Objective c UILabel动态内容自动大小问题

请，我需要一些UILabel的帮助，这些UILabel必须包含动态内容。它们包含在UIScrollView中

我无法根据屏幕方向正确调整它们的大小。我还想在他们之间保持精确的距离。 现在，我和其中的两个（很多都会来）有麻烦

我正在使用以下代码调整它们的大小，但没有得到预期的结果：

    - (void) updateLabelsPositionForPortrait
{
    summary_PersonalMonth.numberOfLines = 0;
    summary_PersonalDay.numberOfLines = 0;

    summary_PersonalMonth.frame = CGRectMake(summary_PersonalMonth.frame.origin.x,
                                             summary_PersonalMonth.frame.origin.y,
                                             summary_PersonalMonth.frame.size.width + 15,
                                             summary_PersonalMonth.frame.size.height);
    [summary_PersonalMonth sizeToFit];

    summary_PersonalDay.frame = CGRectMake(summary_PersonalDay.frame.origin.x,
                                           summary_PersonalDay.frame.origin.y + summary_PersonalMonth.bounds.origin.y + 10,
                                           summary_PersonalDay.frame.size.width + 15,
                                           summary_PersonalDay.frame.size.height);
    [summary_PersonalDay sizeToFit];

    [self updateScrollViewContentSize];
}

- (void) updateLabelsPositionForLandscape
{
    summary_PersonalMonth.numberOfLines = 1;
    summary_PersonalDay.numberOfLines = 1;

    summary_PersonalMonth.frame = CGRectMake(summary_PersonalMonth.frame.origin.x,
                                             summary_PersonalMonth.frame.origin.y,
                                             summary_PersonalMonth.frame.size.width,
                                             summary_PersonalMonth.frame.size.height);
    [summary_PersonalMonth sizeToFit];

    summary_PersonalDay.frame = CGRectMake(summary_PersonalDay.frame.origin.x,
                                           summary_PersonalDay.frame.origin.y - summary_PersonalMonth.bounds.origin.y - 10,
                                           summary_PersonalDay.frame.size.width,
                                           summary_PersonalDay.frame.size.height);
    [summary_PersonalDay sizeToFit];

}

我调用shouldAutorotateToInterfaceOrientation中的每个方法：在相应的方向中

if (UIInterfaceOrientationIsPortrait([UIDevice currentDevice].orientation))
{
    [self updateLabelsPositionForPortrait];
}
else
{
    [self updateLabelsPositionForLandscape];
}

结果如下：

• 视图加载时的初始结果

• 在景观中旋转后的结果

• 旋转回纵向后的结果

求你了，我需要建议

---

谢谢大家!

您似乎一次又一次地在相同的帧上操作。尝试使用以下代码：

// Declare the below variables as globals
CGRect defaultRectPortrait = CGRectZero;
CGRect defaultRectLandscape = CGRectZero;

- (void) updateLabelsPositionForPortrait
{
    summary_PersonalMonth.numberOfLines = 0;
    summary_PersonalDay.numberOfLines = 0;

    if(defaultRectPortait == CGRectZero)
        defaultRectPortait = CGRectMake(summary_PersonalMonth.frame.origin.x,
                                             summary_PersonalMonth.frame.origin.y,
                                             summary_PersonalMonth.frame.size.width + 15,
                                             summary_PersonalMonth.frame.size.height);

    [summary_PersonalMonth setFrame:defaultRectPortrait];
    [summary_PersonalMonth sizeToFit];

    // Do a similar thing for summary_PersonalDay

    [self updateScrollViewContentSize];
}    

- (void) updateLabelsPositionForLandscape
{
    // Use similar logic for summary_PersonalMonth and summary_PersonalDay in landscape as well
}

最后：

if (UIInterfaceOrientationIsPortrait([UIDevice currentDevice].orientation))
{
    [self updateLabelsPositionForPortrait];
}
else
{
    [self updateLabelsPositionForLandscape];
}

---

在NSArray中存储所有标签，从开始到结束

现在制作一个功能，根据方向设置标签框架：

-(void)setFramesOfLabel:(BOOL)flag
{
    if(flag) //portrait
    {
      int height = 20;
      int spaceBetweenLabels = 20;
      itn xspace = 20 //
    }
    else//landscape changes
    {
      int height = 20;
      int spaceBetweenLabels = 20;
      itn xspace = 20 /
    }
    int count = 0;
    for(UILabel *label in arrLabels)
    {
       NSString *strText = [arrTexts objectAtIndex:count]; //as u may having text array to fill in labels as i assume
       CGSize expectedLabelSize = [strText sizeWithFont:label.font constrainedToSize:maximumLabelSize lineBreakMode:UILineBreakModeWordWrap]; //

       CGrect *newFrame = CGRectMake(xspace,height,expectedLabelSize.width,expectedLabelSize.height);
       [label setFrame:newFrame];

        height += expectedLabelSize.height;
       count ++;
    }
    [scrollView setContentSize(scrollView.width,height)];
}

使用

---

它不起作用了。。。。你不能比较CGRect（它是一个结构），但我用CGRectIsEmpty代替了。是的，关于

CGRectIsEmpty

，我动态地写了代码。但它对这4条线路中的任何一条都不起作用，还是仅仅是其中的一条？非常优雅的解决方案：）！我几分钟后就试试看！

if (UIInterfaceOrientationIsPortrait([UIDevice currentDevice].orientation))
{
  [self setFramesOfLabel:TRUE];
}
else
{    
  [self setFramesOfLabel:FALSE];
}