我已经测试过了,看起来是的。所以我的问题是,它是否总是增加保留计数。

所以每次我做这样的事:

UIView *theView = [[[UIView alloc] initWithFrame:(CGRect)aFrame] autorelease];
[self.view addSubview:theView];

我真的在泄露记忆吗?

@property (nonatomic, retain) UILabel *ingredientsTextLabel; 我在其中实例化的 viewDidLoad 使用此代码:

视图加载 :

    ingredientsTextLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, ingredientsScrollView.frame.size.width, ingredientsScrollView.frame.size.height)];
    [ingredientsTextLabel setBackgroundColor:[UIColor clearColor]];
    [ingredientsTextLabel setFont:[UIFont fontWithName:@"Helvetica" size:18]];
    [ingredientsTextLabel setText:ingredientsText];
    [ingredientsTextLabel setNumberOfLines:0];
    [ingredientsTextLabel setLineBreakMode:UILineBreakModeWordWrap];
    NSLog(@"%i",[ingredientsTextLabel retainCount]); // here retain count is 1

    CGSize maxSize = CGSizeMake(ingredientsScrollView.frame.size.width, 9999);
    CGSize ingLabSize = [ingredientsText sizeWithFont:ingredientsTextLabel.font
                                    constrainedToSize:maxSize
                                        lineBreakMode:ingredientsTextLabel.lineBreakMode];

    [ingredientsTextLabel setFrame:CGRectMake(ingredientsTextLabel.frame.origin.x, ingredientsTextLabel.frame.origin.x, ingredientsTextLabel.frame.size.width, ingLabSize.height)];
    [ingredientsScrollView addSubview:ingredientsTextLabel];
    NSLog(@"%i",[ingredientsTextLabel retainCount]); // here retain count is 2!

ingredientsTextLabel ,但是retain count是2,所以在添加subview之后是否还需要释放I 也