目标C,线程1程序接收信号SIGABRT

我正在尝试使用Interface Builder编译和运行Objective C应用程序的简单教程。 我正在使用Xcode 4.0.2并在iOS(iPhone)4.3上进行模拟

http://www.switchonthecode.com/tutorials/creating-your-first-iphone-application-with-interface-builder

当我构建项目时,它构建正常但是一旦应用程序尝试运行它崩溃:

int main(int argc, char *argv[]) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, @"SimpleUIAppDelegate"); [pool release]; return retVal; } 

我在第4行得到错误:int retVal = UI …线程1:程序接收信号“SIGABRT”。

如果为了清楚起见需要发布该项目的其他文件,我可以这样做。

谢谢!

编辑:

SimpleUIViewController.h:

 #import  @interface SimpleUIViewController : UIViewController  { UITextField *textInput; UILabel *label; NSString *name; } @property (nonatomic, retain) IBOutlet UITextField *textInput; @property (nonatomic, retain) IBOutlet UILabel *label; @property (nonatomic, copy) NSString *name; - (IBAction)changeGreeting:(id)sender; @end 

SimpleUIViewController.m:

 #import "SimpleUIViewController.h" @implementation SimpleUIViewController @synthesize textInput; @synthesize label; @synthesize name; - (IBAction)changeGreeting:(id)sender { self.name = textInput.text; NSString *nameString = name; if([nameString length] == 0) { nameString = @"Inigo Montoya"; } NSString *greeting = [[NSString alloc] initWithFormat:@"Hello, my name is %@!", nameString]; label.text = greeting; [greeting release]; } - (BOOL)textFieldShouldReturn:(UITextField *)theTextField { if(theTextField == textInput) { [textInput resignFirstResponder]; } return YES; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Release anything that's not essential, such as cached data } - (void)dealloc { [textInput release]; [label release]; [name release]; [super dealloc]; } @end 

错误信息:

 This GDB was configured as "x86_64-apple-darwin".Attaching to process 2668. 2011-06-09 11:20:21.662 InterfaceBuilder[2668:207] Unknown class InterfaceBuilderAppDelegate_iPhone in Interface Builder file. 2011-06-09 11:20:21.666 InterfaceBuilder[2668:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key textInput.' *** Call stack at first throw: ( 0 CoreFoundation 0x00dc25a9 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x00f16313 objc_exception_throw + 44 2 CoreFoundation 0x00dc24e1 -[NSException raise] + 17 3 Foundation 0x00794677 _NSSetUsingKeyValueSetter + 135 4 Foundation 0x007945e5 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 285 5 UIKit 0x0021030c -[UIRuntimeOutletConnection connect] + 112 6 CoreFoundation 0x00d388cf -[NSArray makeObjectsPerformSelector:] + 239 7 UIKit 0x0020ed23 -[UINib instantiateWithOwner:options:] + 1041 8 UIKit 0x00210ab7 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 168 9 UIKit 0x0001617a -[UIApplication _loadMainNibFile] + 172 10 UIKit 0x00016cf4 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 291 11 UIKit 0x00021617 -[UIApplication handleEvent:withNewEvent:] + 1533 12 UIKit 0x00019abf -[UIApplication sendEvent:] + 71 13 UIKit 0x0001ef2e _UIApplicationHandleEvent + 7576 14 GraphicsServices 0x00ffb992 PurpleEventCallback + 1550 15 CoreFoundation 0x00da3944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52 16 CoreFoundation 0x00d03cf7 __CFRunLoopDoSource1 + 215 17 CoreFoundation 0x00d00f83 __CFRunLoopRun + 979 18 CoreFoundation 0x00d00840 CFRunLoopRunSpecific + 208 19 CoreFoundation 0x00d00761 CFRunLoopRunInMode + 97 20 UIKit 0x000167d2 -[UIApplication _run] + 623 21 UIKit 0x00022c93 UIApplicationMain + 1160 22 InterfaceBuilder 0x000027ff main + 127 23 InterfaceBuilder 0x00002775 start + 53 24 ??? 0x00000001 0x0 + 1 ) terminate called after throwing an instance of 'NSException' sharedlibrary apply-load-rules all Current language: auto; currently objective-c (gdb) 

我是obj-c的新手,并且完全不知道我正在查看有关该错误消息的内容。 有帮助吗?

您的NIB / XIB文件中有错误。

看起来您之前已经附加了IBOutlet(textInput),现在连接已断开。 您应该仔细检查Interface Builder中的所有连接。

您可能已经错误地将“文件所有者”的类型设置为SimpleUIViewController的xib中的UIViewController。 请在身份检查器窗格中将其设置为SimpleUIViewController。

现在我明白了! 你的崩溃报告说:

 Unknown class InterfaceBuilderAppDelegate_iPhone 

因此,您似乎将IB中的App Delegate设置为此类,但此类在您的项目中不可用。 检查一下。 您拼错了类名,或者您应该将相关的类添加到项目中。

很可能,您的文本字段已连接到此应用代理。

您是否已将Interface Builder中的文本字段连接到SimpleUIViewControllersockets?

从教程看来你没有使用MainWindow.xib,我会说你的项目缺少运行正确的委托。 尝试在主要内容中进行此更改:

int retVal = UIApplicationMain(argc,argv,nil,@“SimpleUIAppDelegate”);

如果我的假设是对的,那就应该让你前进。

要修复它,请在Interface Builder中加载XIB,选择File Inspector选项卡,然后取消选中Use autolayout。 或者,如果您必须具有自动布局,则可以定位iOS 6.0 + – 仅设备并更改最小目标。

iPad上的NSLayoutConstraint SIGABRT

线程1程序recived singal sigabrt

有时NSString值是nill!

它可能会导致您的应用程序初始化!