我正在尝试解析来自 Google 的 JSON 以在 Map 上放置注释。使用 AFNetworking 解析 JSON 和解析过程在 Singleton 类中。我从两个不同的 JSON 中获取值。
- Google 的地方自动填充 JSON
- Google 的地点详情 JSON
这是我的单例类代码
-(void)getData:(NSString *)searchString
{
_dataArray = [[NSMutableArray alloc]init];
NSString *requestString = [[NSString alloc]init];
requestString = [NSString stringWithFormat:@"https://maps.googleapis.com/maps/api/place/autocomplete/json?input=%@&sensor=true&key=APIKEY",searchString];
requestString = [requestString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *URL = [NSURL URLWithString:requestString];
NSURLRequest *requestURL = [NSURLRequest requestWithURL:URL];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:requestURL success:^(NSURLRequest *requestURL,NSHTTPURLResponse *response, id JSON){
self.dataArray = [JSON objectForKey:@"predictions"];
[[NSNotificationCenter defaultCenter]postNotificationName:@"Doreload" object:nil];
}failure:^(NSURLRequest *requestURL,NSHTTPURLResponse *response,NSError *error, id JSON){
NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
}];
[operation start];
}
-(void)detailList:(NSString *)referenceString
{
_detailArray = [[NSMutableArray alloc]init];
NSString *requestString = [[NSString alloc]initWithFormat:@"https://maps.googleapis.com/maps/api/place/details/json?reference=%@&sensor=true&key=APIKEY",referenceString];
NSURL *URL = [NSURL URLWithString:requestString];
NSURLRequest *requestURL = [NSURLRequest requestWithURL:URL];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:requestURL success:^(NSURLRequest *requestURL,NSHTTPURLResponse *response, id JSON){
self.detailArray = [JSON objectForKey:@"result"];
[[NSNotificationCenter defaultCenter]postNotificationName:@"showList" object:nil];
}failure:^(NSURLRequest *requestURL,NSHTTPURLResponse *response,NSError *error, id JSON){
}];
[operation start];
}
在具有第一个函数的 ViewController 中，我在 tableView 中传递 Place 的名称：
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
sharedRequest = [RequestHandler sharedRquest];
static NSString *cellID = @"Cell Identifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
}
cell.textLabel.text = [[sharedRequest.dataArray objectAtIndex:indexPath.row]objectForKey:@"description"];
[_spinner stopAnimating];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
DetailViewController *details = [[DetailViewController alloc]initWithNibName:@"DetailViewController" bundle:nil];
details.stringReference = [[sharedRequest.dataArray objectAtIndex:indexPath.row]objectForKey:@"reference"];
[self.navigationController pushViewController:details animated:YES];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
详细信息类是：
- (void)viewDidLoad
{
[super viewDidLoad];
[[RequestHandler sharedRquest]detailList:self.stringReference];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(showOnMap) name:@"showList" object:nil];
self.spinner = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
self.spinner.hidesWhenStopped = YES;
self.spinner.frame = CGRectMake(0, 0, 320, 480);
[self.view addSubview:_spinner];
[_spinner startAnimating];
self.mapView.showsUserLocation = TRUE;
self.mapView.delegate = self;
}
- (void)showOnMap:(NSNotification *)notification
{
NSLog(@"Entered");
sharedRequest = [RequestHandler sharedRquest];
NSString *string = [[NSString alloc]init];
string = [sharedRequest.detailArray valueForKey:@"name"];
self.label.text = string;
}
-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
sharedRequest = [RequestHandler sharedRquest];
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(userLocation.coordinate, 30000, 30000);
[self.mapView setRegion:[self.mapView regionThatFits:region] animated:YES];
double latitude = [[[[sharedRequest.detailArray valueForKey:@"geometry"]objectForKey:@"location"]objectForKey:@"lat"]doubleValue];
double longitude =[[[[sharedRequest.detailArray valueForKey:@"geometry"]objectForKey:@"location"]objectForKey:@"lng"]doubleValue];
CLLocationCoordinate2D coord = { latitude, longitude };
MKPointAnnotation *point = [[MKPointAnnotation alloc]init];
point.coordinate = coord;
point.title = [sharedRequest.detailArray valueForKey:@"name"];
[self.mapView addAnnotation:point];
[_spinner stopAnimating];
}
问题第一次出现在详细信息类中，当使用断点时，它显示注释，然后出现错误：
-[__NSArrayI objectForKey:]: unrecognized selector sent to instance 0x86332e0
编辑：
这是 shared.detailArray 的内容：
"address_components" = (
{
"long_name" = Francestown;
"short_name" = Francestown;
types = (
locality,
political
);
},
{
"long_name" = Hillsborough;
"short_name" = Hillsborough;
types = (
"administrative_area_level_2",
political
);
},
{
"long_name" = "New Hampshire";
"short_name" = NH;
types = (
"administrative_area_level_1",
political
);
},
{
"long_name" = "United States";
"short_name" = US;
types = (
country,
political
);
}
);
"adr_address" = "<span class=\"locality\">Francestown</span>, <span class=\"region\">NH</span>, <span class=\"country-name\">USA</span>";
"formatted_address" = "Francestown, NH, USA";
geometry = {
location = {
lat = "42.9875";
lng = "-71.8130599";
};
viewport = {
northeast = {
lat = "43.03844";
lng = "-71.7474139";
};
southwest = {
lat = "42.949703";
lng = "-71.88583609999999";
};
};
};
icon = "http://maps.gstatic.com/mapfiles/place_api/icons/geocode-71.png";
id = ccd239475516163d29405af62fb286bedb4c6377;
name = Francestown;
reference = "CoQBcwAAAPSQxzNrepzPywLZr1PDoPEmQmGR8rIPTPoQ_f2kXpceRGHU_J_FEcrDxZSzebqLRpNYlUC_-xRJVV7Jx_mW1KJ33foU9y0ZCNK_kC1orqZVK5B-EONPD_Ef_e9WXXZdfOZTBQzNYLhoVdP8Ufa1bPe_vuuwe3rqYtf80IyANb8mEhCKi6kISip4ItpBFfgWjuGvGhSj0hURZaTQXX4lnFlxe2v4O5Uo6Q";
types = (
locality,
political
);
url = "https://maps.google.com/maps/place?q=Francestown&ftid=0x89e22c36ba6dc937:0x52cccc5f0f9b8663";
vicinity = Francestown;
}
我尝试了很多来理解错误，但都是徒劳的。
任何帮助都是不言而喻的。
谢谢