ios iPhone - 根据文字调整 UILabel 宽度
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iPhone - Adjust UILabel width according to the text
提问by Dev
How can I adjust the label Width according to the text? If text length is small I want the label width small...If text length is small I want the label width according to that text length. Is it possible?
如何根据文本调整标签宽度？如果文本长度小，我希望标签宽度小...如果文本长度小，我希望根据该文本长度设置标签宽度。是否可以？
Actually I have Two UIlabels. I need to place these two nearby. But if the first label's text is too small there will be a big gap. I want to remove this gap.
其实我有两个 UIlabels。我需要把这两个放在附近。但是如果第一个标签的文字太小，就会有很大的差距。我想消除这个差距。
回答by NANNAV
//use this for custom font
CGFloat width = [label.text sizeWithFont:[UIFont fontWithName:@"ChaparralPro-Bold" size:40 ]].width;
//use this for system font
CGFloat width = [label.text sizeWithFont:[UIFont systemFontOfSize:40 ]].width;
label.frame = CGRectMake(point.x, point.y, width,height);
//point.x, point.y -> origin for label;
//height -> your label height;
回答by Sihad Begovic
Function sizeWithFont:is deprecated in iOS 7.0, so you have to use sizeWithAttributes:for iOS 7.0+. Also to suport older versions, this code below can be used:
函数 sizeWithFont:在 iOS 7.0 中已弃用，因此您必须在sizeWithAttributes:iOS 7.0+ 中使用。同样为了支持旧版本，可以使用以下代码：
CGFloat width;
if ([[UIDevice currentDevice].systemVersion floatValue] < 7.0)
{
width = [text sizeWithFont:[UIFont fontWithName:@"Helvetica" size:16.0 ]].width;
}
else
{
width = ceil([text sizeWithAttributes:@{NSFontAttributeName: [UIFont fontWithName:@"Helvetica" size:16.0]}].width);
}
Using function ceil()on result of sizeWithAttributes:is recommended by Apple documentation:
Apple 文档推荐ceil()在结果上使用函数sizeWithAttributes:：
"This method returns fractional sizes; to use a returned size to size views, you must raise its value to the nearest higher integer using the ceil function."
“此方法返回小数大小；要使用返回的大小来调整视图的大小，您必须使用 ceil 函数将其值提高到最接近的更高整数。”
回答by Vinayak
// In swift 2.0
let lblDescription = UILabel(frame: CGRectMake(0, 0, 200, 20))
lblDescription.numberOfLines = 0
lblDescription.text = "Sample text to show its whatever may be"
lblDescription.sizeToFit()
// Its automatically Adjust the height
回答by iDev
Try these options,
试试这些选项，
UIFont *myFont = [UIFont boldSystemFontOfSize:15.0];
// Get the width of a string ...
CGSize size = [@"Some string here" sizeWithFont:myFont];
// Get the width of a string when wrapping within a particular width
NSString *mystring = @"some strings some string some strings...";
CGSize size = [mystring sizeWithFont:myFont
forWidth:150.0
lineBreakMode:UILineBreakModeWordWrap];
You can also try with [label sizeToFit];Using this method, you can set frame of two labels as,
您也可以尝试[label sizeToFit];使用此方法，您可以将两个标签的框架设置为，
[firstLabel sizeToFit];
[secondLabel sizeToFit];
secondLabel.frame = CGRectMake(CGRectGetMaxX(firstLabel.frame), secondLabel.origin.y, secondLabel.frame.size.width, secondLabel.frame.size.height);
回答by Shanmugaraja G
sizeWithFont constrainedToSize:lineBreakMode:is the original method to use. Here is an example of how to use it is below:
sizeWithFont constrainedToSize:lineBreakMode:是使用的原始方法。以下是如何使用它的示例：
//Calculate the expected size based on the font and linebreak mode of your label
CGSize maximumLabelSize = CGSizeMake(296,9999);
CGSize expectedLabelSize = [yourString sizeWithFont:yourLabel.font constrainedToSize:maximumLabelSize lineBreakMode:yourLabel.lineBreakMode];
//adjust the label the the new height.
CGRect newFrame = yourLabel.frame;
newFrame.size.height = expectedLabelSize.height;
yourLabel.frame = newFrame;
回答by jenish
just use to if you using constrain in your view or xib or cell
如果您在视图或 xib 或单元格中使用约束，请使用 to
[LBl sizeToFit];
if its not working then
如果它不工作那么
dispatch_async(dispatch_get_main_queue(), ^{
[LBl sizeToFit];
});
回答by Ravi Raman
Try the following:
请尝试以下操作：
/* Consider these two labels as the labels that you use,
and that these labels have been initialized */
UILabel* firstLabel;
UILabel* secondLabel;
CGSize labelSize = [firstLabel.text sizeWithFont:[UIFont systemFontOfSize:12]];
//change the font size, or font as per your requirements
CGRect firstLabelRect = firstLabel.frame;
firstLabelRect.size.width = labelSize.width;
//You will get the width as per the text in label
firstLabel.frame = firstLabelRect;
/* Now, let's change the frame for the second label */
CGRect secondLabelRect;
CGFloat x = firstLabelRect.origin.x;
CGFloat y = firstLabelRect.origin.y;
x = x + labelSize.width + 20; //There are some changes here.
secondLabelRect = secondLabel.frame;
secondLabelRect.origin.x = x;
secondLabelRect.origin.y = y;
secondLabel.frame = secondLabelRect;
