Question

这是我从已经可以处理父窗口和工作表的应用程序中获取的摘要。这里的摘要编译，启动和显示父窗口，而没有收到我发送到其文本字段的消息。该运行为文本字段，按钮和窗口本身生成“缺少setter或实例变量”日志消息。由于某种原因，我没有得到正确初始化的父窗口，我怀疑我将在工作表窗口中遇到同样的问题，但我无法通过此问题来调试应用程序的其余部分。

我相信在将窗口连接到文件所有者的过程中省略了一些基本的东西，即使在查看.xib的连接检查器时它显示自定义类是ParentClass和各种连接制作完成。我在Apple的迷宫文档中没有找到任何说明，也没有在StackOverflow中找到指导我完成连接过程，这将允许我发现我缺少的部分。

你会提供任何你能提供的东西。

ParentDelegate.h

#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>
@class ParentClass;
@interface ParentDelegate : NSObject <NSApplicationDelegate>
@property (assign) IBOutlet NSWindow    * window;
@property (weak, nonatomic) ParentClass * parentController;
@end

ParentDelegate.m

#import "ParentDelegate.h"
@implementation ParentDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification  {  }
- (void)applicationDidBecomeActive:(NSNotification *)aNotification  {  }
- (void)applicationDidResignActive:(NSNotification *)aNotification  {  }
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication
    { return YES; }
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
    { return NSTerminateNow; }
@end

ParentClass.h

#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>
@interface ParentClass : NSWindowController {
}
@property (assign) IBOutlet NSWindow        * window;
@property          IBOutlet NSTextField     * messageTextField;
@property          IBOutlet NSButton        * proceedButton;
@property (strong)          NSMutableString * parentPropInfo;
- (IBAction) awakeFromNib;
- (IBAction) doProceed:(id)sender;
@end

ParentClass.m

#import "ParentClass.h"
#import "ParentDelegate.h"
#import "SheetClass.h"
@implementation ParentClass
ParentDelegate * parentDelegate;
SheetClass     * sheetController;
- (IBAction)awakeFromNib  {
    parentDelegate = [NSApplication sharedApplication].delegate;
    parentDelegate.parentController = self;
    sheetController = [[SheetClass alloc] initWithWindowNibName: @"SheetClass"];
    _messageTextField.stringValue = @"Click Proceed button";
}
- (IBAction)doProceed:(id)sender  {
    _parentPropInfo = @"Hello!".mutableCopy;
    [NSApp runModalForWindow:sheetController.window];
    // Sheet active now until it issues endModal, then:
    _messageTextField.stringValue = sheetController.sheetPropInfo;
    [NSApp endSheet: sheetController.window];
    [sheetController.window orderOut:self];
}
@end

SheetClass.h

#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>
@interface SheetClass : NSWindowController {
}
@property (assign) IBOutlet NSWindow        * window;
@property (weak)   IBOutlet NSTextField     * propTextField;
@property (weak)   IBOutlet NSButton        * returnButton;
@property (strong)          NSMutableString * sheetPropInfo;
- (IBAction)awakeFromNib;
- (IBAction)doReturn:(id)sender;
@end

SheetClass.m

#import "SheetClass.h"
#import "ParentClass.h"
@implementation SheetClass
ParentClass * parent;
- (IBAction)awakeFromNib  {
     parent.window = self.window.sheetParent;
    _propTextField.stringValue = parent.parentPropInfo;
}
- (IBAction)doReturn:(id)sender  {
    _sheetPropInfo = @"Done!".mutableCopy;
    [NSApp stopModal];
}
@end

最终我想将这个迷你应用程序用作其他几个应用程序的起始模板。

“缺少setter或实例变量”日志消息在Xcode中使用Objective-C初始化NSWindowController：

0 个答案: