macos - 可可：我应该使用哪种方法来初始化属性而不是 awakeFromNib

Question

TableData 是 NSObject 的子类，作为基于视图的表的数据源和表委托。TableData的awakeFromNib方法会运行很多次，因为我使用的是基于视图的表。如果 TableData 是 NSViewController 的子类，我可以loadView:用来完成我的任务，但 TableData 是 NSObject 的子类，我的问题是：

1. 我应该使用哪种方法而不是awakeFromNib初始化 TableData 属性？

Answer 1

我不知道你如何创建你的窗口，但你可以这样做：

AppDelegate.m

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    // Insert code here to initialize your application

    fMainWinDelegate = nil;
    fMainWinDelegate = [[MainWinDelegate alloc] init];
    [fMainWinDelegate showWindow];
}

MainWindowDelegate.m

- (id)initWithWindow:(NSWindow *)AWindow
{
    NSLog(@"MainWinDelegate::initWithWindow");
    self = [super initWithWindow:AWindow];
    if (self) {
        // Initialization code here.
        NSLog(@"MainWinDelegate::initWithWindow, we have self!");
    }

    return self;
}

- (void)awakeFromNib 
{
    NSLog(@"MainWinDelegate::awakeFromNib");
    // only for debug and to be sure that is called many times
}

- (void)showWindow {
    NSLog(@"MainWinDelegate::showWindow");

    if (!self.window) {
        [NSBundle loadNibNamed:@"MainWin" owner:self];

        NSLog(@"MainWinDelegate::showWindow init part");
        // do your init here
    }

    [self.window makeKeyAndOrderFront:self];

    NSLog(@"MainWinDelegate::showWindow end");
}

这是日志：

MainWinDelegate::initWithWindow
MainWinDelegate::initWithWindow, we have self!
MainWinDelegate::showWindow
MainWinDelegate::awakeFromNib
MainWinDelegate::showWindow init part
MainWinDelegate::showWindow end

Answer 2

您可以选择：

@interface MONTableData : NSObject

// a designated initializer:
- (id)init;
- (id)initWithCoder:(NSCoder *)pCoder;

// or when the `TableData`'s input data source is set:
- (void)setPhotoAlbum:(MONPhotoAlbum *)pPhotoAlbum;

@end