Remark:
Implementing:
myLabel.textAlignment = .right
does not solves my problem, that is not what I am asking for.
What I am trying to achieve is to let the alignment for the label to be Right-Justify.
To make it more clear:
That's how left
alignment looks:
And that's how justify
alignment looks:
if you are not seeing any difference between the tow screenshots, you could recognize it by the right (trailing) constraint of the label, you will notice in the second screenshot the whole width of the label has been filled by the text.
As shown in the second screenshot, letting the label to be justified will make it Left-Justify by default, i.e the last line alignment is left
.
How can I make let the label to be justified to the right? In other words, I want the text to be just like the 2nd screenshot except that I want the last short line to be shifted to the right.
If you wondering what is the purpose of doing such a thing, it would be appropriate for right to left languages.
Thanks to @user6788419 for mentioning the appropriate answer.
For achieving it, you should work with NSMutableParagraphStyle:
An object that enables changing the values of the subattributes in a paragraph style attribute.
It gives you the ability to the alignment
and baseWritingDirection
simultaneously, which leads to the desired output:
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var lblDescription: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
let text: NSMutableAttributedString = NSMutableAttributedString(string: "In vertebrates, it is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), and contains dissipated proteins...")
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .justified
paragraphStyle.baseWritingDirection = .rightToLeft
paragraphStyle.lineBreakMode = .byWordWrapping
text.addAttribute(NSAttributedString.Key.paragraphStyle, value: paragraphStyle, range: NSMakeRange(0, text.length))
lblDescription.attributedText = text
}
}
The output would be: