How to check if UILabel is truncated?
I have a UILabel that can be varying lengths depending on whether or not my app is running in portrait or landscape mode on an iPhone or iPad. When the text is too long to show on one line and it truncates I want the user to be able to press it and get a popup of the full text.
How can I check to see if the UILabel is truncating the text? Is it even possible? Right now I'm just checking for different lengths based on what mode I'm in but it does not work super well.
Answer
You can calculate the width of the string and see if the width is greater than label.bounds.size.width
NSString UIKit Additions has several methods for computing the size of the string with a specific font. However, if you have a minimumFontSize for your label that allows the system to shrink the text down to that size. You may want to use sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode: in that case.
CGSize size = [label.text sizeWithAttributes:@{NSFontAttributeName:label.font}];
if (size.width > label.bounds.size.width) {
...
}