问题
I struggled in the past to have UILabel adjustsFontSizeToFitWidth working on multiline labels. I soon have found also here on stackoverflow that
adjustsFontSizeToFitWidth property "is effective only when the numberOfLines property is set to 1".
I remember that this was written in the official documentation. But now I can't find it anymore
I was testing my code on Xcode11 with the accessibility inspector to find out labels that needed to be embedded in scroll views. I found out a label that was showing a adjustsFontSizeToFitWidth behaviour even if it was displaying a multiline text. I inspected the "issue", and I have found out that I had this kind of configuration:
With this configuration using the maximum font size on the accessibility inspector I don't have this expected result (1):
But I instead have this (2):
It is possible to switch back to what was my expected result changing the lineBreakMode from NSLineBreakByTruncatingTail to NSLineBreakByWordWrapping (the standard setup I was using in my project)
Was I missing something? Was I wrong in expecting (1) from a multiline label with fixed width and height and adjustsFontSizeToFitWidth set to true? Is the behaviour (2) reliable, can I count on it? I can't understand it from the official documentation.
回答1:
You need to only set minimumScaleFactor/minimumFontSize to be the same font size as normal(usually its half of the label font size by default) to get the expected result.
来源：https://stackoverflow.com/questions/58566616/is-it-now-possible-to-have-multiline-uilabel-with-adjustsfontsizetofitwidth