ios 根据内容调整 UILabel 的大小
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Resize UILabel based on content
提问by ksn
I have a UILabel, his text size has the property
我有一个 UILabel，他的文字大小有属性
title.adjustsFontSizeToFitWidth = YES;
that prevents me from using standard methods to resize the UILabel. I read on another post here that I'm supposed to use the function
这阻止我使用标准方法来调整 UILabel 的大小。我在这里读到另一篇文章，我应该使用该功能
sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode
from this answer: How to figure out the font size of a UILabel when -adjustsFontSizeToFitWidth is set to YES?
来自这个答案：当 -adjustsFontSizeToFitWidth 设置为 YES 时，如何确定 UILabel 的字体大小？
Now, i can't figure out how to make it work.. this is the actual code
现在，我不知道如何让它工作..这是实际的代码
UIFont *font = [UIFont fontWithName:@"Marker Felt" size:200];
UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, width, 20.0)];
title.text = @"this is a long title that should be resized";
title.font = font;
title.numberOfLines = 1;
title.adjustsFontSizeToFitWidth = YES;
CGFloat pointSize = 0.0;
CGSize size = [title.text sizeWithFont:font
minFontSize:title.minimumFontSize
actualFontSize:&pointSize
forWidth:width
lineBreakMode:title.lineBreakMode];
title.frame = CGRectMake(title.frame.origin.x,
title.frame.origin.y,
size.width,
size.height);
The UILabel get resized wrongly, as if the font size it's still 200.. Any clues? Thanks!
UILabel 被错误地调整大小，好像字体大小仍然是 200 .. 任何线索？谢谢！
采纳答案by lemnar
I'd suggest filing this as a bug.
我建议将此作为错误提交。
The size returned by -sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode:has the correct width, but not the height does not account for the actual font size.
返回的大小-sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode:具有正确的宽度，但不是高度不占实际字体大小。
It seems likely that UILabelalso has this bug. Changing the size of a label to match the height of the text in a font of the size returned by -sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode:will incorrectly vertically position the text within the label.
似乎UILabel也有这个错误。更改标签的大小以匹配返回大小的字体中的文本高度-sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode:将错误地垂直定位标签内的文本。
A work-around is to calculate the correct height, and change the font on the label to with the actual font size:
解决方法是计算正确的高度，并将标签上的字体更改为实际字体大小：
CGFloat pointSize = 0.0f;
CGRect frame = title.frame;
frame.size = [title.text sizeWithFont:font
minFontSize:title.minimumFontSize
actualFontSize:&pointSize
forWidth:width
lineBreakMode:title.lineBreakMode];
UIFont *actualFont = [UIFont fontWithName:@"Marker Felt" size:pointSize];
CGSize sizeWithCorrectHeight = [title.text sizeWithFont:actualFont];
frame.size.height = sizeWithCorrectHeight.height;
title.frame = frame;
title.font = actualFont;
回答by Daniel
I have some code you could use on my github, check it out, it's a category for UILabel, you need to set the frame width and when you can resizeToFit on the UILabel, it adjusts the height to fit the content, and returns the y position of the end of the label so you can adjust any content appearing after it.
我有一些代码你可以在我的 github 上使用，看看它，它是 UILabel 的一个类别，你需要设置框架宽度，当你可以在 UILabel 上 resizeToFit 时，它会调整高度以适应内容，并返回 y标签末尾的位置，以便您可以调整出现在它之后的任何内容。
回答by Nekto
Try to create fontwith smaller fontSize. For example:
尝试使用较小的 fontSize创建字体。例如：
UIFont *font = [UIFont fontWithName:@"Marker Felt" size:20];
but to actualFontSizepass link to CGFloat == 200.
但实际字体大小传递链接到 CGFloat == 200。
UPDATED:
更新：
try this then:
然后试试这个：
UIFont *font = [UIFont fontWithName:@"Marker Felt" size:20];
UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, width, 20.0)];
title.text = @"this is a long title that should be resized";
title.font = font;
title.numberOfLines = 1;
title.adjustsFontSizeToFitWidth = YES;
CGFloat pointSize = 0.0;
CGSize size = [title.text sizeWithFont:font minFontSize:title.minimumFontSize actualFontSize:&pointSize forWidth:width lineBreakMode:title.lineBreakMode];
title.frame = CGRectMake(title.frame.origin.x, title.frame.origin.y, size.width, size.height);
font = [UIFont fontWithName:@"Marker Felt" size:200];
title.font = font;
回答by shivangi
UILabel * label = [[UILabel alloc] init];
[label setNumberOfLines:0];
label.text=[detailDict valueForKey:@"method"];
[label setFont:[UIFont fontWithName:@"Georgia" size:16.0]];
CGSize labelsize=[label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(250, 1000.0) lineBreakMode:UILineBreakModeWordWrap];
int y=0;
label.frame=CGRectMake(38, y, 245, labelsize.height);
[label setBackgroundColor:[UIColor clearColor]];
[label setTextColor:[UIColor whiteColor]];
scrollView.showsVerticalScrollIndicator = NO;
y+=labelsize.height;
[scrollView setContentSize:CGSizeMake(200,y+50)];
[scrollView addSubview:label];
[label release];
I think you should use this code and i am using the label on scrollview for a big text you can also do so
我认为您应该使用此代码，我正在使用滚动视图上的标签作为大文本，您也可以这样做
回答by Sankalp S Raul
Have you tried intrinsicContentSize?
您是否尝试过内在内容大小？
myLable.numberOfLines = 0
myLable.frame = CGRect(x: 10, y: 10, width: 300, height: lblSuperscript.intrinsicContentSize().height)
