ios - viewDidLoad 上的 View 导出为零

Question

我的文件所有者有 3 个网点，它们在 viewDidLoad 上都为零...

__weak IBOutlet UIView *mainImagePlaceholderView;
__weak IBOutlet UILabel *mainImageLabel;
__weak IBOutlet UIView *imageFilmstripPlaceholderView;

这些位于我的 .m 文件中，...

@implementation iRpImageViewerViewController
{
    ...
    __weak IBOutlet UIView *mainImagePlaceholderView;
    __weak IBOutlet UILabel *mainImageLabel;
    __weak IBOutlet UIView *imageFilmstripPlaceholderView;
    ...
}

我的类(class)是 iRpImageViewerViewController.xib

在 IB 中，“文件所有者自定义类”是“iRpImageViewerViewController.m”

在 IB 中，nib 'view custom class' 是 UIView

一切都显示为正确连接。
我已经清理了我的构建文件夹。
我已经清除了我的派生数据文件夹。
我什至试图通过在 init 方法中引用它们并设置它们的背景色来欺骗 View 加载。

-(void)viewDidLoad
    {
        [super viewDidLoad];

        // Do any additional setup after loading the view from its nib.

        theMainImageGridviewControl = [[IGGridView alloc]initWithFrame:mainImagePlaceholderView.frame style:IGGridViewStyleSingleCellPaging];

        // Set additional properties to configure the grid view
        theMainImageGridviewControl.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
        theMainImageGridviewControl.selectionType = IGGridViewSelectionTypeCell;
        theMainImageGridviewControl.contentInset = UIEdgeInsetsZero;
        theMainImageGridviewControl.allowHorizontalBounce = NO;
        theMainImageGridviewControl.alwaysBounceHorizontal = NO;
        theMainImageGridviewControl.alwaysBounceVertical = NO;

        [mainImagePlaceholderView addSubview:theMainImageGridviewControl];

        // Setting a breakpoint here reveals that all the outlets are nil
        [self addAChildViewController:theFilmstripViewController toViewWithTag:imageFilmstripPlaceholderView.tag];

        [self constructAndConfigurePrimaryImageMarker];

    }

Answer 1

不确定您是如何创建 XIB 和 View Controller 的，但您是否尝试将以下内容添加到您为 View Controller 调用的初始化程序中:

self = [super initWithNibName:@"iRpImageViewerViewController" bundle:nil];