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我在我的项目中使用 route-me。图书馆相当不错。添加标记，绘制多边形工作正常。如何在给定位置（纬度、经度）放置单个图像作为叠加层？我认为缺少这种功能。有没有人在不超载瓷砖源的情况下放置图像叠加层？

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2 回答 2

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我找到了解决方案...

 CLLocationCoordinate2D lcA =   CLLocationCoordinate2DMake(oSector.f_overlay_lat_min,oSector.f_overlay_long_min);
        CLLocationCoordinate2D lcB = CLLocationCoordinate2DMake(oSector.f_overlay_lat_max,oSector.f_overlay_long_max);

        CGPoint cgA = [mvMap latLongToPixel:lcA];
        CGPoint cgB = [mvMap latLongToPixel:lcB];

        float fLatMin  = MIN(cgA.x,cgB.x);
        float fLongMin = MIN(cgA.y,cgB.y);

        float fWidth  = sqrt((cgA.x - cgB.x)*(cgA.x - cgB.x));
        float fHeight = sqrt((cgA.y - cgB.y)*(cgA.y - cgB.y));

        RMMapLayer *mlLayer = [[RMMapLayer alloc] init];
        mlLayer.contents = (id) oSector.im_overlay.CGImage;
        mlLayer.frame    = CGRectMake(fLatMin,fLongMin,fWidth,fHeight); 

        [[mvMap.contents overlay] addSublayer:mlLayer];

mvMap 是您的 h 文件中某处的 IBOutlet RMMapView *mvMap

oSector.im_overlay.CGImage 可以是 

UIImage *i = [UIImage imageNamed:<something>];
lmLayer.contents = i.CGImage
于 2011-08-15T11:38:35.570 回答
0

为什么不直接使用 RMMarker？您可以将任何图像应用到它并根据需要放置它。如果您愿意，甚至可以将其设为可拖动：

UIImage *imgLocation = [UIImage imageWithContentsOfFile :
                          [[NSBundle mainBundle] pathForResource:@"location_ind"      
                                                          ofType:@"png"]];
markerCurrentLocation = [[RMMarker alloc] initWithUIImage:imgLocation];
// make sure it is always above everything else.
markerCurrentLocation.zPosition = -1.0;
[mapView.markerManager addMarker:markerCurrentLocation
                       AtLatLong:startingPoint];

再见！

——兰迪

于 2011-08-12T21:25:15.150 回答