UILabel calculates the number of rows, expands the text, and shrinks the number of uilabel rows.

UILabel calculates the number of rows, expands the text, and shrinks the number of uilabel rows.

In iOS development, you sometimes need to obtain the number of lines of a string to implement specific functions. The following code is used to calculate the number of lines based on the string content and the display width of the string (that is, the label length ).

1. import # import <CoreText/CoreText. h>Header file

2. for project development, you need to add the expand button in the lower-right corner of the circle of friends content to avoid text obstruction. Then, you can process (intercept, splice, and so on) the differentiated string lines to get the content we need.