Question

我无法在地图上显示加载来自parse.com的坐标，标题和副标题的图钉。这是我的代码。有什么逻辑错误吗？我只得到数据库显示的第三行，而不是我在parse.com上的所有五行。

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

             {
                 int raknare = 1;
                 raknare++;

                 PFObject *tempObject = [kundUppgifter objectAtIndex:raknare];

                 PFGeoPoint *geoPoint = [tempObject objectForKey:@"CLAT"];
                 PFGeoPoint *geoPoint2 = (PFGeoPoint *)geoPoint;

                 NSString *cname = @"CNAME";
                 NSString *ctown = @"CTOWN";

                 kundUppgifter = [[NSArray alloc] initWithArray:objects];

                 objects = [NSArray arrayWithObjects:cname,ctown,geoPoint,nil];

                 NSMutableArray * locations = [[NSMutableArray alloc]init];





                     Annotation * myAnn;
                     myAnn = [[Annotation alloc]init];
                     CLLocationCoordinate2D location;

                     double longitude;
                     double latitude;

                     latitude = geoPoint2.latitude;
                     longitude = geoPoint2.longitude;

                     location.latitude = latitude;
                     location.longitude = longitude;

                     geoPoint.latitude = latitude;
                     geoPoint.longitude = longitude;


                     myAnn.coordinate = location;
                     myAnn.title = [tempObject objectForKey:@"CNAME"];
                     myAnn.subtitle = [tempObject objectForKey:@"CTOWN"];



                     [locations addObject:myAnn];

                     [self.myMapView addAnnotations:locations];




                     NSLog(@"geopoint is a pfobject with latitude %f, and longitude %f      kundnamn %@,stad %@,", latitude, longitude, cname, ctown);
                     NSLog(@"%@", cname);
                     NSLog(@"%@", objects);




                }

        }

     }];

如果你能提供帮助，我们很高兴！

Answer 1

for(int i = 0; i<objects.count; i++)
{   
    int raknare = 1;
    raknare++;
    PFObject *tempObject = [kundUppgifter objectAtIndex:raknare];
}

循环中的这段代码会在循环的每次迭代中使raknare == 2。你想使用你设置的i变量从-objectAtIndex中提取：像这样

for(int i = 0; i<objects.count; i++)
{   
    // This gives you a different object each iteration of the loop
    PFObject *tempObject = [kundUppgifter objectAtIndex:i];

}

仅在我的阵列中显示地图上的一个图钉

1 个答案: