UIImageView blinking animation

Question

I am trying to make a UIImageView blink upon viewDidLoad. I am not sure what the best way to do this is. I've tried using loops with .hidden=YES and .hidden=NO but this seems like a bad way to do this. I need some proper advice.

Answer 1

If you have just want to hide and show then use NStimer For that purpose something like this

in .h file add this property @property (nonatomic, strong) NSTimer *timer;

- (void)onTimerEvent:(NSTimer*)timer
{
    self.imageView.hidden = !self.imageView.hidden;
}
- (void)viewDidLoad
{
    [super viewDidLoad];
    self.timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(onTimerEvent:) userInfo:nil repeats:YES];
}

Swift:

func onTimerEvent(timer: Timer) {
    self.imageView.isHidden = !self.imageView.isHidden
}

public override func viewDidLoad() {
    super.viewDidLoad()
    Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(onTimerEvent(timer:)), userInfo: nil, repeats: true)
}

But UIImageView can animate different images as well something like this

self.iamgeView.animationImages = <arrayOfImages>
self.imageView.duration = <duration>