+ (BOOL)isValidIP:(NSString *)ipStr {
if (nil == ipStr) {
return NO;
}
NSArray *ipArray = [ipStr componentsSeparatedByString:@"."];
if (ipArray.count == 4) {
for (NSString *ipnumberStr in ipArray) {
if ([self isPureInt:ipnumberStr]) {
int ipnumber = [ipnumberStr intValue];
if (!(ipnumber>=0 && ipnumber<=255)) {
return NO;
}
}
}
return YES;
}
return NO;
}
//是否整形
+ (BOOL)isPureInt:(NSString*)string {
NSScanner* scan = [NSScanner scannerWithString:string];
int val;
return[scan scanInt:&val] && [scan isAtEnd];
}
//是否只含有数字
+ (BOOL)validateNumber:(NSString*)number {
BOOL res = YES;
NSCharacterSet* tmpSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789"];
int i = 0;
while (i < number.length) {
NSString * string = [number substringWithRange:NSMakeRange(i, 1)];
NSRange range = [string rangeOfCharacterFromSet:tmpSet];
if (range.length == 0) {
res = NO;
break;
}
i++;
}
return res;
}