Text field Validation for Password

Validation

-(BOOL)validation

{

    NSLog(@"lat %@",[AppDelegate sharedAppDelegate].latitud);

    if ([txt_username.text isEqualToString:@""])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:USERNAME_BLANK_MSG];

        return NO;

    }

    else if ([txt_email.text isEqualToString:@""])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:EMAIL_BLANK_MSG];

        return NO;

    }

    else if ([[ApplicationData sharedInstance]ValidEmail:txt_email.text] == NO)

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:EMAIL_MSG];

        return NO;

    }

    else if ([btn_Number.titleLabel.text isEqualToString:@"+0"])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:PHONENUMCO];

        return NO;

    }

    else if ([txt_Phonenum.text isEqualToString:@""])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:PHONENUM];

        return NO;

    }

    else if ([txt_password.text isEqualToString:@""])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:PASSWORD_BLANK_MSG];

        return NO;

    }

    else if ([txt_password.text length]<9)

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:PASSWORD_MSG];

        return NO;

    }

    else if ([txt_RePassword.text isEqualToString:@""])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:REPASSWORD_BLANK_MSG];

        return NO;

    }

    else if (![txt_RePassword.text isEqualToString:txt_password.text])

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:REPASSWORD_MSG];

        return NO;

    }

    else if (CheckUser == NO)

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:PROVIDERMSG];

        return NO;

    }

    else if (Terms == NO)

    {

        [[AppDelegate sharedAppDelegate] showAlertWithTitle:ERROR_HEADER message:TERMSMSG];

        return NO;

    }

    else if ([AppDelegate sharedAppDelegate].latitud == nil || [[AppDelegate sharedAppDelegate].latitud  isKindOfClass:[NSNull class]])

    {

        if (u_type == 1)

        {

            return YES;

        }

        else

        {

            [[AppDelegate sharedAppDelegate] showAlertWithTitle:AppPermission message:Location_MSG];

            return NO;

        }

        

    }

    

    return YES;

}