objective-c選項卡式應用程序，線程1信號：SIGABRT

我正在xCode中的選項卡式應用程序模板中編寫應用程序。沒有任何代碼，該應用程序將切換標籤沒有問題。objective-c選項卡式應用程序，線程1信號：SIGABRT

將代碼添加到第一個視圖控制器後，嘗試切換選項卡時出現錯誤。

這裏是錯誤消息：

2012-04-26 09:43:01.171 Triangle Solver[9516:f803] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<TriSecondViewController 0x68827d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key solve.' 
*** First throw call stack: (0x13ce022 0x155fcd6 0x13cdee1 0x9c6022 0x937f6b 0x937edb 0x952d50 0x23a71a 0x13cfdea 0x13397f1 0x23926e 0xdf1fc 0xdf779 0xdf99b 0xfb0a9 0xfaedd 0xf94aa 0xf934f 0xfae14 0x13cfe99 0x1b14e 0x1b0e6 0x2434bd 0x13cfe99 0x1b14e 0x1b0e6 0xc1ade 0xc1fa7 0xc1b13 0x245c48 0x13cfe99 0x1b14e 0x1b0e6 0xc1ade 0xc1fa7 0xc1266 0x403c0 0x405e6 0x26dc4 0x1a634 0x12b8ef5  0x13a2195 0x1306ff2 0x13058da 0x1304d84 0x1304c9b 0x12b77d8 0x12b788a 0x18626 0x2a0d 0x2975) terminate called throwing an exception(lldb)

firstViewResponder.h：＃進口

@interface TriFirstViewController : UIViewController 
@property (weak, nonatomic) IBOutlet UITextField *triText1; 
@property (weak, nonatomic) IBOutlet UITextField *triText2; 
- (IBAction)calc:(id)sender; 
@property (weak, nonatomic) IBOutlet UILabel *legA; 
@property (weak, nonatomic) IBOutlet UILabel *legB; 
@property (weak, nonatomic) IBOutlet UILabel *hypotenuse; 
@property (weak, nonatomic) IBOutlet UILabel *angleA; 
@property (weak, nonatomic) IBOutlet UILabel *angleB; 

@property (weak, nonatomic) IBOutlet UIButton *button1; 

@property (copy, nonatomic) NSString *text1; 
@property (copy, nonatomic) NSString *text2; 

@end

secondViewController.h：

@interface TriSecondViewController : UIViewController 
@property (weak, nonatomic) IBOutlet UITextField *sines1; 
@property (weak, nonatomic) IBOutlet UITextField *sines2; 
@property (weak, nonatomic) IBOutlet UITextField *sines3; 
- (IBAction)solve2:(id)sender; 
@property (weak, nonatomic) IBOutlet UILabel *angleA; 
@property (weak, nonatomic) IBOutlet UILabel *sideA; 
@property (weak, nonatomic) IBOutlet UILabel *angleB; 
@property (weak, nonatomic) IBOutlet UILabel *sideB; 
@property (weak, nonatomic) IBOutlet UILabel *angleC; 
@property (weak, nonatomic) IBOutlet UILabel *sideC; 

@property (weak, nonatomic) IBOutlet UISegmentedControl *segControl; 
- (IBAction)aassas:(id)sender; 
@property (weak, nonatomic) IBOutlet UILabel *sine1; 
@property (weak, nonatomic) IBOutlet UILabel *sine2; 
@property (weak, nonatomic) IBOutlet UILabel *sine3; 

@end

firstViewController.m： @interface TriFirstViewController（）

@end 

@implementation TriFirstViewController 
@synthesize legA; 
@synthesize legB; 
@synthesize hypotenuse; 
@synthesize angleA; 
@synthesize angleB; 
@synthesize button1; 
@synthesize triText1; 
@synthesize triText2; 

