IOS computing text height

1. 
   
2. In iOS, you often need to dynamically specify the uilabel, uitextview, uitableviewcell, and other heights Based on the string content. In this case, you need to dynamically calculate the height of the string content, the calculation method is as follows:
3. /**
4. @ Method: gets the IXA of the specified width and the height of the string value.
5. @ Param value the string to be calculated
6. @ Param fontsize font size
7. @ Param andwidth: Limit the width of the string display area.
8. @ Result float return height
9. */
10. -(Float) heightforstring :( nsstring *) value fontsize :( float) fontsize andwidth :( float) Width
11. {
12. Cgsize sizetofit = [value sizewithfont: [uifont systemfontofsize: fontsize] rows: cgsizemake (width, cgfloat_max) linebreakmode: rows]; // line feed type (linebreakmode) you can set it based on your actual situation.
13. Return sizetofit. height;
14. }