Button should be visible when the user is done selecting the value through slider

I need to implement such kind of functionality in my slider such that the submit button should not appear till the us开发者_如何转开发er pull up his fingers from slider. Is there any kind of function which can duplicate this.

Thanks,

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The UISlider has a continuous property. Set this to NO, and you will only receive valueChanged events when the user is done choosing his value. Then add a target for the valueChanged event, and there you can set the button to be enabled.

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If you can't set continuous to NO for some reason, observe the UIControlEventTouchUpOutside and UIControlEventTouchUpInside events:

[yourSlider addTarget:self 
               action:@selector(showSubmit:) 
     forControlEvents:UIControlEventTouchUpInside|UIControlEventTouchUpOutside];

And

- (void)showSubmit:(UISlider *) {
    // code to show your button here
}