我不明白为什么我不能在我的文件中放置任何标签或按钮。每次我这样做，它就崩溃了，并出现线程1错误。
@interface PuzzleView : UIView
@property (nonatomic, assign) int row;
@property (nonatomic, assign) int col;
@property (nonatomic, assign) CGFloat dw;
@property (nonatomic, assign) CGFloat dh;
-(NSMutableArray *) getNeighborsForPoint:(CGPoint) point inArray:(NSMutableArray *)array;
-(void) uncover:(CGPoint) point;
@property (retain, nonatomic) IBOutlet UITextField *unflaggedshow;
- (IBAction)swipe:(UISwipeGestureRecognizer *)recognizer;
@end
实现文件
@implementation PuzzleView
@synthesize unflaggedshow=_unflaggedshow;
- (void)drawRect:(CGRect)rect
{
_unflaggedshow.text=[[NSString alloc]initWithFormat:@"%0.0d",unflaggedmine1];
}
- (void)dealloc {
[_unflaggedshow release];
[super dealloc];
}
@end
在drawRect中有很多代码，我只把主要的东西放在这里。有人能告诉我为什么我得到线程1信号SIGBART错误。
感谢错误如下:
#import <UIKit/UIKit.h>
#import "TabBarAppDelegate.h"
int main(int argc, char *argv[])
{
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([TabBarAppDelegate class]));
}
}
错误:
2014-03-17 06:44:24.836 TabBar-DoubleTap[4603:70b] application:didFinishLaunchingWithOptions
2014-03-17 06:44:24.839 TabBar-DoubleTap[4603:70b] FirstViewController/viewDidLoad
2014-03-17 06:44:24.841 TabBar-DoubleTap[4603:70b] Application windows are expected to have a root view controller at the end of application launch
2014-03-17 06:44:24.844 TabBar-DoubleTap[4603:70b] -----------total mines: 0 ------------
2014-03-17 06:44:24.844 TabBar-DoubleTap[4603:70b] value of gridvalrow from puzzle 12
2014-03-17 06:44:24.844 TabBar-DoubleTap[4603:70b] value of gridvalcol from puzzle 18
2014-03-17 06:44:24.845 TabBar-DoubleTap[4603:70b] field being set ***********
2014-03-17 06:44:24.845 TabBar-DoubleTap[4603:70b] total fields set 400 ******
2014-03-17 06:44:24.846 TabBar-DoubleTap[4603:70b] mine desnity********** 72
2014-03-17 06:44:24.847 TabBar-DoubleTap[4603:70b] ------------------------------------Unflagged Mines 21827753
2014-03-17 06:44:24.847 TabBar-DoubleTap[4603:70b] PuzzleView/drawRect()
2014-03-17 06:44:25.911 TabBar-DoubleTap[4603:70b] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<PuzzleView 0x8b44840> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key unflagged.'
*** First throw call stack:
(
0 CoreFoundation 0x01bb65e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x014c98b6 objc_exception_throw + 44
2 CoreFoundation 0x01c466a1 -[NSException raise] + 17
3 Foundation 0x000ff9ee -[NSObject(NSKeyValueCoding) setValue:forUndefinedKey:] + 282
4 Foundation 0x0006bcfb _NSSetUsingKeyValueSetter + 88
5 Foundation 0x0006b253 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 267
6 UIKit 0x004b9e0b -[UIView(CALayerDelegate) setValue:forKey:] + 168
7 Foundation 0x000cd70a -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 412
8 UIKit 0x006f1a15 -[UIRuntimeOutletConnection connect] + 106
9 libobjc.A.dylib 0x014db7d2 -[NSObject performSelector:] + 62
10 CoreFoundation 0x01bb1b6a -[NSArray makeObjectsPerformSelector:] + 314
11 UIKit 0x006f056e -[UINib instantiateWithOwner:options:] + 1417
12 UIKit 0x00562605 -[UIViewController _loadViewFromNibNamed:bundle:] + 280
13 UIKit 0x00562dad -[UIViewController loadView] + 302
14 UIKit 0x005630ae -[UIViewController loadViewIfRequired] + 78
15 UIKit 0x005635b4 -[UIViewController view] + 35
16 UIKit 0x0059a3ae -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 407
17 UIKit 0x00599bd2 -[UITabBarController transitionFromViewController:toViewController:] + 63
18 UIKit 0x00595fbb -[UITabBarController _setSelectedViewController:] + 279
19 UIKit 0x00595e9c -[UITabBarController setSelectedViewController:] + 180
20 UIKit 0x00599ace -[UITabBarController _tabBarItemClicked:] + 312
21 libobjc.A.dylib 0x014db874 -[NSObject performSelector:withObject:withObject:] + 77
22 UIKit 0x004510c2 -[UIApplication sendAction:to:from:forEvent:] + 108
23 UIKit 0x0045104e -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
24 UIKit 0x006ff659 -[UITabBar _sendAction:withEvent:] + 479
25 libobjc.A.dylib 0x014db81f -[NSObject performSelector:withObject:] + 70
26 UIKit 0x004510c2 -[UIApplication sendAction:to:from:forEvent:] + 108
27 UIKit 0x0045104e -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
28 UIKit 0x005490c1 -[UIControl sendAction:to:forEvent:] + 66
29 UIKit 0x00549484 -[UIControl _sendActionsForEvents:withEvent:] + 577
30 UIKit 0x005490f6 -[UIControl sendActionsForControlEvents:] + 48
31 UIKit 0x00703f80 -[UITabBar(Static) _buttonUp:] + 123
32 libobjc.A.dylib 0x014db874 -[NSObject performSelector:withObject:withObject:] + 77
33 UIKit 0x004510c2 -[UIApplication sendAction:to:from:forEvent:] + 108
34 UIKit 0x0045104e -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
35 UIKit 0x005490c1 -[UIControl sendAction:to:forEvent:] + 66
36 UIKit 0x00549484 -[UIControl _sendActionsForEvents:withEvent:] + 577
37 UIKit 0x00548733 -[UIControl touchesEnded:withEvent:] + 641
38 UIKit 0x0048e51d -[UIWindow _sendTouchesForEvent:] + 852
39 UIKit 0x0048f184 -[UIWindow sendEvent:] + 1232
40 UIKit 0x00462e86 -[UIApplication sendEvent:] + 242
41 UIKit 0x0044d18f _UIApplicationHandleEventQueue + 11421
42 CoreFoundation 0x01b3f83f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
43 CoreFoundation 0x01b3f1cb __CFRunLoopDoSources0 + 235
44 CoreFoundation 0x01b5c29e __CFRunLoopRun + 910
45 CoreFoundation 0x01b5bac3 CFRunLoopRunSpecific + 467
46 CoreFoundation 0x01b5b8db CFRunLoopRunInMode + 123
47 GraphicsServices 0x02a4c9e2 GSEventRunModal + 192
48 GraphicsServices 0x02a4c809 GSEventRun + 104
49 UIKit 0x0044fd3b UIApplicationMain + 1225
50 TabBar-DoubleTap 0x00002992 main + 130
51 TabBar-DoubleTap 0x00002905 start + 53
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
我想我把它修好了。我试图同时使用标签和按钮。我删除了标签，现在它工作得很好
看起来您曾经有一个称为unflagged的出口，但现在已经不存在了。你可能把名字改成了unflaggedshow ?
您需要删除到不存在的出口的连接(并将其连接到存在的东西)
当drawRect被调用时，outlets尚未配置。所以你不能使用drawRect来更新UI。
可以使用-(void)didMoveToSuperview方法来定制UI，而不是drawRect。然而，除了特殊情况，最好自定义UIView子视图，当它从父视图控制器初始化，你有所有你需要的，更重要的是，它是一个同步调用。