Question

必须有一个简单的方法来执行此操作或某个地方我出错了但是我似乎无法将当前位置保存为全局变量，然后将其添加到我的数组以填充我的UITableView。

基本上，目前我有一个空的UITableView，用于通过搜索栏填充本地搜索的结果。这部分效果很好。但是，我想要的是始终将第一行作为用户的当前位置，如地图，谷歌地图，提醒等。我认为这将是一个简单的任务，但我无法让它工作。有人可以帮帮我吗。

我使用以下代码获取当前位置，对其进行反向地理编码，并在应用启动时将其绘制在地图上：

self.locationManager = [[CLLocationManager alloc]init];
if ([CLLocationManager locationServicesEnabled]) {
    self.locationManager.delegate = self;
    self.locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    [self.locationManager startUpdatingLocation];
}

CLLocationCoordinate2D zoomLocation;
zoomLocation.latitude = _locationManager.location.coordinate.latitude;
zoomLocation.longitude= _locationManager.location.coordinate.longitude;

currentCoord.latitude = _locationManager.location.coordinate.latitude;
currentCoord.longitude= _locationManager.location.coordinate.longitude;

//reverse geocoder
CLLocation *currentLocation = [[CLLocation alloc] initWithLatitude:zoomLocation.latitude longitude:zoomLocation.longitude];
CLGeocoder *geoCoder = [[CLGeocoder alloc] init];
[geoCoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
    for (CLPlacemark *placemark in placemarks) {

        MKPointAnnotation *annotation =
        [[MKPointAnnotation alloc]init];
        annotation.coordinate = zoomLocation;
        annotation.title = @"Current Location";
        annotation.subtitle = placemark.name;

        // 2
        MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(zoomLocation, 0.5*METERS_PER_MILE, 0.5*METERS_PER_MILE);

        // 3
        [_mapView setRegion:viewRegion animated:YES];
        [_mapView addAnnotation:annotation];
    }

}];

当我运行本地搜索时，我使用以下代码填充我的数组以加载表：

MKLocalSearchRequest *request =
[[MKLocalSearchRequest alloc] init];
request.naturalLanguageQuery = _searchBar.text;
request.region = _mapView.region;

MKLocalSearch *search =
[[MKLocalSearch alloc]initWithRequest:request];

[search startWithCompletionHandler:^(MKLocalSearchResponse
                                     *response, NSError *error) {
    if (response.mapItems.count == 0)
        NSLog(@"No Matches");
    else
        for (MKMapItem *item in response.mapItems)
        {
            [tableData addObject:item];
            MKPointAnnotation *annotation =
            [[MKPointAnnotation alloc]init];
            annotation.coordinate = item.placemark.coordinate;
            annotation.title = item.placemark.name;
            annotation.subtitle = item.placemark.title;
            [annotations addObject:annotation];
            [_tableResults reloadData];
        }
}];

我真的无法弄清楚这一点。我如何添加当前位置？非常感谢一些建议。先谢谢你们！

Answer 1

试试这个，

[search startWithCompletionHandler:^(MKLocalSearchResponse
                                     *response, NSError *error) {
    if (response.mapItems.count == 0) 
        NSLog(@"No Matches");
    else
        for (MKMapItem *item in response.mapItems)
        {
            [tableData addObject:item];
            [annotations addObject:[self annotationFromMapItem:item]];
        }
     double latitude = self.locationManager.location.coordinate.latitude;
     double longitude = self.locationManager.location.coordinate.longitude;
     MKPlacemark *placemark = [[[MKPlacemark alloc] initWithCoordinate:CLLocationCoordinate2DMake(latitude, longitude) addressDictionary:nil] autorelease];
     MKMapItem *mapItem = [[[MKMapItem alloc] initWithPlacemark:placemark] autorelease];
    [mapItem setName:Current Location];
    [tableData insertObject:mapItem atIndex:0];
    [annotations insertObject:[self annotationFromMapItem:mapItem] atIndex:0];
    [_tableResults reloadData];
}];

- (MKPointAnnotation) annotationFromMapItem:(MKMapItem *)item {
   MKPointAnnotation *annotation =
            [[MKPointAnnotation alloc]init];
   annotation.coordinate = item.placemark.coordinate;
   annotation.title = item.placemark.name;
   annotation.subtitle = item.placemark.title;
   return annotation;
}

在UITableView中存储当前位置

1 个答案: