Move UIButtons back when I click on image in swift - ios

Question

I need to move UIButtons inside the view when I tap on image, and need to move UIButtons out of the screen when I tap on same image again.
When I tap on a UIImage, 4 UIButtons move inside screen with following code without a problem.
func imageTapped(img: AnyObject)
{UIView.animateWithDuration(0.5,
delay: 0,
options: [.CurveEaseInOut, .AllowUserInteraction],
animations: {
self.imageReceivedTrashCan.center = CGPoint(x: 30, y: 530)
self.imageReceivedRightArrow.center = CGPoint(x: 285, y: 530)
self.imageReceivedForward.center = CGPoint(x: 160, y: 530)
self.imageReceivedCross.center = CGPoint(x: 30, y: 30)
},
completion: { finished in
print("Objects moved!")
})
}
But, I couldn't find a way how can I move UIButtons back to original locations when I click on same image again. Appreciate your help.

Answer 1

Even if this seems really old-school, w/o any autolayout and I randomly guessed you don't change the center's elsewhere and all center's at once:
func imageTapped(img: AnyObject) {
if (self.imageReceivedTrashCan.center == CGPoint(x: 30, y: 530)) {
UIView.animateWithDuration(0.5,
delay: 0,
options: [.CurveEaseInOut, .AllowUserInteraction],
animations: {
self.imageReceivedTrashCan.center = CGPoint(x: -30, y: -530)
self.imageReceivedRightArrow.center = CGPoint(x: -285, y: -530)
self.imageReceivedForward.center = CGPoint(x: -160, y: -530)
self.imageReceivedCross.center = CGPoint(x: -30, y: -30)
},
completion: { finished in
print("Objects moved!")
})
} else {
UIView.animateWithDuration(0.5,
delay: 0,
options: [.CurveEaseInOut, .AllowUserInteraction],
animations: {
self.imageReceivedTrashCan.center = CGPoint(x: 30, y: 530)
self.imageReceivedRightArrow.center = CGPoint(x: 285, y: 530)
self.imageReceivedForward.center = CGPoint(x: 160, y: 530)
self.imageReceivedCross.center = CGPoint(x: 30, y: 30)
},
completion: { finished in
print("Objects moved!")
})
}
}

Answer 2

Firstly, to answer your question :
You can save the initial position for each button then on the second tap you call animateWithDuration:delay:options:animations:completion: and set the position to self.imageReceivedTrashCan.center = initialPosition
You also can try with translation methods from CoreGraphics.
UIView.animateWithDuration(0.5,
delay: 0,
options: [.CurveEaseInOut, .AllowUserInteraction],
animations: {
self.imageReceivedTrashCan.transform = CGAffineTransformMakeTranslation(300, 0)
....
},
completion: { finished in
print("Objects moved!")
})
}
Then on the second tap get back to the Identity transform
UIView.animateWithDuration(0.5,
delay: 0,
options: [.CurveEaseInOut, .AllowUserInteraction],
animations: {
self.imageReceivedTrashCan.transform = CGAffineTransformIdentity
....
},
completion: { finished in
print("Objects moved!")
})
}
But this method is hard coded, you should use autoLayout to make this kind of animations. Look at here
Hope this help you ;)

Answer 3

Select imageView, goto attribute inspector and Check user interaction enabled
UITapGestureRecognizer *TapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(moveMyView:)];
[imageview addGestureRecognizer: TapRecognizer];
- (void) moveMyView:(UITapGestureRecognizer*)sender {
[UIView animateWithDuration:1.0 delay:0.0 options:
UIViewAnimationOptionCurveEaseIn animations:^{
self.imageReceivedTrashCan.center = CGPoint(x: -30, y: -530)
self.imageReceivedRightArrow.center = CGPoint(x: -285, y: -530)
self.imageReceivedForward.center = CGPoint(x: -160, y: -530)
self.imageReceivedCross.center = CGPoint(x: -30, y: -30)
} completion:^ (BOOL completed) {}];
}];
}