Press-And-Hold Button for "Repeat Fire"

Press-and-hold button for repeat fire

You want rapid repeat fire when your button is held down.

Your buttonDown and buttonUp methods need to be defined at the top level, and not inside of another function. For demonstration purposes, it is clearer to forgo wiring up @IBActions from the Storyboard and just set up the button in viewDidLoad:

class ViewController: UIViewController {

    @IBOutlet weak var button: UIButton!
    var timer: Timer?
    var speedAmmo = 20

    @objc func buttonDown(_ sender: UIButton) {
        singleFire()
        timer = Timer.scheduledTimer(timeInterval: 0.3, target: self, selector: #selector(rapidFire), userInfo: nil, repeats: true)
    }

    @objc func buttonUp(_ sender: UIButton) {
        timer?.invalidate()
    }

    func singleFire() {
        print("bang!")
    }

    @objc func rapidFire() {
        if speedAmmo > 0 {
            speedAmmo -= 1
            print("bang!")
        } else {
            print("out of speed ammo, dude!")
            timer?.invalidate()
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // These could be added in the Storyboard instead if you mark
        // buttonDown and buttonUp with @IBAction
        button.addTarget(self, action: #selector(buttonDown), for: .touchDown)
        button.addTarget(self, action: #selector(buttonUp), for: [.touchUpInside, .touchUpOutside])
    }
}

Also, I changed .touchUpOutside to [.touchUpInside, .touchUpOutside] (to catch both touch up events) and call singleFire on the initial buttonDown for single fire. With these changes, pressing the button fires immediately, and then fires every 0.3 seconds for as long as the button is held down.

---

The button can be wired up in the Storyboard instead of setting it up in viewDidLoad. In this case, add @IBAction to buttonDown and buttonUp. Then Control-click on your button in the Storyboard and drag from the circle next to Touch Down to func buttonDown, and drag from the circles next to Touch Up Inside and Touch Up Outside to func buttonUp.

Way to make a UIButton continuously fire during a press-and-hold situation?

Don't use a button, use multi-touch and NSTimer:

Make a view-local NSTimer object inside your interface, then use it to start/cancel the timer

-(void)movePlayer:(id)sender {
   <Code to move player>
}

-(void)touchesBegan:(NSSet*)touches  withEvent:(UIEvent*)event {
    timer = [NSTimer scheduledTimerWithTimeInterval:0.3 target:self selector:@selector(movePlayer:) userInfo:nil repeats:YES];
}

-(void)touchesEnded:(NSSet*)touches  withEvent:(UIEvent*)event {
   if (timer != nil) 
      [timer invalidate];
      timer = nil;
}

-(void)touchesMoved:(NSSet*)touches  withEvent:(UIEvent*)event {
    if (timer != nil) {
       [timer invalidate];
       timer = nil;
    }
}

This way, you can repeat the event at a predefined interval, and not have to rely on a button, and get the repeat behaviour you're looking for.
Note the touchesMoved trigger - if they move their finger, this cancels the timer, and the player stops moving.

hold down button after 1 second and loop the action using jQuery

As I said you need to use setTimeout()

var timeout = 0;
$('#button_add').mousedown(function () {
    setTimeout(function(){
      timeout = setInterval(function () {
                   value_of_something ++;
                }, 50);         
    } , 1000);
    return false;
});

Jsfiddle

UIButton with hold down action and release action

try this

  UIButton *aButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  aButton.frame = CGRectMake(xValue, yValue, 45, 45);
  [aButton addTarget:self action:@selector(holdDown) forControlEvents:UIControlEventTouchDown];
  [aButton addTarget:self action:@selector(holdRelease) forControlEvents:UIControlEventTouchUpInside];

 - (void)holdDown
  {
     NSLog(@"hold Down");
  }

  - (void)holdRelease
  {
      NSLog(@"hold release");

  }

for NSPratik's case: u can use the event UIControlEventTouchUpOutside If user long press button and after some time, instead of releasing the finger, user will move his/her finger out of the bounds of button. just add one more event.

  UIButton *aButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  aButton.frame = CGRectMake(xValue, yValue, 45, 45);
  [aButton addTarget:self action:@selector(holdDown) forControlEvents:UIControlEventTouchDown];
  [aButton addTarget:self action:@selector(holdRelease) forControlEvents:UIControlEventTouchUpInside];
  [aButton addTarget:self action:@selector(holdReleaseOutSide) forControlEvents:UIControlEventTouchUpOutside]; //add this for your case releasing the finger out side of the button's frame

 //add this method along with other methods 
  - (void)holdReleaseOutSide
  {
     NSLog(@"hold release out side");
  }

Swift Version

 var  aButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
 aButton.frame = CGRectMake(xValue,yValue, 45, 45)
 aButton.setTitle("aButton", forState: UIControlState.Normal)
 aButton.backgroundColor = UIColor.greenColor()
 aButton.addTarget(self, action: Selector("holdRelease:"), forControlEvents: UIControlEvents.TouchUpInside);
 aButton.addTarget(self, action: Selector("HoldDown:"), forControlEvents: UIControlEvents.TouchDown)
 self.addSubview(aButton)

 //target functions   
 func HoldDown(sender:UIButton)
 {
    print("hold down")
 }

 func holdRelease(sender:UIButton)
 {
    print("hold release")
 }

---

Related Topics