iOS搜索指定字符在字符串中的位置

 1 NSString *tmpStr = @"asd341234aaaaccd";
 2
 3   NSRange range;
 4
 5   range = [tmpStr rangeOfString:@"ccd"];
 6
 7 if (range.location != NSNotFound) {
 8
 9       NSLog(@"found at location = %lu, length = %lu",(unsigned long)range.location,(unsigned long)range.length);
10
11 NSString *ok = [tmpStr substringFromIndex:range.location];
12
13       NSLog(@"%@",ok);
14
15   }else{
16
17       NSLog(@"Not Found");
18
19   }