使用未声明的标识符'prepareForSegue'

Question

我遇到以下代码的两个问题。首先，当点击提交按钮时，应该运行userCategorySave Parse云功能，但是没有迹象表明它在我的日志中运行。

另一个问题是我收到的错误use of undeclared identifier 'prepareForSegue'。我的印象是prepareForSegue是iOS应用程序的标准部分，并且不需要声明。为什么这门课特别给我这个错误？

#import "CriteriaViewController.h"

@interface CriteriaViewController ()
@property (weak, nonatomic) IBOutlet UISegmentedControl *itemConditionSegment;
@property (weak, nonatomic) IBOutlet UISegmentedControl *itemLocationSegment;

@property (weak, nonatomic) IBOutlet UIButton *submitButton;


@end

@implementation CriteriaViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{

    [super viewDidLoad];

}





- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


- (IBAction)itemConditionSegment:(id)sender{


    UISegmentedControl *segmentedControl = (UISegmentedControl *) sender;
    NSInteger selectedSegment = segmentedControl.selectedSegmentIndex;

    if (selectedSegment == 0) {

        self.itemCondition = @"new";

    }
    else{
        self.itemCondition = @"any";
    }

}

- (IBAction)itemLocationSegment:(id)sender {



    UISegmentedControl *segmentedControl = (UISegmentedControl *) sender;
    NSInteger selectedSegment = segmentedControl.selectedSegmentIndex;

    if (selectedSegment == 0) {

        self.itemLocation = @"US";

    }
    else if (selectedSegment == 1) {

        self.itemLocation = @"WorldWide";

    }


}



//add all the info to users respective new category object
- (IBAction)submitButton:(id)sender
{
    if (self.minPrice.text.length > 0 && self.maxPrice.text.length > 0)

    {

        [PFCloud callFunctionInBackground:@"userCategorySave"
                           withParameters:@{@"categoryId": self.chosenCategory,
                                              @"minPrice": self.minPrice.text,
                                              @"maxPrice": self.maxPrice.text,
                                         @"itemCondition": self.itemCondition,
                                          @"itemLocation": self.itemLocation,}
                                         block:^(NSString *result, NSError *error) {

                                             if (!error) {
                                                 NSLog(@"Criteria successfuly saved.");

                                                     [self performSegueWithIdentifier:@"ShowMatchCenterSegue" sender:self];

                                             }
                                         }];

    }




- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{


    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.

}


@end

Answer 1

您未正确关闭}。请在上述方法prepare for seque中添加一个。