IOS 改变字体样式 **

1 import UIKit 2 import CoreText 3 4 class ViewController：UIViewController { 5 6 override func viewDidLoad() { 7 super.viewDidLoad() 8 // Do any additional setup after loading the view, typically from a nib. 9 10 let label = UILabel(frame：CGRect(x：10, y：60, width：300, height：40)) 11 let string = NSMutableAttributedString(string：“Interactive tutorials for Xcode”) 12 13 let font = CTFontCreateWithName(“CourierNewPSBoldMT” as CFString？, 22, nil) 14 string.addAttribute(kCTFontAttributeName as String, value：font, range：NSRange(location：0, length：11)) 15 16 var number = 3 17 let cfNumber = CFNumberCreate(kCFAllocatorDefault, CFNumberType.sInt8Type, &number) 18 string.addAttribute(kCTStrokeWidthAttributeName as String, value：cfNumber！, range： NSMakeRange(12, 9)) 19 20 let italicFont = UIFont.italicSystemFont(ofSize：14) 21 let fontValue = CTFontCreateWithName(italicFont.fontName as CFString？, 14, nil) 22 string.addAttribute(kCTFontAttributeName as String, value：fontValue, range： NSRange(location：22, length：3)) 23 24 string.addAttribute(kCTUnderlineStyleAttributeName as String, value：NSNumber(value：1), range： NSRange(location：26, length：5)) 25 26 label.attributedText = string 27 self.view.addSubview(label) 28 } 29 }

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