How to add line break for UILabel?
IosIphoneUilabelNewlineLine BreaksIos Problem Overview
Let see that I have a string look like this:
NSString *longStr = @"AAAAA\nBBBBB\nCCCCC";
How do I make it so that the UILabel display the message like this
> AAAAA
> BBBBB
> CCCCC
I don't think \n
is recognized by UILabel, so is there anything that I can put inside NSString so that UILabel knows that it has to create a line break there?
Ios Solutions
Solution 1 - Ios
Use \n
as you are using in your string.
Set numberOfLines to 0 to allow for any number of lines.
label.numberOfLines = 0;
Update the label frame to match the size of the text using sizeWithFont:
. If you don't do this your text will be vertically centered or cut off.
UILabel *label; // set frame to largest size you want
...
CGSize labelSize = [label.text sizeWithFont:label.font
constrainedToSize:label.frame.size
lineBreakMode:label.lineBreakMode];
label.frame = CGRectMake(
label.frame.origin.x, label.frame.origin.y,
label.frame.size.width, labelSize.height);
Update : Replacement for deprecated
sizeWithFont:constrainedToSize:lineBreakMode:
Reference, https://stackoverflow.com/q/18897896/1603234
CGSize labelSize = [label.text sizeWithAttributes:@{NSFontAttributeName:label.font}];
label.frame = CGRectMake(
label.frame.origin.x, label.frame.origin.y,
label.frame.size.width, labelSize.height);
Solution 2 - Ios
Use option-return when typing in the little box in Interface Builder to insert a line feed (\n). In Interface Builder's Label attributes, set # Lines = 0.
Select the label and then change Lines property to 0 like in the above image, and then use \n in your string for line break.
Solution 3 - Ios
In the interface builder, you can use Ctrl + Enter to insert /n
to the position you want.
This way could implement the following situation
aaaaaaa
Solution 4 - Ios
If you read a string from an XML file, the line break \n
in this string will not work in UILabel
text. The \n
is not parsed to a line break.
Here is a little trick to solve this issue:
// correct next line \n in string from XML file
NSString *myNewLineStr = @"\n";
myLabelText = [myLabelText stringByReplacingOccurrencesOfString:@"\\n" withString:myNewLineStr];
myLabel.text = myLabelText;
So you have to replace the unparsed \n
part in your string by a parsed \n
in a hardcoded NSString
.
Here are my other label settings:
myLabel.numberOfLines = 0;
myLabel.backgroundColor = [UIColor lightGrayColor];
myLabel.textColor = [UIColor redColor];
myLabel.font = [UIFont fontWithName:@"Helvetica Neue" size:14.0];
myLabel.textAlignment = UITextAlignmentCenter;
Most important is to set numberOfLines
to 0
(= unlimited number of lines in label).
No idea why Apple has chosen to not parse \n
in strings read from XML?
Hope this helps.
Solution 5 - Ios
You have to set the numberOfLines
property on the UILabel
. The default is 1, if you set it to 0 it will remove all limits.
Solution 6 - Ios
Important to note it's \n
(backslash) rather than /n
.
Solution 7 - Ios
For those of you who want an easy solution, do the following in the text Label input box in Interface Builder:
Make sure your number of lines is set to 0.
Alt + Enter
(Alt is your option key)
Cheers!
Solution 8 - Ios
In Swift 2.2, > iOS 8
I've set Lines = 0 on Storyboard, under Attribute Inspector and linked a referencing outlet to the label. Then use in controller like this:
@IBOutlet weak var listLabel: UILabel!
override func viewDidLoad() {
...
