ios - 循环应该运行 4 次，但只执行一次

Question

我正在制作一个基于地理定位的应用程序。这是我的代码:

-(void)gettingDataSQL {
    NSURL *url = [NSURL URLWithString:@"http://www.xxx.fr/xxx/xxx/script_xxx_localisation.php"];
    NSData *data = [NSData dataWithContentsOfURL:url];

    if (data != nil)
    {
        jsonArray = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];

        NSLog(@"jSonArrayCount = %i", [jsonArray count]);

        for (int i = 0; i<jsonArray.count; i++) {

            NSString *address = [[jsonArray objectAtIndex:i] objectForKey:@"adresse"];
            NSLog(@"address FROM JSON = %@", address);
            NSString *titre = [[jsonArray objectAtIndex:i] objectForKey:@"titre"];
            NSString *stringId = [[jsonArray objectAtIndex:i] objectForKey:@"id"];

            [geocoder geocodeAddressString:address completionHandler:^(NSArray* placemarks, NSError* error){

                // Check for returned placemarks
                if (placemarks && placemarks.count > 0) {
                    NSLog(@"if placemarks && placemarks.count");
                    CLPlacemark *topResult = [placemarks objectAtIndex:0];

                    MKPlacemark *placemark = [[MKPlacemark alloc]initWithPlacemark:topResult];
                  //  [self.mapViewOutlet addAnnotation:placemark];

                    NSLog(@"Placemark posé au longitude : %f et latitude : %f", placemark.location.coordinate.longitude, placemark.location.coordinate.latitude);

                    MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
                    annotation.coordinate = placemark.location.coordinate;
                    annotation.title = titre;
                    annotation.subtitle = stringId;

                    [mapViewOutlet addAnnotation:annotation];


                }
            }];


            NSLog(@"one placemark well defined via retrieveData:");
        }
    }
}

根据我所做的所有 NSLog，我了解到 for int 循环按预期被调用了 4 次，但是循环中的整个代码都没有被调用。

这部分循环只被调用一次，我不明白为什么:

[geocoder geocodeAddressString:address completionHandler:^(NSArray* placemarks, NSError* error){

                    // Check for returned placemarks
                    if (placemarks && placemarks.count > 0) {
                        NSLog(@"if placemarks && placemarks.count");
                        CLPlacemark *topResult = [placemarks objectAtIndex:0];

                        MKPlacemark *placemark = [[MKPlacemark alloc]initWithPlacemark:topResult];
                      //  [self.mapViewOutlet addAnnotation:placemark];

                        NSLog(@"Placemark posé au longitude : %f et latitude : %f", placemark.location.coordinate.longitude, placemark.location.coordinate.latitude);

                        MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
                        annotation.coordinate = placemark.location.coordinate;
                        annotation.title = titre;
                        annotation.subtitle = stringId;

                        [mapViewOutlet addAnnotation:annotation];


                    }
                }];

我想在 map 上创建多个注释 View ，而不是一个。我在数据库中有多个条目已下载，以便在 JsonArray 循环中的 map 上显示，但地理编码后的代码仅调用一次，因此它仅显示我的数据库的第一个条目。

有什么想法吗？

在此先感谢您的帮助和阅读；)我希望它能帮助其他遇到同样问题的人!

回答后

JSON 数组的日志:

2014-09-15 21:24:21.544 xxxx[1416:60b] (
        {
        adresse = "115 rue de reuilly";
        cree = "2014-07-13 21:03:23";
        description = "Venez boire!";
        icone = "icone_base.png";
        id = 1;
        "id_annonceur" = 1;
        "id_type" = 3;
        lat = "";
        lon = "";
        note = 0;
        portee = 25;
        titre = "La premiere Leffe gratuite!";
        validite = "";
        vues = 0;
    },
        {
        adresse = "107 rue de reuilly";
        cree = "2014-07-13 22:21:24";
        description = "Le Match n'est pas fini, profitez-en !";
        icone = "icone_base.png";
        id = 2;
        "id_annonceur" = 1;
        "id_type" = 3;
        lat = "";
        lon = "";
        note = 0;
        portee = 25;
        titre = "Karhu a -50%";
        validite = "";
        vues = 0;
    },
        {
        adresse = "Metropole de la Gare";
        cree = "2014-07-19 15:57:51";
        description = "Premier arrive, premier servi!";
        icone = "icone_base.png";
        id = 4;
        "id_annonceur" = 1;
        "id_type" = 1;
        lat = "";
        lon = "";
        note = 0;
        portee = 25;
        titre = "Le Mojito est gratuit!";
        validite = "";
        vues = 0;
    },
        {
        adresse = "2 rue de reuilly";
        cree = "2014-07-19 15:59:12";
        description = "Depechez-vous !";
        icone = "icone_base.png";
        id = 5;
        "id_annonceur" = 1;
        "id_type" = 1;
        lat = "";
        lon = "";
        note = 0;
        portee = 25;
        titre = "La dose du Martini doublee pour 1h!";
        validite = "";
        vues = 0;
    } 

Answer 1

“发起正向地理编码请求后，请勿尝试发起另一个正向或反向地理编码请求。”- 引用自 Apple 文档

https://developer.apple.com/Library/ios/documentation/CoreLocation/Reference/CLGeocoder_class/Reference/Reference.html#//apple_ref/occ/instm/CLGeocoder/geocodeAddressString:completionHandler :