I created a view controller with a webView in the storyboard called GoogleSearchController. The property for the webView was, of course, declared in the GoogleSearchController.

I am attempting to access the synthesized webView property, which is *googleWebView, within the MapViewController, so that I can append my point annotations to a google search. The output here is correct. I'm getting the appended and desired URL, but I'm failing to actually load it. At the end of the leftButtonAnnotationPressed method, you will notice I try to call loadRequest on self.classObj.googleWebView. Something is not going as it should. This is the first time I've tried to use @synthesize, and I'm open to all suggestions.

My question comes in two parts. A: am I using @synthesize as it is intended? and B: If this is the proper use, why won't my webView load the request?

GoogleSearchController.h

 @interface GoogleSearchController : UIViewController <UIWebViewDelegate>

 @property (strong, nonatomic) IBOutlet UIWebView *googleWebView;

 @end

GoogleSearchController.m

@synthesize googleWebView;

- (void)viewDidLoad {
    [super viewDidLoad];

    self.googleWebView = [[UIWebView alloc] init];
    self.googleWebView.delegate = self;
}

MapViewController.m

@property (nonatomic, strong) GoogleSearchController *classObj;

-(void)leftButtonAnnotationPressed:(UIButton *)sender {
[self performSegueWithIdentifier:@"googleSearch" sender:nil];
self.classObj = [[GoogleSearchController alloc] init]; <--------

MKPointAnnotation *annotation = [self.mapView.selectedAnnotations objectAtIndex:([self.mapView.selectedAnnotations count]) -1];
NSString *appendString = annotation.title;
NSString *googleString = @"http://www.google.com/search?q=";
NSString *appendedUrlString = [googleString stringByAppendingString:appendString];

if ([appendedUrlString containsString:@" "]) {
    appendedUrlString = [appendedUrlString stringByReplacingOccurrencesOfString:@" " withString:@"+"];

    NSURL *url = [NSURL URLWithString:appendedUrlString];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [self.classObj.googleWebView loadRequest:request];<------

    NSLog(@"appended string: %@", request);

}

Storing the NSURLRequest in a data source seemed to be a fairly simple solution. In DataSource.h, all we did was declare a public property of type NSURLRequest *searchURL.

+(instancetype) sharedInstance;

@property (nonatomic, strong) NSURLRequest *searchURL;

The sharedInstance is going to be used for our singleton pattern, which ensures we only get one instance of our DataSource. In DataSource.m, we'll implement our sharedInstance like this: (which for the post part is text book).

+ (instancetype) sharedInstance {
    static dispatch_once_t once;
    static id sharedInstance;
    dispatch_once(&once, ^{
        sharedInstance = [[self alloc] init];
    });

    return sharedInstance;
}

That's all we need to store our NSURLRequest.

Within the MapViewController we use our sharedInstance to access the NSURLRequest property from within the DataSource and set it equal to the appended NSURLRequest.

- (void) leftAnnotationButtonPressed:(UIButton *)sender {

        MKPointAnnotation *annotation = [self.mapView.selectedAnnotations objectAtIndex:([self.mapView.selectedAnnotations count]) -1];
        NSString *appendString = annotation.title;
        NSString *googleString = @"http://www.google.com/search?q=";
        NSString *appendedUrlString = [googleString stringByAppendingString:appendString];

        if ([appendedUrlString containsString:@" "]) {
            appendedUrlString = [appendedUrlString stringByReplacingOccurrencesOfString:@" " withString:@"+"];

            NSURL *url = [NSURL URLWithString:appendedUrlString];
            NSURLRequest *request = [NSURLRequest requestWithURL:url];
            [DataSource sharedInstance].searchURL = request;  <----
            NSLog(@"appended string: %@", request);
        }

        [self performSegueWithIdentifier:@"googleSearch" sender:nil];
}

All that is left is to load the webView. This can be done in view did load in the GoogleSearchController where this property resides. (which removes all of the headache).

- (void)viewDidLoad {
    [super viewDidLoad];

    [self.googleWebView loadRequest:[DataSource sharedInstance].searchURL];
}

All we are doing here is simply calling loadRequest on our webView with the NSURLRequest that is now stored in our DataSource. And we are finished. I love this approach, and I hope anybody else reading this does to. You even get a little lesson on singletons and a data source.