iOS dynamically calculates the label's wide height

1. Calculate the width of the label according to the text

 1  + (cgfloat) widthofstring: (NSString *)  font: (uifont * 2  { 3  nsdictionary * Dict=[nsdictionary Dictionarywithobject:font Forkey:nsfontattributename];  4  cgrect rect=[string  Boundingrectwithsize:cgsizemake (Cgfloat_max, height) options:nsstringdrawingtruncateslastvisibleline| Nsstringdrawingusesfontleading| nsstringdrawinguseslinefragmentorigin attributes:dict Context:nil];  5  return   Rect.size.width;  6 } 

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2. Calculate the height of the label according to the text

2.1 Method One: Sizethatfits

For example: cgsize size = [Toollabel sizethatfits:cgsizemake ([UIScreen mainscreen].bounds.size.width, MAXFLOAT)];

The size.height you get is the label's height.

2.2 Method Two:

+ (CGFloat) heightofstring: (NSString *)string font: (Uifont *) Font width: (cgfloat) width{    CGRect bounds;     * parameterdict=[nsdictionary dictionarywithobject:font forkey:nsfontattributename];    Bounds=[string boundingrectwithsize:cgsizemake (width, cgfloat_max) options: nsstringdrawingtruncateslastvisibleline| Nsstringdrawingusesfontleading| nsstringdrawinguseslinefragmentorigin attributes:parameterdict Context:nil];     return bounds.size.height;}

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iOS dynamically calculates the label's wide height