I have an iOS 11 app with a table with cells.
In this cells, I have a UILabel.
The UILabel seems to "decide" to break the line in a way that keeps the bottom line with at least 2 words (no matter what the BreakLineMode is!).
I know about using -
Adding non-breaking space (U+00A0) - TOO EXPENSIVE
and
Using NSAllowsDefaultLineBreakStrategy NO on NSUserDefaults - NOT ALLOWED BY APPLE
What can I do to fix this problem?
In this image, you can see that the first word in the second line, could appear on the first line but got down to the second for some reason...
EDIT:
This is NOT a width issue, this is an issue with iOS 11 NEW UILabel logic(!) that doesn't allow orphans words (one word) on a new line, Only two word because they think it looks better. It doesn't. But there must be a way to make a UILabel act on iOS 11 like it did on iOS 10 and under.
I have found an hack -
Adding a lot of spaces (like 10 - 20) to the end of the string will make the UILabel "think" that the line is long enough so it will leave one word on the bottom line. (instead of 2 so the first line will not break early)
I don't like hacks but this is all I've got at the moment, if anybody has a different answer i will gladly accept it instead of this one
You can add this three line of code -
labelName.adjustsFontSizeToFitWidth = true
labelName.minimumScaleFactor = 0.3
labelName.numberOfLines = 0 // or you can set it 1 or 2
In my case I was able to solve this by using a textview.
UITextView allows orphans, sizes according to intrinsic size if scrolling is disabled and works like label if interaction is disabled, which is also disabled in label so it will forward all the touches.
Related
I have problem with application using XIBs without autolayout. I don't know if this is important information.
I have UILabel with 2 lines using word wrap. In iOS 10 word wrap was working correctly, and first line contained one word + special character, for example ampersand. Example:
Then on iOS 11 word wrap is working somehow wrong and puts ampresand to the second line:
This is problematic as longer words, that normally fitted on second line now are not being shown correctly. Any idea what has changed? I know about safeArea but it doesn't look like reason. Any ideas how to move that ampersand to the top where is plenty of space for it?
Rest of the settings:
This is a change by Apple to prevent widowed lines. From a design perspective, it is preferred to avoid having a single word on a line of text. UILabel now breaks the line in a way that the second line of text always has at least 2 words on it.
See the answer below for an option to disable it.
Also here's a good article about "widowed" and "orphaned" text.
Since iOS 14 you can use lineBreakStrategy property of UILabel instance to control this behavior.
Available values are:
NSParagraphStyle.LineBreakStrategy() // none
NSParagraphStyle.LineBreakStrategy.pushOut
NSParagraphStyle.LineBreakStrategy.hangulWordPriority
NSParagraphStyle.LineBreakStrategy.standard
To disable this behavior using Swift:
if #available(iOS 14.0, *) {
label.lineBreakStrategy = []
}
// Alternatives
// label.lineBreakStrategy = NSParagraphStyle.LineBreakStrategy()
// label.lineBreakStrategy = .init(rawValue: 0)
// label.lineBreakStrategy = .init()
To make it work on lower iOS versions, you can use NSAttributedString:
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineBreakStrategy = []
let attributedString = NSAttributedString(string: "Your text here", attributes: [
.paragraphStyle: paragraphStyle
])
let label = UILabel()
label.attributedText = attributedString
Objective-C:
if (#available(iOS 14.0, *)) {
label.lineBreakStrategy = NSLineBreakStrategyNone;
}
Launching the app with the arguments -NSAllowsDefaultLineBreakStrategy NO (an undocumented defaults setting) seems to force back to the old behavior. Alternatively, you can set NSAllowsDefaultLineBreakStrategy to NO in NSUserDefaults at startup (Apple registers a default of YES for that value when UILabel or the string drawing code is initialized, it appears, so you would need to register an overriding value after that, or insert it into the NSArgumentDomain, or just set the default persistently).
Apple may consider that private API and reject apps that use it; I'm not sure. I have not tried this in a shipping app. However, it does work in quick testing -- saw the setting in NSUserDefaults and found changing it altered the behavior.
This is not really an answer, but I want to add an illustration of how it is a general problem, not at all related to ampersands.
Both of these UILabels have identical width constraints, and the text is almost identical. But the second has the word wrap I would expect. The first is incorrect, the "about" can clearly stay on the first line.
A bit of a hack but you can add some zero width spaces to the end of the string to restore the old behaviour, without affecting the layout of the string otherwise that you'd get from normal spaces:
let zeroWidthSpace: Character = "\u{200B}"
let spacingForWordWrapping = String(repeating: zeroWidthSpace, count: 6)
label.text = "oneText & two" + spacingForWordWrapping
It seems that replacing the space before the ampersand with a non-breaking space (U+00A0) keeps the ampersand on the same line. Depending on how you are generating the text for the label, this might not be easy to automate (maybe you really do need the ampersand to be on the second line in some cases).
