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iphoneiosanimationdrag-and-drop
Andrea Mario Lufino
Andrea Mario Lufino

Reputation: 7921

iOS - How to drag element during animation

i need to drag an element during an animation. The element fall from the top of the screen and i need the user can drag it wherever he want, even during animation Thanks

Upvotes: 0

Views: 275

Answers (2)

thelaws
thelaws

Reputation: 8001

Since you're using the UIView block based animations, try using:

animateWithDuration:delay:options:animations:completion:

with the UIViewAnimationOptionAllowUserInteraction option.

Upvotes: 0

Tiago Lira
Tiago Lira

Reputation: 2550

You can use the touchesBegan method to detect when the user touches the element.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    if (touch != nil && (touch.view == elementView))
        //do your stuff
}

Then set the element's position to the touch location, and remove the animation.

elementView.center = [touch locationInView:self.view];
[elementView.layer removeAllAnimations];

This should work. Then you can use the similar touchesMoved method to update the position during the drag.

Upvotes: 1

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