iPhone: UIImageView Fades in - Howto?
21,701
Solution 1
Initially set the alpha of your imageview as 0 as imageView.alpha = 0;
- (void)fadeInImage
{
[UIView beginAnimations:@"fade in" context:nil];
[UIView setAnimationDuration:1.0];
imageView.alpha = 1.0;
[UIView commitAnimations];
}
Solution 2
Change the animation duration to what ever length you want.
UIImageView *myImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myImage.png"]];
myImageView.center = CGPointMake(100, 100);
myImageView.alpha = 0.0;
[self.view addSubview:myImageView];
[UIView animateWithDuration:5.0 animations:^{
myImageView.alpha = 1.0;
}];
Solution 3
Use below in your UIViewController
// add the image view
[self.view addSubview:myImageView];
// set up a transition animation
CATransition *animate = [CATransition animation];
[animate setDuration:self.animationDelay];
[animate setType:kCATransitionPush];
[animate setSubtype:kCATransitionFade];
[animate setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[[self layer] addAnimation:animate forKey:@"fade in"];
Solution 4
this simple code:
[UIView animateWithDuration:5.0 animations:^{
theImage.alpha = 1.0;
}];
the UIImage
is in the view and is connected via an IBOutlet
you can also, set the alpha from the utility panel.
Solution 5
I would use UIView's +transitionWithView:duration:options:animations:completion: It is very efficient and powerful.
[UIView transitionWithView:imgView duration:1 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
imgView.image = [UIImage imageNamed:@"MyImage"];
} completion:nil];
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Author by
Ian Vink
https://mvp.microsoft.com/en-us/PublicProfile/5002789?fullName=Ian%20Vink
Updated on November 03, 2020Comments
-
Ian Vink about 3 years
I have an
UIImageView
that I want to fade in.Is there a way to enable that on an underlying
UIViewController
?I have translated the simplest answer, though they all work,
C# .NET
for theMonoTouch
users:public override void ViewDidAppear (bool animated) { base.ViewDidAppear (animated); UIView.BeginAnimations ("fade in"); UIView.SetAnimationDuration (1); imageView.Alpha = 1; UIView.CommitAnimations (); }
-
clankill3r over 10 yearsIS it possible to only animate the UIImageView and not the UIView? (and if so how?)
-
ghiboz over 9 yearsworked for me: I've added a
UIImageView
from the UI editor and after (i needed to fade out the imageview) simply added the last 3 rows of the example (with alpha = 0.0) and is ok!