//判斷手機號碼格式是否正確+ (BOOL)valiMobile:(NSString *)mobile{  mobile = [mobile stringByReplacingOccurrencesOfString:@" "withString:@""];  if (mobile.length != 11)  {    return NO;  }else{    /**     * 移動號段正則表達式     */    NSString *CM_NUM = @"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))//d{8}|(1705)//d{7}$";    /**     * 聯通號段正則表達式     */    NSString *CU_NUM = @"^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))//d{8}|(1709)//d{7}$";    /**     * 電信號段正則表達式     */    NSString *CT_NUM = @"^((133)|(153)|(177)|(18[0,1,9]))//d{8}$";    NSPredicate *pred1 = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", CM_NUM];    BOOL isMatch1 = [pred1 evaluateWithObject:mobile];    NSPredicate *pred2 = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", CU_NUM];    BOOL isMatch2 = [pred2 evaluateWithObject:mobile];    NSPredicate *pred3 = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", CT_NUM];    BOOL isMatch3 = [pred3 evaluateWithObject:mobile];     if (isMatch1 || isMatch2 || isMatch3) {      return YES;    }else{      return NO;    }  }}