IOS疯狂基础之输入限制—手机号，金额

#define
myDotNumbers @"0123456789.\n"

#define myNumbers @"0123456789\n"

以下代码放在

shouldChangeCharactersInRange 代理方法中 可以限制金额格式 6位整数 2位小数

//====================================================================

if ([string
isEqualToString:@"\n"]||[string
isEqualToString:@""]) {//按下return

return YES;
}

NSCharacterSet *cs;

NSUInteger nDotLoc = [textField.text
rangeOfString:@"."].location;

if (NSNotFound == nDotLoc &&
0 != range.location) {
cs = [[NSCharacterSetcharacterSetWithCharactersInString:myNumbers]invertedSet];

if ([string isEqualToString:@"."]) {

return YES;
}

if (textField.text.length>=6) { //小数点前面6位

return NO;
}
}

else {
cs = [[NSCharacterSetcharacterSetWithCharactersInString:myDotNumbers]invertedSet];

if (textField.text.length>=9) {

return NO;
}
}
NSString *filtered = [[stringcomponentsSeparatedByCharactersInSet:cs]
componentsJoinedByString:@""];

BOOL basicTest = [string isEqualToString:filtered];

if (!basicTest) {

return NO;
}

if (NSNotFound != nDotLoc && range.location > nDotLoc +2) {//小数点后面两位

return NO;
}
return
YES;

//====================================================================

///// 手机号码的有效性判断

//检测是否是手机号码

- (BOOL)isMobileNumber:(NSString *)mobileNum

{

/**

* 手机号码

* 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188

* 联通：130,131,132,152,155,156,185,186

* 电信：133,1349,153,180,189

*/

NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";

/**

10 * 中国移动：China Mobile

11 * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188

12 */

NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";

/**

15 * 中国联通：China Unicom

16 * 130,131,132,152,155,156,185,186

17 */

NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";

/**

20 * 中国电信：China Telecom

21 * 133,1349,153,180,189

22 */

NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";

/**

25 * 大陆地区固话及小灵通

26 * 区号：010,020,021,022,023,024,025,027,028,029

27 * 号码：七位或八位

28 */

// NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";

NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", MOBILE];

NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", CM];

NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", CU];

NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", CT];

if (([regextestmobile
evaluateWithObject:mobileNum] == YES)

|| ([regextestcm
evaluateWithObject:mobileNum] == YES)

|| ([regextestct
evaluateWithObject:mobileNum] == YES)

|| ([regextestcu
evaluateWithObject:mobileNum] == YES))

{

return YES;

}

else

{

return NO;

}

}

//////// 特殊字符的限制输入，价格金额的有效性判断

#define myDotNumbers @"0123456789.\n"

#define myNumbers @"0123456789\n"

-(void) createTextFiled {

textfield1_ = [[UITextField
alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];

textfield1_.delegate = self;

[self
addSubview:textfield1_];

textfield2_ = [[UITextField
alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];

textfield2_.delegate = self;

[self
addSubview:textfield2_];

textfield3_ = [[UITextField
alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];

textfield3_.delegate = self;

[self
addSubview:textfield3_];

}

-(void)showMyMessage:(NSString*)aInfo {

UIAlertView *alertView = [[UIAlertView
alloc] initWithTitle:@"提示" message:aInfo
delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];

[alertView
show];

[alertView
release];

}

- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)string {

NSCharacterSet *cs;

if ([textField
isEqual:textfield1_]) {

cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];

NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];

BOOL basicTest = [string isEqualToString:filtered];

if (!basicTest) {

[self
showMyMessage:@"只能输入数字"];

return NO;

}

}

else if ([textField
isEqual:textfield2_]) {

cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];

NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];

BOOL basicTest = [string isEqualToString:filtered];

if (!basicTest) {

[self
showMyMessage:@"只能输入数字"];

return NO;

}

}

else if ([textField
isEqual:textfield3_]) {

NSUInteger nDotLoc = [textField.text
rangeOfString:@"."].location;

if (NSNotFound == nDotLoc && 0 != range.location) {

cs = [[NSCharacterSet characterSetWithCharactersInString:myDotNumbers] invertedSet];

}

else {

cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];

}

NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];

BOOL basicTest = [string isEqualToString:filtered];

if (!basicTest) {

[self
showMyMessage:@"只能输入数字和小数点"];

return NO;

}

if (NSNotFound != nDotLoc && range.location
> nDotLoc + 3) {

[self
showMyMessage:@"小数点后最多三位"];

return NO;

}

}

return YES;

}