Calculate the height of text

Calculate the height of text
In two cases, the specified text has only 1 lines and multiple lines, and the size,options that can be written to return a string usually use nsstringdrawinguseslinefragmentorigin, so that the entire text will calculate the entire text height as a single-line text rectangle

① Text Display Line

-(Cgsize) Sizeonelinetext: (NSString *) text font: (Uifont *) font{    = [text boundingrectwithsize: Cgsizemake (Cgfloat_max, Cgfloat_max)                                         options:nsstringdrawinguseslinefragmentorigin                                      attributes:@{ Nsfontattributename:font}                                         context:nil].size;     return textSize;}

② text display multiple lines, you need to specify the text width

-(Cgsize) Sizemultilinetext: (NSString *) text font: (Uifont *) Font width: (cgfloat) width{    = [text Boundingrectwithsize:cgsizemake (width, cgfloat_max)                                     Options:nsstringdrawinguseslinefragmentorigin                                  Attributes:@{nsfontattributename:font}                                     context:nil].size;     return textSize;}

This method can be used within a custom button to calculate the position of text and image

Calculate the height of text