ios 同一label 局部字体加粗

富文本.png

这只是一个简单的demo，用相同的思路也可以构建炫酷的特效，这里就展示最容易的入门代码

代码如下：

• (void)viewDidLoad {
  [super viewDidLoad];

  UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 30, 300, 260)];
  label.text = @"Label Text Content, This is a text label things attribute";//默认为空
  label.font = [UIFont systemFontOfSize:17];//默认使用系统的17
  label.textColor = [UIColor orangeColor];//默认使用文本黑色
  label.textAlignment = NSTextAlignmentCenter;//默认是左对齐
  [self.view addSubview:label];

  NSString *string = label.text;
  const CGFloat fontSize = 16.0;
  NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:string];
  NSUInteger length = [string length];
  //设置字体
  UIFont *baseFont = [UIFont systemFontOfSize:fontSize];
  [attrString addAttribute:NSFontAttributeName value:baseFont range:NSMakeRange(0, length)];//设置所有的字体
  UIFont *boldFont = [UIFont boldSystemFontOfSize:fontSize];
  [attrString addAttribute:NSFontAttributeName value:boldFont range:[string rangeOfString:@"Text"]];//设置Text这四个字母的字体为粗体
  label.attributedText = attrString;

  // Do any additional setup after loading the view, typically from a nib.
  }
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