UISlider iPhone SDK问题

Question

Okay. In Xcode, I want my application to run a line of code once the UISlider gets to 1.00 or the end of the slider. How would I do this?

Answer 1

Add these to your UIViewController.

In your .h, below the interface:

-(IBAction)sliderChangedValue:(id) sender;

In your .m:

-(IBAction)sliderChangedValue:(id) sender {
    if([sender isKindOfClass:[UISlider class]]) {
        UISlider *slider = (UISlider *)sender;
        if(slider.value == 0.0 || slider.value == 1.0) {
            //your line of code
        }
    }
}

Then in Interface Builder connect Value Changed of your UISlider to this method.

Answer 2

Write an IBAction method, and connect it to your UISlider in Interface Builder, selecting "On Changed Value" in the dialog that will appear. Then add some code like this to the method:

if(mySlider.value == 1.0f){
    //Insert your code here
}

--James