Question

I am changing a value with UISlider and this value is the number of my PDF pages , so when users sliding they can navigate through the pages , because of tiles rendering I need set continuous property to NO, also I need a live page counter that uses with the same slider, so the property should be YES :, how can I set the property yes or no for specific codes with the same slider ?

this part , the property should be NO

navSlider.continuous = NO;
     pageInt = CGPDFDocumentGetNumberOfPages(pdfscroll.pdf);
     prgress = (int)(navSlider.value + 0.5);
    navSlider.maximumValue = pageInt;
    navSlider.minimumValue = 1;
    [bookController moveToPage:prgress];

and here yes :

navSlider.continuous = YES;
    NSString *numberOfPage = [NSString stringWithFormat:@"%d of %d",prgress,pageInt];
    pageCounter.text = numberOfPage; 

Answer 1

You clearly do need to know about every slider change, so it must be continuous. However, you should not call [bookController moveToPage:prgress]; after every single slider movement. The solution is to update the page number for every slider movement, but only call [bookController moveToPage:prgress]; when the slider is released.