使用 xib 将手势添加到 UICollectionViewCell 子视图

Question

我正在尝试使用 xib 向 UICollectionViewCell 的子视图添加手势，我正在这样做：

.h

@interface MyCell : UICollectionViewCell <UIGestureRecognizerDelegate> 

@property (weak, nonatomic) IBOutlet UIView *containerButton;

@end

.m

@implementation MyCell

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

- (void)initialize
{
    UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
    [panGestureRecognizer setDelegate:self];

    if (self.containerButton) {
        NSLog(@"ok"); //not enter here
        [self.containerButton addGestureRecognizer:panGestureRecognizer];
    }
}

-(void)prepareForReuse {
    [super prepareForReuse];
    if (self.containerButton) {
        NSLog(@"ok 2");
    }
}

我已经创建了与xib文件连接的UICollectionViewCell子类，在这里我创建了容器按钮视图，如果我尝试在initialize方法中添加手势，containerButton为nil，所以不起作用，但是在prepareForReuse 方法不为空，我可以在那里添加手势吗？或者我可以在其他地方做吗？

Answer 1

试试这个：

- (void)awakeFromNib
{
    UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
    [panGestureRecognizer setDelegate:self];

    if (self.containerButton) {
        NSLog(@"ok"); //not enter here
        [self.containerButton addGestureRecognizer:panGestureRecognizer];
    }
}