Question

I have a scrollview and imageview subviewed to scrollview.on a button click I subview another imageview and sent that image to the back of that existing image by

[nextImageView sendSubviewToBack:firstImageView];

and i want the firstImageView to fade and show the second image on a button click and on the button click i want the reverse also to be happened

Answer 1

tuning the answer of @jhilgert00…..

-(IBAction)toggleImage:(id)sender {

     if (img1.alpha==1)
     {

     [UIImageView animateWithDuration:1 // <--  Number of seconds 
                     animations:^{
                     img1.alpha = 0; 
                     img2.alpha = 1;

                     }];
     }
     else
     {
      [UIImageView animateWithDuration:1 // <--  Number of seconds 
                     animations:^{
                     img1.alpha = 1; 
                     img2.alpha = 0;

                     }];     



     }


}