1. CGFloat heih = 20;
   
2. 
   
3. NSString * cLabelString = @"       这是测试UILabel行间距的text。这是测试UILabel行间距的text。\n       这是测试UILabel行间距的text。\n       这是测试UILabel行间距的text。这是测试UILabel行间距的text。这是测试UILabel行间距的text。这是测试UILabel行间距的text。";
   
4. UILabel * cLabel = [[UILabel alloc]initWithFrame:CGRectMake(20, heih, 280, 200)];
   
5. cLabel.numberOfLines = 0;
   
6. cLabel.font = [UIFont fontWithName:fontName size:16];
   
7. cLabel.textColor = [UIColor grayColor];
   
8. 
   
9. NSMutableAttributedString * attributedString1 = [[NSMutableAttributedString alloc] initWithString:cLabelString];
   
10. NSMutableParagraphStyle * paragraphStyle1 = [[NSMutableParagraphStyle alloc] init];
    
11. [paragraphStyle1 setLineSpacing:8];
    
12. [attributedString1 addAttribute:NSParagraphStyleAttributeName value:paragraphStyle1 range:NSMakeRange(0, [cLabelString length])];
    
13. [cLabel setAttributedText:attributedString1];
    
14. [cLabel sizeToFit];
    
15. [self.view addSubview:cLabel];

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1. CGFloat heih = 20;
   
2. 
   
3. NSString * cLabelString = @"       这是测试UILabel行间距的text。这是测试UILabel行间距的text。\n       这是测试UILabel行间距的text。\n       这是测试UILabel行间距的text。这是测试UILabel行间距的text。这是测试UILabel行间距的text。这是测试UILabel行间距的text。";
   
4. UILabel * cLabel = [[UILabel alloc]initWithFrame:CGRectMake(20, heih, 280, 200)];
   
5. cLabel.numberOfLines = 0;
   
6. cLabel.font = [UIFont fontWithName:fontName size:16];
   
7. cLabel.textColor = [UIColor grayColor];
   
8. 
   
9. NSMutableAttributedString * attributedString1 = [[NSMutableAttributedString alloc] initWithString:cLabelString];
   
10. NSMutableParagraphStyle * paragraphStyle1 = [[NSMutableParagraphStyle alloc] init];
    
11. [paragraphStyle1 setLineSpacing:8];
    
12. [attributedString1 addAttribute:NSParagraphStyleAttributeName value:paragraphStyle1 range:NSMakeRange(0, [cLabelString length])];
    
13. [cLabel setAttributedText:attributedString1];
    
14. [cLabel sizeToFit];
    
15. [self.view addSubview:cLabel];

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