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私の問題は、アプリケーションをビルドすると、このエラーが発生することです

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<FirstViewController 0x717ea40> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key hourTimeOutOfBraceChanged.'

これが私のヘッダーファイルです

#import <UIKit/UIKit.h>
#import "Brace.h"

@interface FirstViewController : UIViewController
@property (weak, nonatomic) IBOutlet UILabel *timeOutOfBraceLabel;
@property (weak, nonatomic) IBOutlet UILabel *weeklyGoalLabel;
@property (strong, nonatomic) Brace *brace;

- (IBAction)minuteTimeOutOfBraceChanged:(id)sender;
//- (IBAction)hourTimeOutOfBraceChanged:(id)sender;

- (void)updateUI;
- (void)retreiveData;
- (void)checkTime;

@end

これが私のmファイルです：

#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (Brace *)brace {
if (!_brace) {
    _brace = [[Brace alloc] init];
}
return _brace;
}

- (void)viewDidLoad
{
[self retreiveData];
[self updateUI];
[super viewDidLoad];
}

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

- (void)updateUI {
// Update timeOutOfBrace
NSString *timeOutOfBraceString = [[NSString alloc] init];
NSString *timeOutOfBraceHoursString = [[NSString alloc] init];
NSString *timeOutOfBraceMinutesString = [[NSString alloc] init];
NSLog(@"%d", self.brace.timeOutOfBrace.todayHours);
timeOutOfBraceHoursString = [NSString stringWithFormat:@"%d", self.brace.timeOutOfBrace.todayHours];
if (self.brace.timeOutOfBrace.todayMinutes < 10) {
    timeOutOfBraceMinutesString = [NSString stringWithFormat:@"0%d", self.brace.timeOutOfBrace.todayMinutes];
}
else {
    timeOutOfBraceMinutesString = [NSString stringWithFormat:@"%d", self.brace.timeOutOfBrace.todayMinutes];
}
timeOutOfBraceString = [NSString stringWithFormat:@"%@:%@", timeOutOfBraceHoursString, timeOutOfBraceMinutesString];
self.timeOutOfBraceLabel.text = timeOutOfBraceString;

// Update weeklyGoal
NSString *weeklyGoalString = [[NSString alloc] init];
NSString *totalHoursThisWeekString = [[NSString alloc] init];
int totalHoursThisWeekDecimal = self.brace.timeOutOfBrace.overallHours + round(self.brace.timeOutOfBrace.overallMinutes/60);
totalHoursThisWeekString = [NSString stringWithFormat:@"%d", totalHoursThisWeekDecimal];
weeklyGoalString = [NSString stringWithFormat:@"%d", self.brace.timeOutOfBrace.goalForWeek];
self.weeklyGoalLabel.text = [NSString stringWithFormat:@"%@/%@", totalHoursThisWeekString, weeklyGoalString];
}

- (void)retreiveData {
self.brace.timeOutOfBrace.todayHours = 4;
self.brace.timeOutOfBrace.todayMinutes = 0;
self.brace.timeOutOfBrace.overallHours = 12;
self.brace.timeOutOfBrace.overallMinutes = 0;
self.brace.timeOutOfBrace.goalForWeek = 28;
}

- (IBAction)minuteTimeOutOfBraceChanged:(id)sender {
if ([[sender currentTitle] isEqualToString:@"+"]) {
    self.brace.timeOutOfBrace.todayMinutes = [self.brace timeOutOfBraceChanged:YES
                                                                              :@"minutes"
                                                                              :self.brace.timeOutOfBrace.todayMinutes];
}
else {
    self.brace.timeOutOfBrace.todayMinutes = [self.brace timeOutOfBraceChanged:NO
                                                                              :@"minutes"
                                                                              :self.brace.timeOutOfBrace.todayMinutes];
}
[self checkTime];
}

- (IBAction)hourTimeOutOfBraceChanged:(id)sender {
if ([[sender currentTitle] isEqualToString:@"+"]) {
    self.brace.timeOutOfBrace.todayMinutes = [self.brace timeOutOfBraceChanged:YES
                                                                              :@"hours"
                                                                              :self.brace.timeOutOfBrace.todayHours];
}
else {
    self.brace.timeOutOfBrace.todayMinutes = [self.brace timeOutOfBraceChanged:NO
                                                                              :@"hours"
                                                                              :self.brace.timeOutOfBrace.todayHours];
}
[self checkTime];
} 

- (void)checkTime {
if (self.brace.timeOutOfBrace.todayMinutes < 0) {
    self.brace.timeOutOfBrace.todayMinutes = 45;
    self.brace.timeOutOfBrace.todayHours -= 1;
    }
    if (self.brace.timeOutOfBrace.todayMinutes > 45) {
        self.brace.timeOutOfBrace.todayMinutes = 0;
        self.brace.timeOutOfBrace.todayHours += 1;
    }
}

@end

正直なところ、私が知っているすべての可能な解決策を試しました。ビューへのすべての接続を確認しましたが、問題ありませんでした。前もって感謝します。

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2 に答える 2

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nib ファイルを使用して FirstViewController オブジェクトを作成しているようです。あなたはおそらく次のようなことをしています：

[[[FirstViewController alloc] initWithNibName:@"AnOtherXibFile" bundle:nil] autorelease];

これは、AnOtherXibFile.xib ファイルにコンパイルされるビューに好まれる FirstViewController オブジェクトを作成することを意味します。

正しいxibファイルでFirstViewControllerを作成したことを再確認できますか?
次のようなものが必要です。

[[[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] autorelease];

または、正しいxibを使用している場合は、ViewControllerへのすべての参照を再確認してください...

于 2013-07-04T18:11:34.107 に答える