Dynamic determination of Uilabel width and height based on character length

IOS7 uses the following methods

-(cgsize) sizewithattributes: (nsdictionary *) attrs;

Alternative to obsolete iOS6 -(cgsize) Sizewithfont: (uifont *) Font method

1 //ios7_api_ dynamically determine label width based on word count2 3     4     //sets the font of the label Helveticaneue Courier5Uifont *fnt = [Uifont fontwithname:@"Helveticaneue"Size24.0f];6_namelabel.font =fnt;7     //get nsstring size according to the font8Cgsize size =[_namelabel.text sizewithattributes:[nsdictionary dictionarywithobjectsandkeys:fnt,nsfontattributename, Nil]] ;9     //the H of the nameTenCGFloat Nameh =Size.Height; One     //W of the name ACGFloat Namew =Size.width; -_namelabel.frame = CGRectMake (0,0, Namew,nameh);

IOS7 uses the following method BoundingRectWithSize:options:attributes:context: instead of Sizewithfont in obsolete iOS6 : Constrainedtosize:linebreakmode: method

1 //4, based on the content of the text, dynamically determine the contents of the frame2     3     //width W4CGFloat contentw = self.bounds.size.width-_content.frame.origin.x-Kmargin;5     //the font of the label Helveticaneue Courier6Uifont *fnt = [Uifont fontwithname:@"Helveticaneue"Size18.0f];7_content.font =fnt;8_content.numberoflines =0;9_content.linebreakmode =nslinebreakbywordwrapping;Ten     //IOS7 replaces SizeWithFont:constrainedToSize:lineBreakMode in obsolete iOS6 using the following methods: OneCGRect tmprect = [_content.text boundingrectwithsize:cgsizemake (CONTENTW, +) Options:nsstringdrawinguseslinefragmentorigin attributes:[nsdictionary dictionarywithobjectsandkeys:fnt, Nsfontattributename, nil] context:nil]; A      -     //height H -CGFloat Contenth =TmpRect.size.height; theNSLog (@"adjusted display width:%f, display height:%f"contentw,contenth); -_content.frame = CGRectMake (0,0, Contentw,contenth);

Dynamic determination of Uilabel width and height based on character length