iOS animation particle type

[jagatnibas]

I want an animation effect where the image view will be visible from particles gradually. like it will be particles and will gradually fill up to make the imageview shape. I dont knoe a name for this type of animation, please tell me if this is possible using UIViewAnimation

I guess the name for it will be the opposite of dissolve

 

[nickculbertson]

There are a number of ways to do this. What I would do is stack two imageviews, fill them with images that revealing more of the picture, and alternately fill and fade the imageviews.

ex. image1 L image2 L_ image3 L_/

//assume image1, 2, 3... are declared in your .h

-(IBAction)fadein1{
imageview1.alpha=0
imageview1.image=image1;

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
[UIView setAnimationDelay:.5];
imageview1.alpha=1;
[UIView commitAnimations];

[self performSelector:@selector(fadein2) withObject:nil afterDelay:1.0];
}

-(IBAction)fadein2{
imageview2.alpha=0
imageview2.image=image2;

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
[UIView setAnimationDelay:.5];
imageview2.alpha=1;
[UIView commitAnimations];

[self performSelector:@selector(fadein3) withObject:nil afterDelay:1.0];
}

-(IBAction)fadein3{
imageview1.alpha=0
imageview1.image=image3;

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
[UIView setAnimationDelay:.5];
imageview1.alpha=1;
[UIView commitAnimations];

}

Nick

 

[IDMah]

pixel dissolve

Sometimes called a pixel Dissolve..
in your case reversed..

 

[jnoxx]

UIView BeginAnimations -> old
Animation Blocks are the new thing, and cleans up your code a bit
Look it up, it's the 'new' hip thing for animating