Question

I am Getting error message as follows...

“2014-01-28 21：17：56.878更高或更低2 [5869：70b] *由于未捕获的异常'NSUnknownKeyException'终止应用程序，原因：'[setValue：forUndefinedKey：]：此类是密钥enterButoonOut不符合密钥值编码。 * 首先抛出调用堆栈：“

//
//  ViewController.m
//  Higher or Lower 2
//
//  Created by Michael Goedken on 1/27/14.
//  Copyright (c) 2014 Michael Goedken. All rights reserved.
//
/
//  Created by Michael Goedken on 1/27/14.
//  Copyright (c) 2014 Michael Goedken. All rights reserved.
//

#import "ViewController.h"

int answer = 0;
int guess = 0;
int turn = 0;
BOOL timeStarted = NO;


@interface ViewController ()

@end

@implementation ViewController


- (IBAction)enterButton:(id)sender {
    NSString *input = _labelGuess.text;
    guess = [input intValue];
    _previousLabel.text = [NSString stringWithFormat:@"%d",guess];
    _labelGuess.text=@"";
    turn++;
    _guessesLabel.text = [NSString stringWithFormat:@"%d",turn];

    if (timeStarted == NO){
        seconds = 0;
        timer = [NSTimer scheduledTimerWithTimeInterval:.001 target:self      

selector:@selector(countUp) userInfo:nil repeats:YES];
    }
    timeStarted = YES;


    if (guess < 1 || guess > 100){
        _correct.hidden = YES;
        _lower.hidden = YES;
        _higher.hidden = YES;
        _chooseNumber.hidden = YES;
        _outOfRange.hidden = NO;
    }
    else if (guess > answer) {
        _lower.hidden = NO;
        _higher.hidden = YES;
        _chooseNumber.hidden = YES;
        _correct.hidden = YES;
        _outOfRange.hidden = YES;

    }
    else if (guess < answer) {
        _lower.hidden = YES;
        _higher.hidden = NO;
        _chooseNumber.hidden = YES;
        _correct.hidden = YES;
        _outOfRange.hidden = YES;

    }
    else {
        _correct.hidden = NO;
        _lower.hidden = YES;
        _higher.hidden = YES;
        _chooseNumber.hidden = YES;
        _outOfRange.hidden = YES;
        [timer invalidate];
        _nextButtonOut.hidden = NO;
        _enterButtonOut.hidden = YES;
        _labelGuess.hidden = YES;

    }
}




-(void) countUp {
    milliSeconds ++;
    seconds = milliSeconds / 1000;
    minutes = seconds / 60;
    remainingSeconds = seconds % 60;
    remainingMilliSeconds = milliSeconds % 1000;
    if (minutes > 0) {
         _timerLabel.text = [NSString stringWithFormat:@"%2d:%.2d", minutes, remainingSeconds];
    }
    else {
        _timerLabel.text = [NSString stringWithFormat:@"%2d:%.2d.%.3d", minutes,           

remainingSeconds, remainingMilliSeconds];
    }
}




- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [_labelGuess resignFirstResponder];

}




- (void)viewDidLoad
{
    [super viewDidLoad];

    _labelGuess.keyboardType = UIKeyboardTypeNumberPad;
    _higher.hidden = YES;
    _lower.hidden = YES;
    _correct.hidden = YES;
    _outOfRange.hidden = YES;
    answer = arc4random() % 100 + 1;
    _nextButtonOut.hidden = YES;
    NSLog(@"Answer %i", answer);
    // Do any additional setup after loading the view, typically from a nib.
} 






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


- (IBAction)nextButton:(id)sender {
    _correct.hidden = YES;
    _lower.hidden = YES;
    _higher.hidden = YES;
    _chooseNumber.hidden = YES;enter code here
    _outOfRange.hidden = YES;
    _labelGuess.hidden = YES;
    _guessesLabel.hidden = YES;
    _previousLabel.hidden = YES;
    _timerLabel.hidden = YES;
    _nextButtonOut.hidden = YES;
    _enterButtonOut.hidden = YES;
    _background.hidden = YES;
    _guesses.hidden = YES;
    _previous.hidden = YES;

}
@end










//
//  ViewController.h
//  Higher or Lower 2
//
//  Created by Michael Goedken on 1/27/14.
//  Copyright (c) 2014 Michael Goedken. All rights reserved.
//

#import <UIKit/UIKit.h>


@interface ViewController : UIViewController {
    NSTimer *timer;
    int seconds;
    int minutes;
    int remainingSeconds;
    int milliSeconds;
    int remainingMilliSeconds;

}
@property (weak, nonatomic) IBOutlet UIImageView *chooseNumber;
@property (weak, nonatomic) IBOutlet UITextField *labelGuess;
@property (weak, nonatomic) IBOutlet UIImageView *higher;
@property (weak, nonatomic) IBOutlet UIImageView *lower;
@property (weak, nonatomic) IBOutlet UIImageView *correct;
@property (weak, nonatomic) IBOutlet UIImageView *outOfRange;
@property (weak, nonatomic) IBOutlet UILabel *previousLabel;
@property (weak, nonatomic) IBOutlet UILabel *timerLabel;
@property (weak, nonatomic) IBOutlet UIButton *nextButtonOut;
@property (weak, nonatomic) IBOutlet UIButton *enterButtonOut;
@property (weak, nonatomic) IBOutlet UIImageView *background;
@property (weak, nonatomic) IBOutlet UILabel *previous;
@property (weak, nonatomic) IBOutlet UILabel *guessesLabel;
@property (weak, nonatomic) IBOutlet UILabel *guesses;


- (IBAction)nextButton:(id)sender;
- (IBAction)enterButton:(id)sender;




@end

Answer 1

当发生一些事情时，我通常会收到此错误消息。

1）我拼错了segue.identifier的值，因为我要塞到另一个模块（不确定这适用于你的情况，但这是它总是让我的地方）。 2）如果您对故事板进行了更改，那么请删除代码中的值，在故事板中不会消除连接，您必须手动进入并从故事板中删除链接。要检查，只需右键单击（或按住Ctrl键单击）故事板中的每个元素，然后记下连接。

我的猜测是，如果你看一下故事板中的那个按钮，你会看到“enterButoonOut”而不是“enterButtonOut”

希望这有帮助！

格伦

Answer 2

您输入了错误的enterButoonOut，根据您的声明，它必须是enterButtonOut：

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

无法编译错误，不知道该怎么做

2 个答案: