我有很多文本字段,而我试图让它们做的就是在使用返回键时解除。为了使其工作,您需要将每个文本字段的委托设置为self,例如[textfield setDelegate: self];
。我的项目中有超过50个文本字段,为了使它们全部消失,我必须为每个文本字段复制该行代码。在下面的示例中,我使用for循环尝试将其缩小,但是当我尝试时,我的项目崩溃并且给了我这个错误。有人能告诉我我做错了什么以及如何解决这个问题?
//.h
@interface InsertScheduleCGPS : UIViewController <UITextFieldDelegate>{
NSArray *Dayh;
IBOutlet UITextField *Day11;
}
@property(nonatomic, assign) id<UITextFieldDelegate> delegate;
@property (nonatomic,strong) NSArray *Dayh;
//.m
- (void)viewDidLoad
{
[super viewDidLoad];
Dayh = [NSArray arrayWithObjects:@"Day11", nil];
NSLog(@"euf");
for(int i=0; i<[self.Dayh count]; i++) {
NSLog(@"dd%@",[self.Dayh objectAtIndex:i]);
[[self.Dayh objectAtIndex:i] setDelegate: self];
}
- (BOOL)textFieldShouldReturn:(UITextField *)Day11 {
[[self view] endEditing:YES];
return NO;
}
ERROR:
2014-01-18 19:15:26.712 Swepple[64912:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFConstantString setDelegate:]: unrecognized selector sent to instance 0x144ec'
*** First throw call stack:
(
0 CoreFoundation 0x0183b5e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x015be8b6 objc_exception_throw + 44
2 CoreFoundation 0x018d8903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
3 CoreFoundation 0x0182b90b ___forwarding___ + 1019
4 CoreFoundation 0x0182b4ee _CF_forwarding_prep_0 + 14
5 Swepple 0x0000bbd6 -[InsertScheduleCGPS viewDidLoad] + 4262
6 UIKit 0x00440318 -[UIViewController loadViewIfRequired] + 696
7 UIKit 0x004405b4 -[UIViewController view] + 35
8 UIKit 0x0044f361 -[UIViewController viewControllerForRotation] + 63
9 UIKit 0x00446f00 -[UIViewController _visibleView] + 84
10 UIKit 0x006d511a -[UIWindowController transition:fromViewController:toViewController:target:didEndSelector:animation:] + 5199
11 UIKit 0x0044c0fc -[UIViewController presentViewController:withTransition:completion:] + 6433
12 UIKit 0x0044c61f -[UIViewController presentViewController:animated:completion:] + 130
13 UIKit 0x0044c65f -[UIViewController presentModalViewController:animated:] + 56
14 UIKit 0x00870e16 -[UIStoryboardModalSegue perform] + 271
15 UIKit 0x0086107e -[UIStoryboardSegueTemplate _perform:] + 174
16 UIKit 0x00442280 -[UIViewController performSegueWithIdentifier:sender:] + 72
17 Swepple 0x000052d4 -[SecondViewController insert:] + 244
18 libobjc.A.dylib 0x015d0874 -[NSObject performSelector:withObject:withObject:] + 77
19 UIKit 0x0032e0c2 -[UIApplication sendAction:to:from:forEvent:] + 108
20 UIKit 0x0032e04e -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
21 UIKit 0x004260c1 -[UIControl sendAction:to:forEvent:] + 66
22 UIKit 0x00426484 -[UIControl _sendActionsForEvents:withEvent:] + 577
23 UIKit 0x00425733 -[UIControl touchesEnded:withEvent:] + 641
24 UIKit 0x0036b51d -[UIWindow _sendTouchesForEvent:] + 852
25 UIKit 0x0036c184 -[UIWindow sendEvent:] + 1232
26 UIKit 0x0033fe86 -[UIApplication sendEvent:] + 242
27 UIKit 0x0032a18f _UIApplicationHandleEventQueue + 11421
28 CoreFoundation 0x017c483f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
29 CoreFoundation 0x017c41cb __CFRunLoopDoSources0 + 235
30 CoreFoundation 0x017e129e __CFRunLoopRun + 910
31 CoreFoundation 0x017e0ac3 CFRunLoopRunSpecific + 467
32 CoreFoundation 0x017e08db CFRunLoopRunInMode + 123
33 GraphicsServices 0x037e09e2 GSEventRunModal + 192
34 GraphicsServices 0x037e0809 GSEventRun + 104
35 UIKit 0x0032cd3b UIApplicationMain + 1225
36 Swepple 0x0000e04d main + 141
37 libdyld.dylib 0x01d7c70d start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
答案 0 :(得分:2)
你可能意味着
Dayh = [NSArray arrayWithObjects:Day11, nil];
目前,Dayh
是一个包含字符串“Day11”的数组,而不是文本字段。