@synthesize text1; 
@synthesize text2; 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)viewDidUnload 
{ 
    [self setTriText1:nil]; 
    [self setTriText2:nil]; 
    [self setLegA:nil]; 
    [self setLegB:nil]; 
    [self setHypotenuse:nil]; 
    [self setAngleA:nil]; 
    [self setAngleB:nil]; 
    [self setButton1:nil]; 
    [super viewDidUnload]; 
    // Release any retained subviews of the main view. 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    return YES; 
} 

- (IBAction)calc:(id)sender 
{ 
    double aa = 0; 
    double ab = 0; 
    double la = 0; 
    double lb = 0; 
    double h = 0; 

    self.text1 = self.triText1.text; 
    self.text2 = self.triText2.text; 

    aa = [self.text1 doubleValue]; 
    lb = [self.text2 doubleValue]; 

    ab = 90 - aa; 

    la = (tan((aa * (M_PI/180))) * lb); 
    h = (pow(la, 2) + pow(lb, 2)); 
    h = sqrt(h); 

    self.legA.text = [NSString stringWithFormat: @"%.2lf", la]; 
    self.legB.text = [NSString stringWithFormat: @"%.2lf", lb]; 
    self.angleA.text = [NSString stringWithFormat: @"%.2lf", aa]; 
    self.angleB.text = [NSString stringWithFormat: @"%.2lf", ab]; 
    self.hypotenuse.text = [NSString stringWithFormat: @"%.2lf", h]; 
} 

@end

secondViewController.m：

@interface TriSecondViewController() 

@end 

@implementation TriSecondViewController 
@synthesize sine1; 
@synthesize sine2; 
@synthesize sine3; 
@synthesize angleA; 
@synthesize sideA; 
@synthesize angleB; 
@synthesize sideB; 
@synthesize angleC; 
@synthesize sideC; 
@synthesize segControl; 
@synthesize sines1; 
@synthesize sines2; 
@synthesize sines3; 

BOOL mode = NO; 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)viewDidUnload 
{ 
    [self setSines1:nil]; 
    [self setSine2:nil]; 
    [self setSines3:nil]; 
    [self setAngleA:nil]; 
    [self setAngleB:nil]; 
    [self setAngleC:nil]; 
    [self setSideA:nil]; 
    [self setSideB:nil]; 
    [self setSideC:nil]; 
    [self setSine1:nil]; 
    [self setSine2:nil]; 
    [self setSine3:nil]; 
    [self setSegControl:nil]; 
    [super viewDidUnload]; 
    // Release any retained subviews of the main view. 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { 
     return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); 
    } else { 
     return YES; 
    } 
} 

- (IBAction)solve2:(id)sender 
{ 
    if (mode) 
    { 
     double aa = [self.sines1.text doubleValue]; 
     double ab = [self.sines2.text doubleValue]; 
     double ac = 180 - aa - ab; 
     double sa = [self.sines3.text doubleValue]; 
     double sb; 
     double sc; 

     //convert degrees to radians 
     aa = (aa * (M_PI/180)); 
     ab = (ab * (M_PI/180)); 
     ac = (ac * (M_PI/180)); 

     sb = (sa/sin(aa))*sin(ab); 
     sc = (sa/sin(aa))*sin(ac); 

     self.angleA.text = [NSString stringWithFormat: @"%.2lf", aa]; 
     self.angleB.text = [NSString stringWithFormat: @"%.2lf", ab]; 
     self.angleC.text = [NSString stringWithFormat: @"%.2lf", ac]; 
     self.sideA.text = [NSString stringWithFormat: @"%.2lf", sa]; 
     self.sideB.text = [NSString stringWithFormat: @"%.2lf", sb]; 
     self.sideC.text = [NSString stringWithFormat: @"%.2lf", sc]; 
    } 

    if (!mode) 
    { 
     double aa = [self.sines1.text doubleValue]; 
     double ab; 
     double ac; 
     double sa = [self.sines2.text doubleValue]; 
     double sb = [self.sines3.text doubleValue]; 
     double sc; 

