Swift: bewegen UIView auf Folie Geste

Ich versuche eine UIView auf Folie, nach-oben-Geste von seiner anfänglichen position in eine Feste Endposition. Sollte das Bild bewegen mit der hand in der Geste, und nicht animieren, unabhängig.

Habe ich noch nicht ausprobiert, da ich keine Ahnung habe, wo Sie anfangen, die Geste-Klasse zu verwenden.

InformationsquelleAutor der Frage Rao | 2016-02-05

Tat es schließlich wie unten.

let gesture = UIPanGestureRecognizer(target: self, action: Selector("wasDragged:"))
slideUpView.addGestureRecognizer(gesture)
slideUpView.userInteractionEnabled = true
gesture.delegate = self

Folgende Funktion wird aufgerufen, wenn die Geste erkannt wird, (hier bin ich, die Einschränkung der Sicht, um eine maximale centre.y 555, & ich bin das zurücksetzen zurück auf 554 wenn sich das Bild bewegt sich jenseits dieses Punktes)

func wasDragged(gestureRecognizer: UIPanGestureRecognizer) {
    if gestureRecognizer.state == UIGestureRecognizerState.Began || gestureRecognizer.state == UIGestureRecognizerState.Changed {
        let translation = gestureRecognizer.translationInView(self.view)
        print(gestureRecognizer.view!.center.y)
        if(gestureRecognizer.view!.center.y < 555) {
            gestureRecognizer.view!.center = CGPointMake(gestureRecognizer.view!.center.x, gestureRecognizer.view!.center.y + translation.y)
        }else {
            gestureRecognizer.view!.center = CGPointMake(gestureRecognizer.view!.center.x, 554)
        }

        gestureRecognizer.setTranslation(CGPointMake(0,0), inView: self.view)
    }

}

InformationsquelleAutor der Antwort Rao

Werden Sie wahrscheinlich wollen, zu einem UIPanGestureRecognizer.

let gesture = UIPanGestureRecognizer(target: self, action: Selector("wasDragged:"))
customView.addGestureRecognizer(gesture)
gesture.delegate = self

Und ziehen Sie das Objekt nur entlang der y-Achse:

func wasDragged(gesture: UIPanGestureRecognizer) {
    let translation = gesture.translationInView(self.view)

    //Use translation.y to change the position of your customView, e.g.
    customView.center.y = translation.y //Customize this.
}

InformationsquelleAutor der Antwort xoudini

Update für Swift 3.x

Bei der Vergabe der selector, der syntax hat sich geändert und erfordert nun #selector

let gesture = UIPanGestureRecognizer(target: self, action: #selector(navViewDragged(gesture:)))

    self.navLayoutView.addGestureRecognizer(gesture)
    self.navLayoutView.isUserInteractionEnabled = true
    gesture.delegate = self

Implementierung der Funktion:

func navViewDragged(gesture: UIPanGestureRecognizer){
     //Code here
}

InformationsquelleAutor der Antwort Dan Burkhardt

Swift 4:

@objc func wasDragged(gestureRecognizer: UIPanGestureRecognizer) {

    if gestureRecognizer.state == UIGestureRecognizerState.began || gestureRecognizer.state == UIGestureRecognizerState.changed {

        let translation = gestureRecognizer.translation(in: self.view)
        print(gestureRecognizer.view!.center.y)

        if(gestureRecognizer.view!.center.y < 555) {

            gestureRecognizer.view!.center = CGPoint(x: gestureRecognizer.view!.center.x, y: gestureRecognizer.view!.center.y + translation.y)

        }else {
            gestureRecognizer.view!.center = CGPoint(x:gestureRecognizer.view!.center.x, y:554)
        }
        gestureRecognizer.setTranslation(CGPoint(x: 0, y: 0), in: self.view)
    }
}

Nennen

let gesture = UIPanGestureRecognizer(target: self, action: self.wasDragged(gestureRecognizer:))
customView.addGestureRecognizer(gesture)
gesture.delegate = self

InformationsquelleAutor der Antwort Sazzad Hissain Khan

Bewegen Sicht überall im Swift 3

let panGesture = UIPanGestureRecognizer(target: self, action: #selector(dragged(gestureRecognizer:)))
demoView.isUserInteractionEnabled = true
demoView.addGestureRecognizer(panGesture)

Funktion

@objc func dragged(gestureRecognizer: UIPanGestureRecognizer) {
    if gestureRecognizer.state == UIGestureRecognizerState.began || gestureRecognizer.state == UIGestureRecognizerState.changed {
        let translation = gestureRecognizer.translation(in: self.view)
        gestureRecognizer.view!.center = CGPoint(x: gestureRecognizer.view!.center.x + translation.x, y: gestureRecognizer.view!.center.y + translation.y)
        gestureRecognizer.setTranslation(CGPoint(x: 0, y: 0), in: self.view)
    }
}

InformationsquelleAutor der Antwort Manish Mahajan

-1

@IBAction func handlePanGesture(_ recognizer: UIPanGestureRecognizer) {

    if MainView.bounds.contains(mainImage.frame) {
        let recognizerCenter = recognizer.location(in:  MainView)

        mainImage.center = recognizerCenter
    }

    if MainView.bounds.intersection(mainImage.frame).width > 50 && MainView.bounds.intersection(mainImage.frame).height > 0 {
        let recognizerCenter = recognizer.location(in: MainView)
        print(recognizerCenter)
        mainImage.center = recognizerCenter
    }

}

@IBAction func handlePinchGesture(_ recognizer: UIPinchGestureRecognizer) {

    mainImage.transform = mainImage.transform.scaledBy(x: recognizer.scale, y: recognizer.scale)
    recognizer.scale = 1.0
}

@IBAction func handleRotateGesture(_ recognizer: UIRotationGestureRecognizer) {

    mainImage.transform = mainImage.transform.rotated(by: recognizer.rotation)
    recognizer.rotation = 0.0

}

InformationsquelleAutor der Antwort Pratik Patel

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