I have created the app with following code. Its working fine with iOS7 but it throws the below error when I run with iOS8.
[UINavigationController setGoalName:]: unrecognized selector sent to instance 0x7964e2c0
My firstViewcontroller.m
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
GoalDetailsViewController *goalsDetailsViewController = segue.destinationViewController;
NSLog(@"%@",[NSString stringWithFormat:@"%@", [[self.arrCategoryTitle objectAtIndex:indexPath.row] objectAtIndex:indexOfCategory]]);
goalsDetailsViewController.goalName = @"Exercise Daily";
}
My GoalDetailsViewController.h
@interface GoalDetailsViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
@property (nonatomic) NSString *goalName;
Thanks in advance.
Seems like your destinationviewcontroller is a subclass of UINAvigationController.
Try this:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
GoalDetailsViewController *goalsDetailsViewController = [(UINavigationController*)segue.destinationViewController topViewController];
NSLog(@"%@",[NSString stringWithFormat:@"%@", [[self.arrCategoryTitle objectAtIndex:indexPath.row] objectAtIndex:indexOfCategory]]);
goalsDetailsViewController.goalName = @"Exercise Daily";
}
The easiest way to handle this crash would be to simply make sure that the destinationViewController is of the type you're expecting before you attempt to set a property on it. Something like this:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
GoalDetailsViewController *goalsDetailsViewController = segue.destinationViewController;
NSLog(@"%@",[NSString stringWithFormat:@"%@", [[self.arrCategoryTitle objectAtIndex:indexPath.row] objectAtIndex:indexOfCategory]]);
if ([segue.destinationViewController isKindOfClass:[GoalDetailsViewController class]]) {
GoalDetailsViewController *goalsDetailsViewController = segue.destinationViewController;
goalsDetailsViewController.goalName = @"Exercise Daily";
}
}
This change ensures that the destinationViewController is of kind GoalDetailsViewController before treating it as such.