listLabel.text = "Line 1\nLine 2\nLine 3\nLine 4\nLine 5\nLine 6\nLine 7\nLine 8"
}
Solution 9 - Ios
In xCode 11, Swift 5 the \n
works fine, try the below code:
textlabel.numberOfLines = 0
textlabel.text = "This is line one \n This is line two \n This is line three"
Solution 10 - Ios
Just do it like this
NSString * strCheck = @"A\nB";
strCheck = [strCheck stringByReplacingOccurrencesOfString:@"\\n" withString:@"\n"]; //This is to prevent for fetching string from plist or data structure
label.numberOfLines = 0;
label.lineBreakMode = NSLineBreakByWordWrapping;
label.text = strCheck;
Solution 11 - Ios
// DO not forget to set numberOfLines to zero
UILabel* locationTitle = [[UILabel alloc] initWithFrame:CGRectMake(5, 30, 230, 40)];
locationTitle.font = [UIFont systemFontOfSize:13.0];
locationTitle.numberOfLines = 0;
locationTitle.text = [NSString stringWithFormat:@"Eaton industries pvt. Ltd \nUK Apr 12"];
[cell addSubview:locationTitle];
Solution 12 - Ios
If your using a UILabel
you have to remember that the default setting is 1 line, so it does not matter how many breaks you add (\n
or \r
), you need to make sure it is set to more than one line so it could be allowed to append more lines.
One alternative is to use UITextView
which is really meant for multilines.
You can easily achieve this in XCode attribute section of the UILabel, see screenshot:
Solution 13 - Ios
On Xcode 6, you can just use \n even inside a string when using word wrap. It will work. So for example:
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, screenRect.size.width, 50)];
label.textAlignment = NSTextAlignmentCenter;
label.text = @"This will be on the first line\nfollowed by a line under it.";
label.lineBreakMode = UILineBreakModeWordWrap;
label.numberOfLines = 0;
Solution 14 - Ios
In my case also \n was not working, I fixed issue by keeping number of lines to 0 and copied and pasted the text with new line itself for example instead of Hello \n World i pasted
> Hello > > World
in the interface builder.
Solution 15 - Ios
Just using label.numberOfLines = 0;
Solution 16 - Ios
textLabel.text = @"\nAAAAA\nBBBBB\nCCCCC";
textLabel.numberOfLines = 3; \\As you want - AAAAA\nBBBBB\nCCCCC
textLabel.lineBreakMode = UILineBreakModeWordWrap;
NSLog(@"The textLabel text is - %@",textLabel.text);
Solution 17 - Ios
For anyone else that might have trouble with sizeWithFont:constrainedToSize:lineBreakMode:
or anyone switching to ios8 (the method is deprecated as of ios7), I adjusted my height by using sizeToFit
instead.
UILabel *label;
label.numberOfLines = 0;
// Setup label with desired settings
...
[label sizeToFit];
label.frame = CGRectMake(label.frame.origin.x, // Or use any desired origin
label.frame.origin.y,
label.frame.size.width, // Or use any desired width
label.frame.size.height);
Solution 18 - Ios
NSCharacterSet *charSet = NSCharacterSet.newlineCharacterSet;
NSString *formatted = [[unformatted componentsSeparatedByCharactersInSet:charSet] componentsJoinedByString:@"\n"];
Solution 19 - Ios
It seems wrong to me to change the label frame sizes especially when using autolayout. Using the appendFormat method seems more appropriate. Here is my example:
NSMutableString *list = [[NSMutableString alloc] init];
NSArray *textArray = @[@"AAAA", @"BBBB"];
for (NSString *string in textArray) {
[list appendFormat:@"%@\n", string.mutableCopy];
}
self.label.text = list;
self.label.numberOfLines = 0;
Solution 20 - Ios
If you set your UILable properties from Plain to Attributed...the UILabel will hold multiline text no matter how many paragraphs for along as your UILabel height and width are set to fit the screen area you want to display the text in.
Solution 21 - Ios
I have faced same problem, and here is, how i solved the problem. Hope this will be helpful for someone.
// Swift 2
lblMultiline.lineBreakMode = .ByWordWrapping // or use NSLineBreakMode.ByWordWrapping
lblMultiline.numberOfLines = 0
// Objective-C
lblMultiline.lineBreakMode = NSLineBreakByWordWrapping;
lblMultiline.numberOfLines = 0;
// C# (Xamarin.iOS)
lblMultiline.LineBreakMode = UILineBreakMode.WordWrap;
lblMultiline.Lines = 0;