出于某种原因，每当我尝试添加注释时，它们都不会自动显示。我已经指出了这个问题。这是因为此块之外的任何内容都不会在我的 ViewDidLoad 中执行。一旦运行此方法，我将如何做到这一点，然后在 ViewDidAppear 或 ViewDidLoad 中显示我的注释？
CLGeocoder *fgeo = [[CLGeocoder alloc] init];
[fgeo reverseGeocodeLocation:locationManager.location completionHandler:^(NSArray *placemarks, NSError *error) {
if (!error) {
CLPlacemark *placemark = [placemarks objectAtIndex:0];
zip = placemark.postalCode;
NSLog(@"%@", zip);
// Make the URL connection in order to download JSON/XML data.
NSString *stringSearch = @"http://api.onebigplanet.com/ws/local-daily-deals?wsToken= &wsVersion=3.0.0&numItems=20&out=json&categoryId=70&radiusInMiles=12&zipCode=";
NSString *combined = [NSString stringWithFormat:@"%@%@", stringSearch, zip];
NSLog(@"%@",combined);
NSURL *url = [NSURL URLWithString:combined];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
// Error and success message handling.
[NSURLConnection
sendAsynchronousRequest:urlRequest
queue:queue
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if([data length] > 0 &&
error == nil){
NSData *jsonData = data;
if (jsonData != nil){
NSError *error = nil;
self.result = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
if(error == nil)
self.mapLocations = result;
//NSLog(@"%@", result);
for (NSDictionary *location in self.mapLocations[@"merchants"]) {
for (NSDictionary *deals in self.mapLocations[@"deals"]){
for (NSDictionary *cats in deals[@"categories"]){
for (NSDictionary *locations in location[@"branches"]) {
NSLog(@"%@",locations);
mapView.delegate = self;
CLLocationCoordinate2D annotationCoordinate =
CLLocationCoordinate2DMake([locations[@"latitude"] doubleValue],
[locations[@"longitude"] doubleValue]);
Annotation *annotation = [[Annotation alloc] init];
annotation.coordinate = annotationCoordinate;
annotation.title = deals[@"title"];
annotation.subtitle = locations[@"street"];
annotation.phoneNumber = locations[@"telephone"];
annotation.description = deals[@"description"];
annotation.value1 = deals[@"value"];
annotation.discountPercent = deals[@"discountPercent"];
annotation.price = deals[@"price"];
annotation.dealy = deals;
annotation.url = deals[@"url"];
annotation.imageUrl = deals[@"imageUrl"];
annotation.iden = cats[@"id"];
[self.mapView addAnnotation:annotation];
}
}
}
}
}
else if ([data length] == 0 &&
error == nil){
NSLog(@"Nothing was downloaded");
}
else if (error != nil){
NSLog(@"Error happened = %@", error);
}
}
}];
}
}];