An option may be to use a UITextView instead -- that does not seem to have this behavior. If you set the NSTextContainer.lineFragmentPadding to 0, the textContainerInset to UIEdgeInsetsZero, and turn off all scrolling (scrollEnabled, bounces, scroll indicators, etc.) it will display similarly to a UILabel, though not with as much constraint flexibility. It's not a drop-in replacement, but in some situations it's acceptable.
As a simple (hacky) workaround, you can often get the correct behaviour with a UILabel by adding spaces at the end of your text. Using your example:
Wraps the new (undesired) way:
"oneText & two."
Wraps the old way:
"oneText & two. " (note the 2 extra spaces at the end of the string)
The obvious downside is if those extra spaces get forced to a new line by themselves, but for something simple like a title it's often enough.
I'm currently trying to make an app that takes the usernames of some people and print them out in a custom cell, inside a label.
But if a user has the name "John Goodwilkinson" It's a large name,
so i'm trying to figure out how to make a
/n
Between the 2 words.
Does anyone has any idea?
I've googled but couldnt find anything at all.
Below you can see the screenshots with my code and the suggestions of the fellows :)
Also i have tried to put the code in the view controller that i call the custom cell like this
cell.frndName.numberOfLines = 0
cell.frndName.lineBreakMode = .ByWordWrapping
But it didn't work either
You can do that by setting the number of lines to the label to be 2 or 0 (if you wnat to be any number) and line breaks to be word wrap.
Link this
Update
after checking you UI. It ended up that removing the height/ width constraints and pinning the label from the bottom/ right the other controllers solved the problem.
You have to increase height of your UILabel and apply constant only for its width.
second thing you can add #“\n” by NSString *newUsername = [oldUsername stringByReplacingOccurrencesOfString:#" " withString:#“\n”];
it will replace all spaces between two words by #“\n” and next word will show in next line.
I am having a slight issue at the moment regarding finding specific characters in a UILabel. I tried the simple
if variable == "the string you want it to equal" {
//Do the thing you want
}
The issue is that my UIlabel updates based on the time. This normally would be no issue but I also have a smaller Label next to it as seconds.
This works fine until the main time label hits the double digits of 10, 11, 12. This causes the Label to expand and cuts off the smaller seconds label. I know I could place the smaller label somewhere where the main label doesn't cut it but the design wouldn't be as great.
I tried also to make variables as BOOLEANS
let time10 = "10"
let time11 = "11"
let time12 = "12"
Now this would require me to make many other variables like "10:01, 10:02" which would be highly inefficient.
Is it possible for a feature in swift to look up a specific amount of characters in a string (the first 2 in this case" and let me write the thing I want to do if the condition is met?
Try playing with .minimumScaleFactor and auto layout priorities.
The first one will let one label scales down font size to avoid ....
With auto layout priorities you can make a label shrinks in spite of another.
It should be easier if you are using Interface Builder.
Hope this helps
Try using label.sizeToFit every time you update the label's value. Hopefully it should fix the issue.
To answer your original question, you can use the count function, for example you can do count(string), as explained in this answer.
I need a customized keyboard. Only certain certain letters should be in the keyboard. I guess this is quite easy. The problem is that I need each tangent to basically contain 2 characters.
Lets say that each letter has a value. So for the letter A that has a value of 1 I also need to display that number in the same tangent. I would be like 70-80% of all the space would be taken by the letter A and (maybe at the bottom, right aligned) there would be a little number.
I guess this is not possible to do by using and customizing the default keyboard right? What would you suggest? Thanks.
considering you requirements you got nothing to do with the default keyboard...
create a UIView with buttons for the keys and use it wherever you like.
Godd Luck,
I have a XIB file of type View XIB. In it I have a View controller, and in the View controller I have a label.
I have long text that I want to break, but it doesn't - it gets truncated.
I tried this solution - I did it in the attribute window - but it doesn't help.
You could use a TextView and disable the Editable and User Interaction Enabled options in IB.
use this
myLabel.lineBreakMode = UILineBreakModeWordWrap;
if you are worried about backwards compatibility use this because the comand i mentioned before was introduced in iOS 6.0
myLabel.numberOfLines = 0;
I have been running into a similar problem. I started out with a label, but wanted multi-lines and a UITextView worked great for this, at first. Because I am using a third party library (MBProgressHUD) to handle stuff like progress messages and what not, I had thread problems when trying to update a UITextView and show the progress message at the same time.
So I went back to UILabel which actually didn't have thread problems. I found a property to allow a specific number of lines of my choosing, and had to create the label big enough to display those lines. The downfall to this approach is that I don't get the context menus like Copy, Paste, etc. but more importantly I'm not running into thread problems. I can always embed this into a UIScrollView in the future if I so choose.
You could check out my category for UILabel on GitHub. https://gist.github.com/1005520
This lets you resize the height of the label to accommodate the content.
From the Attiribute inspector, choose LineBreaks->Word Wrap option when you have selected the lablel. Also increase the number of lines Label->Lines.
Try Following steps to solve issue :
Drag out a UITextView.
Double-click it to edit text, place cursor where you want the
paragraph break.
Option-Enter a couple of times to create a blank line & paragraph.