Having trouble with switch button

Question

The Switch button by default is in the OFF state. When the user selects the ON state a modal view will display. This is what I have to invoke the process but its not working. Please help. I have this set up in a nib but I can also do it programatically just want the darn thing to work...Thanks!

MyViewController.h

- (IBAction)offSwitchChange:(id)sender;

@end

MyViewController.m

- (IBAction)offSwitchChange:(id)sender
{
    if (self.myKeyPadViewController == nil)
        self.myKeyPadViewController = [[[KeyPadViewController alloc] initWithNibName:
               NSStringFromClass([KeyPadViewController class]) bundle:nil] autorelease];

    [self.navigationController presentModalViewController:self.myKeyPadViewController animated:YES];
}

@end

Answer 1

You might want to detect the change event like this instead:

// Do this in viewDidLoad
[switch addTarget:self action:@selector(switched) forControlEvents:UIControlEventValueChanged];

// Then implement it like this
- (void)switched;
{
    if ([switch isOn])
    {
        if (self.myKeyPadViewController == nil)
            self.myKeyPadViewController = [[[KeyPadViewController alloc] init] autorelease];

        [self.navigationController presentModalViewController:self.myKeyPadViewController animated:YES];
    }
}

Create an IBOutlet UISwitch called switch in your view controller and hook it up in IB.

UPDATE:

Here is some actual code I tested:

#import "SwitchResponderViewController.h"

@implementation SwitchResponderViewController


- (void)viewDidLoad {
    [super viewDidLoad];
    [sw addTarget:self action:@selector(switched) forControlEvents:UIControlEventValueChanged];
}

- (void)dealloc {
    [secondController release], secondController = nil;
    [super dealloc];
}

- (void)switched;
{
    if ([sw isOn])
    {
        NSLog(@"On");
        if (!secondController)
            secondController = [[SecondViewController alloc] init];

        [self presentModalViewController:secondController animated:YES];
    }
    else
    {
        NSLog(@"Off");
    }

}

@end

Hope that helps.

Answer 2

This what I have...

import

import "KeyPadViewController.h"

@interface ModalViewController : UIViewController { IBOutlet UISwitch *switch; KeyPadViewController *myModalViewController; }

@property (nonatomic, retain) IBOutlet UISwitch *switch; @property (nonatomic, retain) KeyPadViewController *myKeyPadViewController;

• (IBAction)dismissAction:(id)sender;

@end

---

import "ModalViewController.h"

import "KeyPadViewController.h"

@implementation ModalViewController

@synthesize myKeyPadViewController;

• (void)viewDidLoad { [super viewDidLoad]; [switch addTarget:self action:@selector(switched) forControlEvents:UIControlEventValueChanged];

}

• (void)dealloc { //if (self.myKeyPadViewController != nil) //[myKeyPadViewController release]; [super dealloc]; }

• (void)viewDidUnload { }

• (IBAction)dismissAction:(id)sender { [self.parentViewController dismissModalViewControllerAnimated:YES]; }

• (void)switched; { if ([switch isOn]) { if (self.myKeyPadViewController == nil) self.myKeyPadViewController = [[[KeyPadViewController alloc] init] autorelease];

  [self.navigationController presentModalViewController:self.myKeyPadViewController animated:YES];
  

  } }

@end