CODEWITHSUNDEEP
iphoneobjective-ciosnstimer
Aluminum
Aluminum

Reputation: 2992

Make a button visible after some time with NSTimer

I'm trying to develop a new application for iOS but I'm stuck with NSTimer :-(. Currently I have a void function which hides an UIButton after the user taps twice or more on the screen and a NSTimer. I want to make the button visible again after the NSTimer reaches 5 seconds and stop and reset it right after in order to re-hide it after the user taps twice again :-) but I don't know how to tell the app that 5 seconds have passed :-/.

Can someone help me, please? :-)

Here's the code so far :-)

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    NSUInteger numTaps = [[touches anyObject] tapCount];

    if (numTaps >= 2)
    {
        // Other code//

        [self.button setHidden:YES];
        buttonHideTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 invocation:nil repeats:NO];

        // Other code //
    }
}

Thanks!

Upvotes: 0

Views: 486

Answers (1)

David Brunow
David Brunow

Reputation: 1299

The timer needs to have a selector, which will tell the timer what to do after the time has passed:

buttonHideTimer = [NSTimer scheduledTimerWithTimeInterval:5.0 target:self selector:@selector(showButtonNow) userInfo:nil repeats:NO];

Upvotes: 3

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