I am a new iOS programming. Now i am creating a sample app which display text using ReadMoreTextView library. My content may contain many lines but by using this library i can maximumNumberOfLines to display how many lines of content should be displayed. I implement those content in cell of UITableView and i have problem is that, when i use label.attributedReadMoreText = NSAttributedString(string: "...") then end of content will display ... and when i click on it and then whole content will be display so, my question is that: How to not letting user click on that ... because i want user to click on cell then i will show another view and display whole content there?
How can i achieve something like this? Thank in advance.
This is how i set UITextView
lazy var categoryShortDetailLabel: ReadMoreTextView = {
let label = ReadMoreTextView()
label.font = UIFont(name: "SFCompactText-Regular", size: 16)
label.textColor = .black
label.isEditable = false
label.isSelectable = false
label.maximumNumberOfLines = 3
label.shouldTrim = true
label.attributedReadMoreText = NSAttributedString(string: "...")
label.translatesAutoresizingMaskIntoConstraints = false
return label
}()
Looking at the code here, I found that, the ReadMoreTextView is meant to provide you the feature like, ReadMore and ReadLess for the larger texts in textView.
However your requirement is to stop that functionality. Now, if you take a look at the code here, you will get the idea, that the function shoreMoreText and it's a private function so, can't override it. and this function is expanding the texts and setting the numberOfLines to zero. so, what you can do is, comment the code within and return from function to stop doing the action. Also as the ReadMoreTextView is Licensed as MIT(Read licence here) so, it's okay to modify the code.
private func showMoreText() {
return
/*if let readLessText = readLessText, text.hasSuffix(readLessText) { return }
shouldTrim = false
textContainer.maximumNumberOfLines = 0
if let originalAttributedText = _originalAttributedText?.mutableCopy() as? NSMutableAttributedString {
attributedText = _originalAttributedText
let range = NSRange(location: 0, length: text.count)
if let attributedReadLessText = attributedReadLessText {
originalAttributedText.append(attributedReadLessText)
}
textStorage.replaceCharacters(in: range, with: originalAttributedText)
}
invalidateIntrinsicContentSize()
invokeOnSizeChangeIfNeeded()*/
}
Try and share your results.
Hope it helps!
How can I change the color of all text in a NSTextView? In the example below, myTextView.textColor = .white only changes color of Hello but not World. I don't want to specify the color every time when I append some text.
Also I'm not sure if this is an appropriate way appending text to NSTextView.
override func viewDidLoad() {
super.viewDidLoad()
myTextView.string = "Hello"
myTextView.backgroundColor = .black
myTextView.textColor = .white
logTextView.textStorage?.append(NSAttributedString(string: "World"))
}
NSTextStorage is a subclass of NSMutableAttributedString so you can manipulate it as a mutable attributed string.
If you want the new text to carry on the attributes at the end of the current text, append to the mutable string:
myTextView.textStorage?.mutableString.append("World")
If you want to add more attributes to the new text (for example, adding an underline), get the attributes at the end of the current text and manipulate the attributes dictionary:
guard let textStorage = myTextView.textStorage else {
return
}
var attributes = textStorage.attributes(at: textStorage.length - 1, effectiveRange: nil)
attributes[.underlineStyle] = NSNumber(value: NSUnderlineStyle.styleSingle.rawValue)
textStorage.append(NSAttributedString(string: "World", attributes: attributes))
After this, if you call mutableString.append, the new text will be in white and underlined.
cell!.textLabel?.text = vehicle["vrn"].string
cell?.detailTextLabel?.text = stateString
I want to display stateString as bold and also tried to use textLabel instead of detailedText but it did not work.
You can set the font property of the detailTextLabellike so:
cell.detailTextLabel?.font = UIFont.boldSystemFontOfSize(15.0)
You can use the font property inside the UILabel class.
// You need to set the name of your font here
cell.detailTextLabel?.font = UIFont(name:"HelveticaNeue-Bold", size: 16.0)
There are other options using the attributedText
property but implies a little more of code, something like this:
// Define attributes to set
let labelFont = UIFont(name: "HelveticaNeue-Bold", size: 16)
let attributes :Dictionary = [NSFontAttributeName : labelFont]
// Create the attributed string
var attrString = NSAttributedString(string: "textOfYourLabel", attributes:attributes)
cell.detailTextLabel?.attributedText = attrString
I hope this help you.
If you want to bold text label using story board, simply select SHADOW colour in attributes inspector to same of that Text colour. Its works for me try it....
I've got a series of buttons that all contain randomly generated letters (ie. Button one is Z, button 2 is X... and so on). When the user tap on a button, I want to grab the value of that button and create a new label with that value.
This is the code I have now
#IBAction func zeroB(sender : UIButton) {
buttonPress(sender) // highlight the button
var label = UILabel(frame: CGRectMake(0, 0, 250, 50))
label.text = "\(sender.currentTitle))"
label.font = UIFont.systemFontOfSize(26)
letterView.addSubview(label)
}
It creates a label, but the text in the label displays as Optional("Z")).
What am I missing?
I should add that i'm completely new to iOS programming. I'm making an app to teach myself.
Thanks.
Since currentTitle of a UIButton is an optional string, you would be getting the Optional(...) part.
