iOS 在UILabel显示不同的字体和颜色

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@interface ViewController
: UIViewController

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@property (nonatomic, strong) IBOutlet UILabel *attrLabel;

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- (IBAction)next:(id)sender;

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@end

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self.title = @

"For
iOS 6 & later"

;

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NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@

"Using
NSAttributed String"

];

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[str addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0,5)];

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[str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(6,12)];

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[str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(19,6)];

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[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@

"Arial-BoldItalicMT"

size:30.0]
range:NSMakeRange(0, 5)];

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[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@

"HelveticaNeue-Bold"

size:30.0]
range:NSMakeRange(6, 12)];

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[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@

"Courier-BoldOblique"

size:30.0]
range:NSMakeRange(19, 6)];

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attrLabel.attributedText = str;