Question

Everytime I launch an app I want to show a view and this view should disappear on its own (example at start I see this view that in 3 second disappear as its alpha change from 1.00 to 0.00)
How can I get it?

Answer 1

You can present the image in a modal view from the app delegate. You can use a simple animation to transition the alpha from 1.0 to 0.0, e.g.

imageView.alpha = 1.0;
[UIView beginAnimations:nil context:NULL]; {
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    [UIView setAnimationDuration:3.0];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(dismissModalSelector)];
    imageView.alpha = 0.0;
} [UIView commitAnimations];

Use dismissModalSelector to set a method that removes the modal view.

It will help to set the Default.png image to the one you wish to display, and you may want to have a shorter animation since the default will appear for a second or two.