If you know that the title has been set to a non-nil string, use exclamation point to unwrap it:
label.text = "\(sender.currentTitle!))"
This will produce Z) in the label (I am assuming that the extra closing parenthesis is not a typo, and you actually want it in the title of your label). If you do not want the extra parentheses after the title, use
label.text = sender.currentTitle!
current Title is an optional. You can extract the optional in one of two ways:
1)
let labelText = sender.currentTitle!
label.text = labelText
or 2)
if let labelText = sender.currentTitle {
label.text = labelText
}
How can I underline text in a UITextView. I understand that I would need to create a subclass of UITextView, but what would go under drawRect:?
Thanks.
Try to use NSAttributedString as follows and set in UITextView. This works for iOS6.
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:#"Some String"];
[attString addAttribute:(NSString*)kCTUnderlineStyleAttributeName
value:[NSNumber numberWithInt:kCTUnderlineStyleSingle]
range:(NSRange){0,[attString length]}];
For more info on NSAttributedString check this How do you use NSAttributedString?
For eg:-
textView.attributedText = attString;
From apple documentation on UITextView,
In iOS 6 and later, this class supports multiple text styles through
use of the attributedText property. (Styled text is not supported in
earlier versions of iOS.) Setting a value for this property causes the
text view to use the style information provided in the attributed
string. You can still use the font, textColor, and textAlignment
properties to set style attributes, but those properties apply to all
of the text in the text view.
attributedText:
The styled text displayed by the text view.
#property(nonatomic,copy) NSAttributedString *attributedText
Discussion: This property is nil by default. Assigning a new value to this property also replaces the value of the text property with the same string data, albeit without any formatting information. In addition, assigning a new a value updates the values in the font, textColor, and textAlignment properties so that they reflect the style information starting at location 0 in the attributed string.
If you want to avoid having to include CoreText, you can utilize an attributed string with this attribute:
#{NSUnderlineStyleAttributeName: #(NSUnderlineStyleSingle)}
If this is static text, you can underline it in Interface Builder. Make sure to make the text 'Attributed' first by selecting 'Attributed' in the drop down menu:
textViewMessage.linkTextAttributes = #{NSForegroundColorAttributeName: [UIColor blueColor], NSUnderlineStyleAttributeName: [NSNumber numberWithInt:NSUnderlineStyleSingle]};
If you want to format your text (with underlined words, links, colored words...) I suggest you to use FTCoreText
-(IBAction)underline:(id)sender
{
NSDictionary *underlineAttribute = #{NSUnderlineStyleAttributeName: #(NSUnderlineStyleSingle)};
texts.attributedText = [[NSAttributedString alloc] initWithString:texts.text
attributes:underlineAttribute];
}
You can't use "kCTUnderlineStyleAttributeName" or "kCTUnderlineStyleSingle"
Now you must do it like this:
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:#"Text"];
[attString addAttribute:NSUnderlineStyleAttributeName
value:#(NSUnderlineStyleSingle)
range:(NSRange){0,[attString length]}];
If you are using iOS 6 then you can use the attributedText attribute of UITextView. Apply underline formatting to the text. You can also set the typingAttributes property to ensure the text that the user types has a specific set of formatting if you wish.
I recommend you to use CoreText. A Basic tutorial is here on raywenderlich.
I recommend you to use MFUnderlinedTextView, it will be helpful.
This is how I did it using Swift 5:
let attributedString = NSMutableAttributedString(string: myTextView.text ?? "")
myTextView.linkTextAttributes = [NSAttributedString.Key(rawValue: NSAttributedString.Key.underlineStyle.rawValue): NSUnderlineStyle.single.rawValue] as [NSAttributedString.Key: Any]?
myTextView.attributedText = attributedString
Swift 5.
As my UITextView if for inserting text, I created an extension function as bellow.
extension UITextView {
func underlined() {
let border = CALayer()
let width = CGFloat(1.0)
border.borderColor = UIColor.lightGray.cgColor
border.frame = CGRect(x: 0, y: self.frame.size.height - 5, width: self.frame.size.width, height: 1)
border.borderWidth = width
self.layer.addSublayer(border)
self.layer.masksToBounds = true
let style = NSMutableParagraphStyle()
style.lineSpacing = 15
let attributes = [NSAttributedString.Key.paragraphStyle : style, NSAttributedString.Key.foregroundColor : UIColor.darkGray, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 13)]
self.attributedText = NSAttributedString(string: self.text, attributes: attributes)
}
}
The border is drawling the line and the style is adding the spacing between the lines.
Usage in your UIView custom layout:
override func layoutSubviews() {
super.layoutSubviews()
self.dateAndTimeInput.underlined()
}
Image with the result
let someString = NSMutableAttributedString(string: "Your String", attributes: [NSAttributedString.Key.font : UIFont.boldSystemFont(ofSize: 20), NSAttributedString.Key.underlineStyle : NSUnderlineStyle.single.rawValue])
someStringTextView.attributedText = titleAT
U can just give your string a bunch of attributes like bold, underlined etc.
To underline a text, you have to go where you can select copy, cut , delete options there are now more options like B/I/U( bold, italic, underline). Choose this option and this is it. And to unable it, choose underline option again.