UIButton multi-line text with tail truncation

Question

I have found similar questions that ask how to have multi-line text on a UIButton, and the solution is to set

[myUIButton.titleLabel setLineBreakMode:UILineBreakModeWordWrap];
[myUIButton setTitle:myTitle forState:UIControlStateNormal];

However, this results in the button title taking up many lines. I have tried restricting the number of lines using

[myUIButton.titleLabel setNumberOfLines:2];

but this does not have any affect on the resulting number of lines.

Is there a way to limit the lines word wrapped to 2 lines on the UIButton title, and then have the tail truncated with "..."?

Answer 1

By setting lineBreakMode before numberOfLines your desired result can be achieved… This is because lineBreakMode seems to cancel out numberOfLines set hence we are doing it in this order.

Objective-C:

[button.titleLabel setLineBreakMode: UILineBreakModeTailTruncation];
[button.titleLabel setNumberOfLines:2];
[button setTitle:myTitle forState:UIControlStateNormal];

Swift 3: from Xcode 6 and above UILineBreakMode is replaced by NSLineBreakMode

button.titleLabel?.lineBreakMode = NSLineBreakMode.byTruncatingTail
button.titleLabel?.numberOfLines = 2
button.setTitle(myTitle, for: UIControlState.normal)