越努力.越幸福.----willingseal.
(一)连接两个字符串
NSString *type=[ self . type objectAtIndex:typeRow]; NSString *subtype=[self.subtypeobjectAtIndex:subtypeRow]; (1) NSString *typesub = [NSString stringWithFormat:@"%@>%@",type,subtype]; (2) NSString *typesub = [type stringByAppendingString:subtype]; (3) NSString *typesub = [type stringByAppendingFormat:@"%@>%@",type,subtype];
NSLog ( @"%@" ,typesub);
打印:(1) 交通 > 出租车费
(2) 交通出租车费
(3) 交通交通 > 出租车费
(二)连接三个字符串
NSString *a= @"abc" ;
NSString *typesub = [type stringByAppendingFormat : @"%@>%@>%@" ,type,subtype,a];
打印: 交通交通 > 出租车费 >abc