     aa = (aa * (M_PI/180)); 

     ab = asin(sb*(sin(aa)/sa)); 
     ac = 180 - aa - ab; 

     ac = (ac * (M_PI/180)); 

     sc = (sa/sin(aa))*sin(ac); 

     self.angleA.text = [NSString stringWithFormat: @"%.2lf", aa]; 
     self.angleB.text = [NSString stringWithFormat: @"%.2lf", ab]; 
     self.angleC.text = [NSString stringWithFormat: @"%.2lf", ac]; 
     self.sideA.text = [NSString stringWithFormat: @"%.2lf", sa]; 
     self.sideB.text = [NSString stringWithFormat: @"%.2lf", sb]; 
     self.sideC.text = [NSString stringWithFormat: @"%.2lf", sc]; 
    } 
} 

- (IBAction)aassas:(id)sender 
{ 
    switch (self.segControl.selectedSegmentIndex) { 
     case 0: 
      self.sine1.text = @"Angle A/n"; 
      self.sine2.text = @"Angle B/n"; 
      self.sine3.text = @"Side A/n"; 
      mode = NO; 
      break; 

     case 1: 
      self.sine1.text = @"Angle A/n"; 
      self.sine2.text = @"Side A/n"; 
      self.sine3.text = @"Side B/n"; 
      mode = YES; 
      break; 

     default: 
      break; 
    } 
} 
@end

來源

2012-04-26 TPLeavitt

什麼代碼hv你寫在firstViewController？請張貼它。 – 2012-04-26 14:19:19

非Xcode問題 – Almo 2012-04-26 14:27:47

通常的原因這個錯誤是，在廈門國際銀行文件的地方或故事情節，你有一些鏈接控制或查看稱爲「解決」的IBOutlet，但您不再擁有鏈接指向的類的代碼中定義的屬性或變量。

來源

2012-04-26 16:15:41

哪裏是xib文件，故事板中的所有鏈接都很好。 – TPLeavitt 2012-04-26 16:29:53

如果你有一個故事板，你可能沒有xib文件。你有沒有在這個項目中有過「解決」的東西？（因爲應用程序認爲你已經做了，並且在某個地方仍然有引用。） – 2012-04-26 16:35:34

是的，我將它們重命名爲不同的名稱，並重復了故事板中的鏈接 – TPLeavitt 2012-04-26 16:50:24

-1

的UIViewController符合的NSKeyValueCoding協議，因此設置undeined鍵的值，當你沒有覆蓋

- (void)setValue:(id)value forUndefinedKey:(NSString *)key;

它會出現一個NSUndefinedKeyException例外..

[self setTriText1:nil]; 
[self setTriText2:nil]; 
[self setLegA:nil]; 
[self setLegB:nil]; 
[self setHypotenuse:nil]; 
[self setAngleA:nil]; 
[self setAngleB:nil]; 
[self setButton1:nil];

可以在這裏可以帶來這種例外。你爲什麼不寫這樣的：

self.triText1 = nil; 
self.triText2 = nil; 
self.legA = nil;

以及用於sencondViewContrlloer，如果使用「設置法」明確寫錯誤的方法，類似的異常將會發生..

來源

2012-04-26 16:38:23 ianwang

沒有理由重寫'setValue：forUndefinedKey：'，並且點語法和消息語法完全相同（發送'setWhatever：'消息）。 – 2012-04-26 16:57:47

我知道了，我只是推薦一個簡單的使用方法，防止寫錯方法，你的投票是有點不被動的.. – ianwang 2012-04-27 16:28:19

我認爲你可以得到詳細信息在Xcode調試器或gdb中，調用堆棧是非常重要的信息。我做到了，發現tableviewcell的標識符是錯誤的結果。

來源

2012-11-16 06:46:58 Itachi

objective-c選項卡式應用程序，線程1信號：SIGABRT

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