developed an app showing a map view with a compass button. The natural function when pressing this compass button is that the map is being oriented to north.
Now I want to call a function when pressing this compass button.
A view of the app with a map can be found there (compass button is visible in the upper right corner)
http://aceingolf.com/wp-content/uploads/2018/12/0.jpg
The code below is working fine. It is just shown to give a complete view.
#IBOutlet weak var mapView: MKMapView!
let compassButton = MKCompassButton(mapView: mapView)
compassButton.compassVisibility = .visible
mapView.addSubview(compassButton)
I am looking for a way to create an action when the user presses the compass button on the map view.
I believe MKCompassButton inherits from UIView, So you can just add a UITapGestureRecognizer to the compassButton with an action like following:
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleCompassTap))
compassButton.addGestureRecognizer(tapGestureRecognizer)
#objc func handleCompassTap() {
// Implement your feature when the compass button tapped.
}
Take emrepuns code
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleCompassTap))
compassButton.addGestureRecognizer(tapGestureRecognizer)
#objc func handleCompassTap() {
// Implement your feature when the compass button tapped.
}
and add this line
tapGestureRecognizer.numberOfTouchesRequired = 1
or
tapGestureRecognizer.numberOfTapsRequired = 1
In the app I'm making I have a side menu that I used SWRevealViewController template to make. I made my own animated button to be the hamburger menu button so when its pressed the side menu will open. The problem is I can't figure out how to connect my animated button to the SWRevealViewController.
Here's the button code I made.
Animated Button
self.button = HamburgerButton(frame: CGRectMake(0, 0, 30, 30))
self.button.addTarget(self, action: #selector(home.toggle(_:)), forControlEvents:.TouchUpInside)
let refreshButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Refresh,
target: self, action: #selector(home.buttonMethod))
navigationItem.leftBarButtonItem = button
and heres the button that was used for the SWRevealViewController
override func viewDidLoad() {
super.viewDidLoad()
if revealViewController() != nil {
menuButton.target = revealViewController()
menuButton.action = #selector(SWRevealViewController.revealToggle(_:))
view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
}
}
Ive done a lot of research but just can't find out how to do it. I need the button I made, which is the first code, to be the one to access the SWRevealViewController and to open and close the side menu rather then the button, which is the second code, that came with the SWRevealViewController template. Any help will be Awesome!!
This is how I do it. You can adapt this to your needs.
let singleTap = UITapGestureRecognizer(target: self, action: #selector(tapDetected))
singleTap.numberOfTapsRequired = 1
sideMenuButton.userInteractionEnabled = true
sideMenuButton.addGestureRecognizer(singleTap)
func tapDetected() {
self.revealViewController().revealToggle(self)
}
I want an action to be done once when someone swipes within a button.
My current code is as follows:
let recogniser = UISwipeGestureRecognizer(target: self, action: "didTapButton2:")
recogniser.direction = .Up
button.addGestureRecognizer(recogniser)
func didTapButton2(sender: UIGestureRecognizer!) {
//Here I want to be able to recognise which button this was sent from (they are all tagged)
let button = sender. as UIButton //Gives an error
I need to use gesture recognisers as opposed to UIControlEvents as I need the event to only fire once. Using this makes the event fire loads of times - just need it to go once:
button.addTarget(self, action: "didTapButton2:", forControlEvents: .TouchDragInside)
Does anyone have a solution? Thanks
A UIGestureRecognizer has a property called view which is the view that it is attached to. View is declared as an optional, so you need to unwrap it:
if let button = sender.view as? UIButton {
// use button
if button.tag == 10 {
// handle button tagged with 10
}
}