I am adding text incrementally to a wrapping CATextLayer
in a UIScrollView
. Each time I add text, I need to add height to the textLayer and to the scrollView’s contentSize
, and adjust the scrollView’s contentOffset
.
(The user should be able to use the scrollView to review previous text, but when new text is added, I want to scroll down to it programmatically.)
UIKit’s sizeWithFont:
will treat the entire string as though it is on one line, so in order to calculate the height, I need to multiple the size.height returned by the number of lines, as produced by the textLayer’s wrapping.
Trouble is, if I access the string through the textLayer, it won’t contain any extra ‘\n’ or ‘\r’ characters to account for the wrapping.
Surely there is some way I can get the wrapping info? Perhaps dervied from superclass CALayer
somehow? Otherwise I’m stuck calculating my own line breaks.