我如何在UIViewController中创建滑块

Question

How can i make controller1 slide up and down by creating slider in it

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {


switch (buttonIndex) {

    case 0:{

        //Devanagari view display 

        ButtonViewController *controller1 = [[ButtonViewController alloc]init];

        controller1.delegate = self;

        UINavigationController *navigationController = [[UINavigationController alloc]
                                                        initWithRootViewController:controller1];
        navigationController.navigationBar.tintColor = [UIColor colorWithHue:2.0/12 saturation:2.0 brightness:4.0/10 alpha:1.0];

        [self presentModalViewController:navigationController animated:YES];

        [navigationController release];

        break;
    }

I got this from User Experience Coding How-To's from Apple Reference for creating slider

CGRect frame = CGRectMake(0.0, 0.0, 200.0, 10.0);
UISlider *slider = [[UISlider alloc] initWithFrame:frame];
[slider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
[slider setBackgroundColor:[UIColor clearColor]];
slider.minimumValue = 0.0;
slider.maximumValue = 50.0;
slider.continuous = YES;
slider.value = 25.0;

I added this whole thing right below UIText View in controller1 but controller1 is not sliding up and down.

Appreciate help.

Answer 1

From what I can tell about what you are trying to do, I think you should be using a UIScrollView and taking control of its contentOffset property. I threw together a quick example app, hopefully its what you are trying to do.

http://cl.ly/2Z3D1D0W1m332y313v0A