objective-c - iOS中UIView调用removeFromSuperView之后没有释放内存

Question

我有一个自定义的UITableViewCell，暂且叫ACell，该cell有以下属性：

@property (nonatomic, strong) UILabel *titleLabel;
@property (nonatomic, strong) UIButton *deleteButton;

全部addSubview到cell的contentView，主要是点击deleteButton之后把titleLabel移除：

- (void)deleteButtonClicked {
    [self.titleLabel removeFromSuperview];
}

执行以上语句之后我发现，titleLabel还是存在于内存中。就像下面这样：

怎么样才能让它立即销毁

Answer 1

The reason is: ACell still holds the titleLabel object.
Solution:self.titleLabel = nil;

Answer 2

Replace strong with weak. One thing to note is to copy the attributes after addsubview