这是我尝试的代码:NSString*strFirst=[NSStringstringWithFormat:@"TheAppfeatureisonlyavailabletouserswhileat"];NSString*strAreaName=kAreaName;NSRangeboldedRange=[strAreaNamerangeOfString:strAreaName];NSMutableAttributedString*newAttString=[[NSMutableAttributedStringalloc]initWithString:strFirst];NSMutableA