iOS Parse GeoPoints和MapBox形状

所以我想知道如何使用MapBox检索Parse坐标和绘制形状。

我可以检索坐标并在地图上单独绘制它们（使用PARSE ）：

PFQuery *locationQuery = [PFQuery queryWithClassName:@"Location"]; [locationQuery whereKeyExists:@"location"]; locationQuery.cachePolicy = kPFCachePolicyNetworkElseCache; [locationQuery findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) { if (!error) { // The find succeeded. NSLog(@"Successfully retrieved %lu scores.", (unsigned long)objects.count); NSLog(@"Object is %@ and %@", [objects objectAtIndex:0],[objects objectAtIndex:1]); for (PFObject *gp in objects) { //How to get PFGeoPoint and then a location out of an object PFGeoPoint *location = [gp objectForKey:@"location"]; NSLog(@"Hi there my name is: %f", location.latitude); CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(location.latitude, location.longitude); //This is how to populate the data with a title NSString *title = [NSString stringWithFormat:@"%@", gp.createdAt]; RMPointAnnotation *annotation3 = [[RMPointAnnotation alloc] initWithMapView:mapView coordinate:coordinate andTitle:title]; [mapView addAnnotation:annotation3]; } } else { // Log details of the failure NSLog(@"Error: %@ %@", error, [error userInfo]); } }]; 

向地图添加形状（使用MapBox ）也是可行的：

 //Line for streets location arrays, etc MapBox NSArray *locations = [NSArray arrayWithObjects:[[CLLocation alloc] initWithLatitude:-33.980852 longitude:151.072498], [[CLLocation alloc] initWithLatitude:-33.981769 longitude:151.072300], [[CLLocation alloc] initWithLatitude:-33.982018 longitude:151.072257], [[CLLocation alloc] initWithLatitude:-33.982187 longitude:151.072225], nil, nil]; RMAnnotation *annoation43 = [[RMAnnotation alloc] initWithMapView:mapView coordinate:((CLLocation *)[locations 

objectAtIndex：0]）.contaces andTitle：@“Hola biatches！”];

  annoation43.userInfo = locations; [annoation43 setBoundingBoxFromLocations:locations]; [mapView addAnnotation:annoation43]; NSLog(@"It is working Dora!"); -(RMMapLayer *)mapView:(RMMapView *)mapViewer layerForAnnotation:(RMAnnotation *)annotation { if (annotation.isUserLocationAnnotation) return nil; RMShape *shape = [[RMShape alloc] initWithView:mapView]; //Line dashes and colours and widths, etc shape.lineColor = [UIColor orangeColor]; shape.lineWidth = 4.0; shape.scaleLineWidth = YES; shape.scaleLineDash = YES; shape.lineDashLengths = [NSArray arrayWithObjects:[NSNumber numberWithInt:4], [NSNumber numberWithInt:6], nil]; shape.lineDashPhase = 3.0f; for (CLLocation *location in (NSArray *)annotation.userInfo) [shape addLineToCoordinate:location.coordinate]; return shape; } 

我想知道如何让MapBox从这些坐标中绘制一个形状？ 我有过一些尝试而且无处可去，所以有一个比我更好的人会非常感激。 如果您需要更多信息，请告诉我们。

Answer 1

我想通了 – 我尝试的解决方案很好 – 我在循环中初始化数组，因此每次重新创建数组，因此覆盖每个新坐标并尝试仅使用一个坐标绘制一个形状。

 PFQuery *locationQuery2 = [PFQuery queryWithClassName:@"Location"]; [locationQuery2 whereKeyExists:@"location"]; locationQuery2.limit = 4; locationQuery2.cachePolicy = kPFCachePolicyNetworkElseCache; [locationQuery2 findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) { if (!error) { // The find succeeded. NSLog(@"Successfully retrieved %lu scores.", (unsigned long)objects.count); NSLog(@"Object is %@ and %@", [objects objectAtIndex:0],[objects objectAtIndex:1]); NSMutableArray *locations = [[[NSMutableArray alloc] init] mutableCopy]; for (PFObject *gp in objects) { //How to get PFGeoPoint and then a location out of an object PFGeoPoint *location = [gp objectForKey:@"location"]; NSLog(@"Hi there my name is not: %f", location.latitude); CLLocation *coordinate = [[CLLocation alloc] initWithLatitude:location.latitude longitude:location.longitude]; //Line for streets location arrays, etc MapBox [locations addObject:coordinate]; RMAnnotation *annoation43 = [[RMAnnotation alloc] initWithMapView:mapView coordinate:((CLLocation *)[locations objectAtIndex:0]).coordinate andTitle:@"Hola biatches!"]; annoation43.userInfo = locations; [annoation43 setBoundingBoxFromLocations:locations]; [mapView addAnnotation:annoation43]; NSLog(@"It is working Dora!"); NSLog(@"Yeah its is: %@", locations); } } else { // Log details of the failure NSLog(@"Error: %@ %@", error, [error userInfo]); } }];