iOS-sizeWithFont问题

Question

I have text "Testing of application". it looks line in cell is

"Tesing of 
 Application"

I want to add a Asteric right a text. for eg

"Tesing of *
Application"

but it show after the width of Label.. I have written the following code.

CGSize maximumLabelSize = CGSizeMake(99999,9999);

CGSize textSize = [[_label text] sizeWithFont:_label.font
                                 constrainedToSize:maximumLabelSize                                          lineBreakMode:_label.lineBreakMode];


float startX = 2 + textSize.width;
label2.frame = CGRectMake(startX, label2.frame.origin.y, label2.frame.size.width, label2.frame.size.height);

Answer 1

When you use constrainedToSize you have to pass the size with real height or real width.

Let say you have a label on 300px width and you want to make the height according to text length you have to use CGSizeMake(300,9999) . In this case the constrainedToSize method will return you the height need to draw that text.

For getting the width you can set a small height like 20px to get the width needed to draw the text.