|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35 |
+(BOOL) isIPAdress :(NSString
*)ip{ NSArray
*array = [ip componentsSeparatedByString:@"."]; NSLog(@"number of array %ld",[array count]); for
(NSString
*sIP in array) { NSLog(@"%@",sIP); } BOOL
flag = YES; if
([array count] == 4) {//判断是否为四段 for
(int
i = 0; i<4; i++) { //判断是否由数字组成 const
char
*str = [array[i] cStringUsingEncoding:NSUTF8StringEncoding]; int
j = 0; while
(str[j] != ‘\0‘
) { if
(str[j] >= ‘0‘
&& str[j] <= ‘9‘) { j++; }else{ flag = NO; break; } } //判断ip是否在0-255范围中 if
(flag) { NSInteger
temp = [array[i] integerValue]; if
(temp < 0 || temp > 255) { flag = NO; break; } } } }else{ flag = NO; } return
flag;} |
原文：http://www.cnblogs.com/wei8/p/3539352.html