CODEWITHSUNDEEP
swift
Raymond Rangel
Raymond Rangel

Reputation: 149

UIView.animation only running once?

The following code runs once and it doesn't even animate..it just appears 20 pixels higher. Any idea why? What I want is for the button to move up and down forever.

scrollButton.frame = CGRectMake(CGRectGetMidX(self.view.frame)-20, (self.view.frame.size.height-64)*1-80, 40, 16)
scrollButton.setImage(UIImage(named: "ARROW.png"), forState: .Normal)
scrollButton.tintColor = UIColor.whiteColor()

self.scrollView.addSubview(scrollButton)

UIView.animateWithDuration(1.0, delay: 0, options: UIViewAnimationOptions.Repeat | UIViewAnimationOptions.Autoreverse, animations: {
    self.scrollButton.frame.origin.y -= 20
}, completion: nil)

Upvotes: 4

Views: 923

Answers (2)

MLBDG
MLBDG

Reputation: 1367

Although this question is quite old I wanted to add some light to new users.

UIView Animations doesn't work well when called from viewDidLoad try calling it instead from viewWillAppear.

Hope it helps.

Upvotes: 1

يعرب المصطفى
يعرب المصطفى

Reputation: 125

I am not sure if that is going to work well , you can make two functions and each one has to move the body and then call the other one . You can use a boolean variable to stop the functions work.

Upvotes: 0

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