How to create a custom UIButton inside UIAlertView

So I'm trying to embed a toggleable (is that a word?) "Do not show this again" button inside a UIAlertView, but I'm running into some trouble that I can't seem to get around.

Here is my non-working code thus far...

EDITED: I added the button's method, and made some changes in the original code. 开发者_Python百科Now I get the button to react to the press but the result is a crash. Any help?

if (![[NSUserDefaults standardUserDefaults] objectForKey:@"disclaimer"]){


UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"DISCLAIMER" 
                                                message:@"This program is a blah blah"
                                               delegate:self 
                                      cancelButtonTitle:nil
                                      otherButtonTitles:@"I Agree", nil];

UILabel *alertLabel = [[UILabel alloc] initWithFrame:CGRectMake(30, 230, 260, 50)];
alertLabel.backgroundColor = [UIColor clearColor];
alertLabel.textColor = [UIColor whiteColor];
alertLabel.text = @"Do not show again";
[alert addSubview:alertLabel];
[alertLabel release];

//declared alertCheckboxButton in the header due to errors I was getting when referring to the button in the button's method below
alertCheckboxButton = [UIButton buttonWithType:UIButtonTypeCustom];
alertCheckboxButton.frame = CGRectMake(200, 247, 16, 16);
alertCheckboxButton.backgroundColor = [UIColor clearColor];
UIImage *alertButtonImageNormal = [UIImage imageNamed:@"checkbox.png"];
UIImage *alertButtonImagePressed = [UIImage imageNamed:@"checkbox-pressed.png"];
UIImage *alertButtonImageChecked = [UIImage imageNamed:@"checkbox-checked.png"];
[alertCheckboxButton setImage:alertButtonImageNormal forState:UIControlStateNormal];
[alertCheckboxButton setImage:alertButtonImagePressed forState:UIControlStateHighlighted];
[alertCheckboxButton setImage:alertButtonImageChecked forState:UIControlStateSelected];
[alertCheckboxButton addTarget:self action:@selector(alertCheckboxButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

//made the button a subview of alert rather than alertLabel
[alert addSubview:alertCheckboxButton];  
[alert show];

//moved alertCheckboxButton release to (void)dealloc
[alert release];    

}


-(void)alertCheckboxButtonClicked{

if (![[NSUserDefaults standardUserDefaults] objectForKey:@"disclaimer"]){

    [[NSUserDefaults standardUserDefaults] setBool:TRUE forKey:@"disclaimer"];
    alertCheckboxButton.selected = YES;
}else {

    [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"disclaimer"];
    alertCheckboxButton.selected = NO;
    }

}

---

If you want to make this button as toggle then assign a tag to this button, then in its event function check for tag if it is 0 then set it to 1 and also set a BOOL there. When you are adding it to alert then check for the BOOL value if that is true change you button image and tag also.

---

DUH! My code works. Just had to delete the : in @selector(alertCheckboxButtonClicked:)

Isn't it always something simple?

---

I think you simply want to toggle the "selected" property of the UIControl. When "selected" is YES is when the image for UIControlStateSelected will be used...

The typical iOS equivalent of a checkbox is the UISwitch, with it's "on" property.