Question

还有如何解决“预期”;在'{'token？代码之前（来自xcode 3.2.3）

- (void)viewDidUnload {

    self.cheatName = nil;

    self.description = nil;

}

两个错误都在第一行

- (void)viewDidLoad {
    [super viewDidLoad];

    [self.titleLabel setText:self.title];
    [self.descriptionLabel setText:self.description];


    float textHeight = [MLUtils calculateHeightOfTextFromWidth:self.description : descriptionLabel.font :descriptionLabel.frame.size.width :UILineBreakModeWordWrap];

    CGRect frame = descriptionLabel.frame;
    frame.size.height = textHeight;
    descriptionLabel.frame = frame;

    CGSize contentSize = descriptionScrollView.contentSize;
    contentSize.height = textHeight;
    descriptionScrollView.contentSize = contentSize;



- (void)viewDidUnload {
    self.cheatName = nil;
    self.description = nil;

}

Answer 1

你错过了一个结束括号：

- (void)viewDidLoad {
    [super viewDidLoad];

    [self.titleLabel setText:self.title];
    [self.descriptionLabel setText:self.description];


    float textHeight = [MLUtils calculateHeightOfTextFromWidth:self.description : descriptionLabel.font :descriptionLabel.frame.size.width :UILineBreakModeWordWrap];

    CGRect frame = descriptionLabel.frame;
    frame.size.height = textHeight;
    descriptionLabel.frame = frame;

    CGSize contentSize = descriptionScrollView.contentSize;
    contentSize.height = textHeight;
    descriptionScrollView.contentSize = contentSize;

} // <-- HERE

- (void)viewDidUnload {
    self.cheatName = nil;
    self.description = nil;

}

其次，我不确定这条线是否有效：

float textHeight = [MLUtils calculateHeightOfTextFromWidth:self.description : descriptionLabel.font :descriptionLabel.frame.size.width :UILineBreakModeWordWrap];

我认为你必须添加参数名称，如（虚构名称！）：

float textHeight = [MLUtils calculateHeightOfTextFromWidth:self.description font: descriptionLabel.font width:descriptionLabel.frame.size.width whatever:UILineBreakModeWordWrap];

Answer 2

通常这意味着您在该行之上的某处出现错误。或者错放了{}。

有谁知道如何解决“viewDidUnload undeclared”问题？

2 个答案: