[UINavigationController setGoalName：]：无法识别的选择器发送到实例0x7964e2c0

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问题描述

我使用以下代码创建了应用。它与iOS7配合使用，但是当我使用iOS8运行时它会抛出以下错误。

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

我的firstViewcontroller.m

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";

}

我的GoalDetailsViewController.h

My GoalDetailsViewController.h

@interface GoalDetailsViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

@property (nonatomic) NSString *goalName;

提前致谢。

推荐答案

好像你的destinationviewcontroller是UINAvigationController的子类。

Seems like your destinationviewcontroller is a subclass of UINAvigationController.

试试这个：

- (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";

}

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FirstViewController