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POthis class is not key value coding-compliant for the key error
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  1. POthis class is not key value coding-compliant for the key error
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    copied!<p>My problem is when I build the application it has this error</p> <pre><code>Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;FirstViewController 0x717ea40&gt; setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key hourTimeOutOfBraceChanged.' </code></pre> <p>Here is my header file</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #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 </code></pre> <p>Here is my m file:</p> <pre><code>#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 &lt; 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 &lt; 0) { self.brace.timeOutOfBrace.todayMinutes = 45; self.brace.timeOutOfBrace.todayHours -= 1; } if (self.brace.timeOutOfBrace.todayMinutes &gt; 45) { self.brace.timeOutOfBrace.todayMinutes = 0; self.brace.timeOutOfBrace.todayHours += 1; } } @end </code></pre> <p>I honestly have tried every possible solution that I know. I checked all the connecctions to my view and they were fine. Thank you in advance.</p>
 

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