根据标签地址的结果隐藏文本

Question

在我的应用程序中，当用户按下按钮时，他的地址将显示在标签上。根据用户的位置，结果有时等于"(null)"。这种情况经常发生在地址的编号上。例如:*Infinite Loop (null), 95014 Cupertino, CA, United States*。我如何隐藏(null)，如果它出现?

NSLog(@"Resolving the Address");
    [geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
        NSLog(@"Found placemarks: %@, error: %@", placemarks, error);
        if (error == nil && [placemarks count] > 0) {
            placemark = [placemarks lastObject];
            _addressLabel.text = [NSString stringWithFormat:@"%@ %@n%@ %@n%@n%@",
                                 placemark.thoroughfare, placemark.subThoroughfare,
                                 placemark.postalCode, placemark.locality,
                                 placemark.administrativeArea,
                                 placemark.country];
        } else {
            NSLog(@"%@", error.debugDescription);
        }`
Thank you in advance.

Answer 1

试试这个

NSString *addressString = [NSString stringWithFormat:@"%@ %@n%@ %@n%@n%@",
                                 placemark.thoroughfare, placemark.subThoroughfare,
                                 placemark.postalCode, placemark.locality,
                                 placemark.administrativeArea,
                                 placemark.country];
_addressLabel.text = [addressString stringByReplacingOccurrencesOfString:@"(null)"
                                     withString:@""];