我想知道如何在 XCode 中为 MovieEditorViewController 头文件添加 @synthesize 语句
实现文件如下所示：
#import "MovieViewController.h"
#import "Movie.h"
#import "MovieEditorViewController.h"
@implementation MovieViewController
@synthesize titleLabel;
@synthesize boxOfficeGrossLabel;
@synthesize summaryLabel;
@synthesize movie;
但我认为我的问题不是为 MovieEditorViewController 头文件添加 @synthesize 语句。如果不是这个，那么我已经在下面包含了调试日志。
我对编程真的很陌生，我似乎真的不知道出了什么问题。当我运行 iOS 模拟器并单击按钮显示可编辑文本字段时，程序终止并返回主屏幕。调试器显示如下：
[会议开始于2011-06-04 13:00:00 +0100.]2011-06-04 13:00:05.568 电影[6678:207] -[MovieViewController编辑视图控制器]：无法识别 选择器发送到实例 0x8a3bd10 2011-06-04 13:00:05.572 电影[6678:207] * 终止应用程序 由于未捕获的异常 'NSInvalidArgumentException'，原因： '-[MovieViewController editViewController]：无法识别 选择器发送到实例 0x8a3bd10' * 第一次抛出时调用堆栈：( 0 CoreFoundation
0x00dc95a9 异常预处理 + 185 1 libobjc.A.dylib
0x00f1d313 objc_异常_抛出 + 44 2 核心基础
0x00dcb0bb -[NSObject(NSObject) 不识别选择器：] + 187 3
核心基础
0x00d3a966 __转发 + 966 4
核心基础
0x00d3a522 _CF_forwarding_prep_0 + 50 5 电影
0x000021b4 -[MovieViewController 编辑] + 62 6 UIKit 0x002b94fd -[UIApplication 发送操作:至:来自:forEvent:] + 119 7 UIKit
0x00349799-[UI控制 sendAction:to:forEvent:] + 67 8
UIKit
0x0034bc2b -[UIControl（内部） _sendActionsForEvents:withEvent:] + 527 9 UIKit
0x0034a7d8-[UI控制 触摸结束：withEvent：] + 458 10 UIKit
0x002ddded-[UIWindow _sendTouchesForEvent:] + 567 11 UIKit
0x002bec37 -[UIApplication 发送事件：] + 447 12 UIKit 0x002c3f2e _UIApplicationHandleEvent + 7576 13 图形服务
0x01721992 紫色事件回调 + 1550 14 核心基础
0x00daa944 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 52 15 核心基础 0x00d0acf7 __CFRunLoopDoSource1 + 215 16 核心基础
0x00d07f83 __CFRunLoopRun + 979 17 核心基础
0x00d07840 CFRunLoopRunSpecific + 208 18 核心基础
0x00d07761 CFRunLoopRunIn模式 + 97 19 图形服务
0x017201c4 GSEventRunModal + 217 20 图形服务
0x01720289 GSEventRun + 115 21 UIKit 0x002c7c93 UIApplicationMain + 1160 22 电影
0x00001b40 主 + 102 23 电影
0x00001ad1 开始 + 53 24 ???
0x00000001 0x0 + 1 ) 终止调用 抛出一个实例后 'NSException'
如果有人能指出我正确的方向，我将非常感激......
谢谢！
The implementation file looks like this:
#import "MovieViewController.h"
#import "Movie.h"
#import "MovieEditorViewController.h"
@implementation MovieViewController
@synthesize titleLabel;
@synthesize boxOfficeGrossLabel;
@synthesize summaryLabel;
@synthesize movie;
but i'm thinking my problem is not adding @synthesize statements for the MovieEditorViewController header file. If it's not this then I've included the debugging log below.
I'm really new to programming and I really can't seem to figure out whats going wrong. When I run the iOS simulator and click the button to display editable text fields the program terminates and goes back to the homescreen. The debugger shows as follows:
[Session started at 2011-06-04
13:00:00 +0100.] 2011-06-04
13:00:05.568 Movie[6678:207]
-[MovieViewController editingViewController]: unrecognized
selector sent to instance 0x8a3bd10
2011-06-04 13:00:05.572
Movie[6678:207] * Terminating app
due to uncaught exception
'NSInvalidArgumentException', reason:
'-[MovieViewController
editingViewController]: unrecognized
selector sent to instance 0x8a3bd10'
* Call stack at first throw: ( 0 CoreFoundation
0x00dc95a9 exceptionPreprocess + 185
1 libobjc.A.dylib
0x00f1d313 objc_exception_throw + 44
2 CoreFoundation
0x00dcb0bb -[NSObject(NSObject)
doesNotRecognizeSelector:] + 187 3
CoreFoundation
0x00d3a966 __forwarding + 966 4
CoreFoundation
0x00d3a522 _CF_forwarding_prep_0 + 50
5 Movie
0x000021b4 -[MovieViewController edit]
+ 62 6 UIKit 0x002b94fd -[UIApplication
sendAction:to:from:forEvent:] + 119 7
UIKit
0x00349799 -[UIControl
sendAction:to:forEvent:] + 67 8
UIKit
0x0034bc2b -[UIControl(Internal)
_sendActionsForEvents:withEvent:] + 527 9 UIKit
0x0034a7d8 -[UIControl
touchesEnded:withEvent:] + 458 10
UIKit
0x002ddded -[UIWindow
_sendTouchesForEvent:] + 567 11 UIKit
0x002bec37 -[UIApplication sendEvent:]
+ 447 12 UIKit 0x002c3f2e _UIApplicationHandleEvent +
7576 13 GraphicsServices
0x01721992 PurpleEventCallback + 1550
14 CoreFoundation
0x00daa944
CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION
+ 52 15 CoreFoundation 0x00d0acf7 __CFRunLoopDoSource1 + 215
16 CoreFoundation
0x00d07f83 __CFRunLoopRun + 979 17
CoreFoundation
0x00d07840 CFRunLoopRunSpecific + 208
18 CoreFoundation
0x00d07761 CFRunLoopRunInMode + 97 19
GraphicsServices
0x017201c4 GSEventRunModal + 217 20
GraphicsServices
0x01720289 GSEventRun + 115 21 UIKit
0x002c7c93 UIApplicationMain + 1160
22 Movie
0x00001b40 main + 102 23 Movie
0x00001ad1 start + 53 24 ???
0x00000001 0x0 + 1 ) terminate called
after throwing an instance of
'NSException'
If anyone could point me in the right direction i'd be very grateful...
Thanks!
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看来您正处于 iPhone SDK 开发书。您已经完成第 4.8 节了吗？该错误表明您的
MovieViewController没有名为editingViewController的属性，这是您在 4.8 中添加的属性。在您完成第 4.9 节之前，该项目不会构建并运行，您可以在第 4.9 节中建立一些联系。Looks like you're in the iPhone SDK Development book. Have you made it to section 4.8 yet? The error says that your
MovieViewControllerdoesn't have a property namededitingViewController, which is something you add in 4.8. The project won't build and run until you get through section 4.9, which is where you make some connections.