CODEWITHSUNDEEP
iosobjective-cswiftcocoa-touchuilabel
FS.O5
FS.O5

Reputation: 297

Calculate where text starts on centre alignment

I have a UILabel that I want to add a UIView exactly where the text starts.

The problem is that the text in the label is aligned to the centre so I don't know how to determinate where the actual text starts and where to position this UIView.

Any idea how can I calculate this thing?

Thank you!

Upvotes: 4

Views: 595

Answers (4)

derdida
derdida

Reputation: 14904

You could also use 

yourLabel.sizeToFit()

to automatically resize your label for the space it needs. And then read out the frame of your label with:

yourLabel.frame.size (width or height)

Upvotes: 0

DSAjith
DSAjith

Reputation: 362

you can get text size using "nsattributedstring" 

let label = UILabel(frame: CGRectMake(0, 0, 100, 100))
label.text = "dshfk,j"
label.textAlignment = .Center
label.textColor = UIColor.redColor()

let string = label.attributedText
let width = string!.size().width
let height = string!.size().height

let view = UIView(frame: CGRectMake(width, height, width, height))
view.backgroundColor = UIColor.blackColor()

then you can find rect using this ..

sample view

enter image description here

Upvotes: 1

Prashant Tukadiya
Prashant Tukadiya

Reputation: 16466

From :How to find the position(x,y) of a letter in UILabel

NSRange range = [@"Good,Morning" rangeOfString:@","];
NSString *prefix = [@"Good,Morning" substringToIndex:range.location];
CGSize size = [prefix sizeWithFont:[UIFont systemFontOfSize:18]];
CGPoint p = CGPointMake(size.width, 0);
NSLog(@"p.x: %f",p.x);
NSLog(@"p.y: %f",p.y);

you can modify it for your purpose

Upvotes: 1

Marco Santarossa
Marco Santarossa

Reputation: 4066

You can use a UIView container which will wrap the UILabel and your new UIView. Then you can let the UILabel decides the width depending on its content and set it in the center of the container. Once you have this working you can just read the UILabel x to understand where it starts.

enter image description here

so the UILabel will have the constraints to top, bottom, the height you want and at center to horizontal whereas the little UIView to top, bottom, height, width and leading equal to UILabel

Upvotes: 1

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