首先在UITextField代理中
- (void)textFieldDidEndEditing:(UITextField *)textField方法里设置
- (void)textFieldDidEndEditing:(UITextField *)textField;{
if (self.IDCardNoField == textField) {
NSCharacterSet *setToRemove = [[ NSCharacterSet characterSetWithCharactersInString:@"0123456789X"]
invertedSet ];
self.IDCardNoField.text = [[self.IDCardNoField.text componentsSeparatedByCharactersInSet:setToRemove] componentsJoinedByString:@""];
}
}
这会让你在编辑结束后将非省份证号包含的字符消除掉
判断身份证号是否合法
百度上搜到的方法是,但判断强度很鸡肋
- (BOOL)isCorrect:(NSString *)IDNumber
{
NSMutableArray *IDArray = [NSMutableArray array];
// 遍历身份证字符串,存入数组中
for (int i = 0; i < 18; i++) {
NSRange range = NSMakeRange(i, 1);
NSString *subString = [IDNumber substringWithRange:range];
[IDArray addObject:subString];
}
// 系数数组
NSArray *coefficientArray = [NSArray arrayWithObjects:@"7", @"9", @"10", @"5", @"8", @"4", @"2", @"1", @"6", @"3", @"7", @"9", @"10", @"5", @"8", @"4", @"2", nil];
// 余数数组
NSArray *remainderArray = [NSArray arrayWithObjects:@"1", @"0", @"X", @"9", @"8", @"7", @"6", @"5", @"4", @"3", @"2", nil];
// 每一位身份证号码和对应系数相乘之后相加所得的和
int sum = 0;
for (int i = 0; i < 17; i++) {
int coefficient = [coefficientArray[i] intValue];
int ID = [IDArray[i] intValue];
sum += coefficient * ID;
}
// 这个和除以11的余数对应的数
NSString *str = remainderArray[(sum % 11)];
// 身份证号码最后一位
NSString *string = [IDNumber substringFromIndex:17];
// 如果这个数字和身份证最后一位相同,则符合国家标准,返回YES
if ([str isEqualToString:string]) {
return YES;
} else {
return NO;
}
}
下面附上我的方法(在原有的基础上加了)
- (BOOL)isCorrect:(NSString *)IDNumber
{
if (IDNumber.length<18) {
return NO;
}
NSMutableArray *IDArray = [NSMutableArray array];
// 遍历身份证字符串,存入数组中
for (int i = 0; i < 18; i++) {
NSRange range = NSMakeRange(i, 1);
NSString *subString = [IDNumber substringWithRange:range];
[IDArray addObject:subString];
}
// 系数数组
NSArray *coefficientArray = [NSArray arrayWithObjects:@"7", @"9", @"10", @"5", @"8", @"4", @"2", @"1", @"6", @"3", @"7", @"9", @"10", @"5", @"8", @"4", @"2", nil];
// 余数数组
NSArray *remainderArray = [NSArray arrayWithObjects:@"1", @"0", @"X", @"9", @"8", @"7", @"6", @"5", @"4", @"3", @"2", nil];
// 每一位身份证号码和对应系数相乘之后相加所得的和
int sum = 0;
for (int i = 0; i < 17; i++) {
int coefficient = [coefficientArray[i] intValue];
int ID = [IDArray[i] intValue];
sum += coefficient * ID;
}
// 这个和除以11的余数对应的数
NSString *str = remainderArray[(sum % 11)];
// 身份证号码最后一位
NSString *string = [IDNumber substringFromIndex:17];
// 如果这个数字和身份证最后一位相同,则符合国家标准,返回YES
if ([str isEqualToString:string]) {
NSString *birthdayYer = [IDNumber substringWithRange:NSMakeRange(6, 4)];
NSString *birthdayMan = [IDNumber substringWithRange:NSMakeRange(10, 2)];
NSString *birthdayDay = [IDNumber substringWithRange:NSMakeRange(12, 2)];
if ([birthdayYer intValue]<1900||[birthdayMan intValue]==0||[birthdayMan intValue]>12||[birthdayDay intValue]==1||[birthdayDay intValue]>31) {
return NO;
}
return YES;
} else {
return NO;
}
}
！注意！注意！注意！注意（正确返回YES）
如果提交表单时检验 帖下面代码
if (![self checkCardNo:self.IDCardNoField.text]) {
[self showHudStringAlert:@"请输入正确银行卡号"];
return;
}
谢谢！
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