單一label多顏色多字型

attributedlabel *label = [[attributedlabel alloc] initwithframe:cgrectmake(20, 20, 150, 40)];

// 注意！！一定要先給text賦值，然後再加屬性；
label.text = @"this is test ";
[self.view addsubview:label];
// 設定this為紅色
[label setcolor:[uicolor redcolor] fromindex:0 length:4];
// 設定is為黃色
[label setcolor:[uicolor yellowcolor] fromindex:5 length:2];
// 設定this字型為加粗16號字
[label setfont:[uifont boldsystemfontofsize:30] fromindex:0 length:4];
// 給this加上下劃線
[label setstyle:kctunderlinestyledouble fromindex:0 length:4];
label.backgroundcolor = [uicolor clearcolor];
attributedlabel *label2 = [[attributedlabel alloc] initwithframe:cgrectmake(20, 120, 250, 100)];
[self.view addsubview:label2];
[label2 setcolor:[uicolor bluecolor] fromindex:12 length:1];
label2.backgroundcolor = [uicolor clearcolor];

#import #import #import @inte***ce attributedlabel : uilabel

// 設定某段字的顏色
- (void)setcolor:(uicolor *)color fromindex:(nsinteger)location length:(nsinteger)length;
// 設定某段字的字型
- (void)setfont:(uifont *)font fromindex:(nsinteger)location length:(nsinteger)length;
// 設定某段字的風格
- (void)setstyle:(ctunderlinestyle)style fromindex:(nsinteger)location length:(nsinteger)length;
@end

#import "attributedlabel.h"

@inte***ce attributedlabel()
@property (nonatomic,retain)nsmutableattributedstring          *attstring;
@end
@implementation attributedlabel
@synthesize attstring = _attstring;
- (void)dealloc
- (id)initwithframe:(cgrect)frame
return self;
}- (void)drawrect:(cgrect)rect
- (void)settext:(nsstring *)textelse
}// 設定某段字的顏色
- (void)setcolor:(uicolor *)color fromindex:(nsinteger)location length:(nsinteger)length
[_attstring addattribute:(nsstring *)kctforegroundcolorattributename
value:(id)color.cgcolor
range:nsmakerange(location, length)];
}// 設定某段字的字型
- (void)setfont:(uifont *)font fromindex:(nsinteger)location length:(nsinteger)length
[_attstring addattribute:(nsstring *)kctfontattributename
value:(id)cfbridgingrelease(ctfontcreatewithname((cfstringref)font.fontname,
font.pointsize,
null))
range:nsmakerange(location, length)];
}// 設定某段字的風格
- (void)setstyle:(ctunderlinestyle)style fromindex:(nsinteger)location length:(nsinteger)length
[_attstring addattribute:(nsstring *)kctunderlinestyleattributename
value:(id)[nsnumber numberwithint:style]
range:nsmakerange(location, length)];}/*
// only override drawrect: if you perform custom drawing.
// an empty implementation adversely affects performance during animation.
- (void)drawrect:(cgrect)rect
*/@end

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