Ios 试图设置textfield的委托时崩溃

Ios 试图设置textfield的委托时崩溃,ios,objective-c,Ios,Objective C,我有很多文本字段,我试图让它们在使用返回键时关闭。为了使其工作,您需要将每个textfield的委托设置为self,如下所示[textfield setDelegate:self]。我在我的项目中有50多个文本字段,为了让它们都消失,我必须为每个文本字段复制这行代码。在下面的例子中,我使用了for循环来缩小这个范围,但是我的项目崩溃了,在我尝试时出现了这个错误。有人能告诉我我做错了什么,我怎样才能解决这个问题吗 //.h @interface InsertScheduleCGPS :

我有很多文本字段,我试图让它们在使用返回键时关闭。为了使其工作,您需要将每个textfield的委托设置为self,如下所示
[textfield setDelegate:self]。我在我的项目中有50多个文本字段,为了让它们都消失,我必须为每个文本字段复制这行代码。在下面的例子中,我使用了for循环来缩小这个范围,但是我的项目崩溃了,在我尝试时出现了这个错误。有人能告诉我我做错了什么,我怎样才能解决这个问题吗

 //.h 
    @interface InsertScheduleCGPS : UIViewController <UITextFieldDelegate>{
        NSArray *Dayh;
        IBOutlet UITextField *Day11;
    }
    @property(nonatomic, assign) id<UITextFieldDelegate> delegate;
    @property (nonatomic,strong) NSArray *Dayh;
你可能是说

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。

我看不到您将委托分配给文本字段的位置。您有一个由一个字符串(“Day11”)组成的数组,然后尝试将委托分配给该字符串。这是导致异常的原因。我正在尝试使它与这行代码相等
[Day11 setDelegate:self]。我想做的是不可能的吗?非常感谢!我刚刚花了两个小时想弄明白。
    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) 
Dayh = [NSArray arrayWithObjects:Day11, nil];