Returns the size of the string if it were to be rendered with the specified font on a single line.
Deprecation Statement
Use sizeWithAttributes: instead.
Declaration
OBJECTIVE-C
- (CGSize)sizeWithFont:(UIFont *)font
Parameters
fontThe font to use for computing the string size.
Return Value
The width and height of the resulting string’s bounding box. These values may be rounded up to the nearest whole number.
Discussion
You can use this method to obtain the layout metrics you need to draw a string in your user interface. This method does not actually draw the string or alter the receiver’s text in any way.
In iOS 6, this method wraps text using the NSLineBreakByWordWrapping option by default. In earlier versions of iOS, this method does not perform any line wrapping and returns the absolute width and height of the string using the specified font.
Availability
Available in iOS 2.0 and later.
Deprecated in iOS 7.0.
注意 sizeWithFont: 方法只在版本 7.0 以前使用。