判断是否为有效电话号码的方法

/**

*
移动号段正则表达式

*/

NSString *CM_NUM =@"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))\\d{8}|(1705)\\d{7}$";

/**

*
联通号段正则表达式

*/

NSString *CU_NUM =@"^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))\\d{8}|(1709)\\d{7}$";

/**

*
电信号段正则表达式

*/

NSString *CT_NUM =@"^((133)|(153)|(177)|(18[0,1,9]))\\d{8}$";

NSPredicate *pred1 = [NSPredicatepredicateWithFormat:@"SELF
MATCHES %@", CM_NUM];

BOOL isMatch1 = [pred1evaluateWithObject:mobile];

NSPredicate *pred2 = [NSPredicatepredicateWithFormat:@"SELF
MATCHES %@", CU_NUM];

BOOL isMatch2 = [pred2evaluateWithObject:mobile];

NSPredicate *pred3 = [NSPredicatepredicateWithFormat:@"SELF
MATCHES %@", CT_NUM];

BOOL isMatch3 = [pred3evaluateWithObject:mobile];

if (isMatch1 || isMatch2 || isMatch3) {

returnnil;
}
else {

return@"请输入正确的电话号码";
}