How do I add an action to an alert view button? - xcode

Question

I am trying to set up an alert view so that when the "Ok" button is pressed, an action sheet comes up with two options. I believe i have it in the right format and there are no errors, but when I run it, nothing happens. please help and thank you in advanced.
-(IBAction)sendSG:(id)sender{
UIAlertView *message = [[UIAlertView alloc]
initWithTitle:#"Send Study Guides!"
message:#"Please send your study guides to help create a bigger and more efficent network of study guides. You can send them by email, or you can take a picture of your study guide and send it to us."
delegate:self //Changed Here
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Ok", nil];
[message show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0) {
UIActionSheet *sendOptions = [[UIActionSheet alloc]
initWithTitle:#"Add study guide"
delegate:self
cancelButtonTitle:#"Cancel"
destructiveButtonTitle:#"Destructive Button"
otherButtonTitles:#"Email", #"Take a picture", nil];
[sendOptions showInView:self.view];
}
}
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0) {
NSString *emailTitle = #"Study Guides";
NSArray *toRecipents = [NSArray arrayWithObject:#"blank#gmail.com"];
MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
[mc setSubject:emailTitle];
[mc setToRecipients:toRecipents];
[self presentViewController:mc animated:YES completion:NULL];
}
}

Answer 1

set Delegate of your alert view to self.
In your code,
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
is not being called due to this
Yes, and change your button index too… forgot to tell you that. it should be 1 for both alertView & actionSheet.
Make your viewController ActionSheet Delegate. add "UIActionSheetDelegate" in your viewController.h
#interface XYZViewController : UIViewController UIActionSheetDelegate (enclose in angular braces)
Everything Else will work fine.. Let me know if there is any issue

Answer 2

You got the wrong button index.
The button buttonIndex == 0 is the cancel button,buttonIndex == 1 is the ok button.

Answer 3

Try this in alert view's callback:
double delayInSeconds = 1.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
// show action sheet here.
});
If it works for you, modify the delayInSeconds as you wish.