Question

I have a UISegmentedControl set up in my XIB. I want it to appear on viewDidLoad and if the user taps the area of the screen it’s in, and then to disappear if the user taps it again or to fade out if the user leaves it alone.

In looking around for how to manage this I’ve found a lot of stuff about fading UIViews, but not as much on fading individual subviews, and little at all on fading elements in the XIB. I tried to adapt the UIView stuff but failed.

How can I make this work?

EDIT: Okay, I’ve got the appearance at viewDidLoad and the fade out working. But when the user taps the area where the UISegmentedControl is (now invisible because alpha=0), nothing happens. This is the code I’m using:

- (IBAction)tapInvisibleSegContr
//This is connected to the UISegmentedControl with the action Touch Up Inside.  Until now, the segmented control has been at alpha=0 since fading after viewDidLoad.
{
    self.segContrAsOutlet.alpha=1.0;
    [self fadeMethodThatWorksInViewDidLoad];
    NSLog(@"Yup, tapped.");
}

I’m not even getting the NSLog. I’ve got the action hooked up to the UISegmentedControl, with the action Touch Up Inside. What am I missing?

Answer 1

If it is resident in a xib, just put his alpha to 0, do the properly connections: an Outlet and an IBAction for value changed
Then in the viwDidLoad right after [super viewDidLoad] write:

[UIView animateWithDuration:1 animations:^{self.mySegOutlet.alpha = 1;}];

Inside the IBAction right after you code the answer before the last } write:

[UIView animateWithDuration:1 animations:^{self.mySegOutlet.alpha = 0;}];

This is the easiest method.
Bye