多次调用awakeFromNib 方法 [英] awakeFromNib method called multiple times

问题描述

在我基于 NSPersistenDocument 的项目中，我有一个这样的结构

In my NSPersistenDocument based project i have a structure like this

myDocument (NSPersistentDocument) -> myDocument.xib (windows xib)
                                           |
                                           |-> view (the self.view) --> ... "other view"
                                           |
                                           |-> some NSArrayController 
                                           |
                                           |-> myResourceViewController --> myResourceViewController.xib
                                                                                          |
                                                                                          |-> view (the self.view)
                                                                                          |
                                                                                          |-> myTreeController (a NSTreeController subclass)

基本上，myResourceViewController 是一个viewController 的实例，它管理resourceView 并管理它们的数据.

basically, myResourceViewController is an instance of a viewController who manage resourceView and manage their data.

在myDocument的awakeFromNib方法中，我有以下代码

in awakeFromNib method of myDocument i have the following code

- (void)windowControllerDidLoadNib:(NSWindowController *)aController
{
    ...
    [leftBar addSubview:resourceViewController.view]; //i add resourceViewController's view 
    resourceViewController.view.frame = leftBar.bounds;
    ...
}

在 myResourceViewControllerawakeFromNib 方法中，我有:

in myResourceViewController awakeFromNib methods i have:

-(void)awakeFromNib;
{
    NSLog(@"%@", [self description]);

    [removeButton bind:@"enabled" toObject:resourceTreeController withKeyPath:@"selection" options:[NSDictionary dictionaryWithObject:NSIsNotNilTransformerName forKey:NSValueTransformerNameBindingOption]];

    NSArray *draggedTypes = [NSArray arrayWithObjects:ResourceURIPasteBoardType, nil];
    [resourceOutlineView registerForDraggedTypes:draggedTypes];
}

NSLog 说，myResourceViewController 的同一个实例的awakeFromNib 被调用了4 次，我不明白为什么.我唯一的 ResourceViewController 是在 myDocument xib 中创建的.我不会到处使用 NSNib 加载方法.

the NSLog say that awakeFromNib, of the same instance of myResourceViewController, is called 4 time, i don't understand why. My only ResourceViewController is created in myDocument xib. I don't use NSNib loading methods everywhere.

推荐答案

我找到了解决方案.每次 NSOutlineView 创建 NSTableCellView 时都会调用 awakeFromNib.

I found the solution. awakeFromNib is called every time a NSTableCellView is created by NSOutlineView.

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