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我创建了一个自定义视图并向其中添加了一个 UITextField。我的问题是：如何添加一个委托以便您可以将其设置为 XCode 的默认 cmd+拖动行为？

我目前的尝试是做这样的事情：

在我的 .h 文件中：

#import <UIKit/UIKit.h>

IB_DESIGNABLE

@interface CustomTextField : UIView

   @property (assign, nonatomic) IBInspectable id textFieldDelegate;

@end

和我的 .m 文件：

#import "CustomTextField.h"

@interface CustomTextField()

@property (strong, nonatomic) IBOutlet UITextField *textField;

@end

@implementation CustomTextField

- (instancetype)initWithFrame:(CGRect)frame{
    if (self = [super initWithFrame:frame]) {
        [self loadNib];
    }
    return self;
}

- (void)loadNib{

    UIView *view = [[[NSBundle bundleForClass:[self class]] loadNibNamed:@"CustomTextField" owner:self options:nil] firstObject];
    [self addSubview:view];
    view.frame = self.bounds;

}

- (void)setTextFieldDelegate:(id)textFieldDelegate{
    self.textField.delegate = textFieldDelegate;
}

@end

但它不会出现在 XCode 的左侧面板中，Connections Inspector 选项卡中。

这也是我当前的代码。

更新1：

如果使用下面的代码，我也会收到错误：

-  (id)initWithFrame:(CGRect)aRect
{
    self = [super initWithFrame:aRect];

    if (self)
    {
        [self loadNib];
    }

    return self;
}

- (id)initWithCoder:(NSCoder*)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self)
    {
        [self loadNib];
    }

    return self;
}


- (void)loadNib{
//
//    UIView *view = [[[NSBundle bundleForClass:[self class]] loadNibNamed:@"CustomTextField" owner:self options:nil] firstObject];
//    [self addSubview:view];
//    view.frame = self.bounds;

    UIView *view = [[[NSBundle bundleForClass:[self class]] loadNibNamed:@"CustomTextField" owner:self options:nil] firstObject];
    [view setTranslatesAutoresizingMaskIntoConstraints:NO];
    [self addSubview:view];
    [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[view]|­" options:0 metrics:nil views:NSDictionaryOfVariableBindings(view)]];
    [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[view]|­" options:0 metrics:nil views:NSDictionaryOfVariableBindings(view)]];

    self.textLabel.text = @"1";

}

关于我应该怎么做的任何建议？

更新 2 我最终将initWithFrame,initWithCoder和loadNib函数替换为：

- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder
{
    if (![self.subviews count])
    {
        NSBundle *mainBundle = [NSBundle mainBundle];
        NSArray *loadedViews = [mainBundle loadNibNamed:@"CustomTextField" owner:nil options:nil];
        CustomTextField *loadedView = [loadedViews firstObject];

        loadedView.frame = self.frame;
        loadedView.autoresizingMask = self.autoresizingMask;
        loadedView.translatesAutoresizingMaskIntoConstraints =
        self.translatesAutoresizingMaskIntoConstraints;

        for (NSLayoutConstraint *constraint in self.constraints)
        {
            id firstItem = constraint.firstItem;
            if (firstItem == self)
            {
                firstItem = loadedView;
            }
            id secondItem = constraint.secondItem;
            if (secondItem == self)
            {
                secondItem = loadedView;
            }
            [loadedView addConstraint:
             [NSLayoutConstraint constraintWithItem:firstItem
                                          attribute:constraint.firstAttribute
                                          relatedBy:constraint.relation
                                             toItem:secondItem
                                          attribute:constraint.secondAttribute
                                         multiplier:constraint.multiplier
                                           constant:constraint.constant]];
        }

        return loadedView;
    }
    return self;
}
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