Arcgis 地图：PictureMarkerSymbol 无法显示标记并给出错误

Question

我刚刚创建了图片符号，但是当我实现图片标记符号时，它仍然给我错误。我不知道出了什么问题，但这是我正在使用的代码。

这条线是红色的 "http://static.arcgis.com/images/Symbols/Basic/RedStickpin.png"); 它说“用try and catch包围” 即使我尝试尝试捕获，它仍然给我错误。 :(

有人知道如何解决这个问题吗？

提前谢谢你

//------if latitutde and longitude is not equal / loop 
    if (eve_lat_default !=0 && eve_longi_default !=0) {
graphicsLayer = new GraphicsLayer();

//--point latlong on location   
Point latlong = new Point(eve_longi_default, eve_lat_default);

//--Convert Spatial reference from 4326(WorldMap) to 3414(ONE MAP)
final Point point = (Point) GeometryEngine.project(latlong, SpatialReference.create(4326),      //WORLDMAP 
                                                                                                                            //CONVERT TO
                                                                                    SpatialReference.create(3414));     //ONEMAP



//Picture Symbol (PIN USING JSON URL FROM ESRI Website)
PictureMarkerSymbol pms = new PictureMarkerSymbol(
                                "http://static.arcgis.com/images/Symbols/Basic/RedStickpin.png");
pms.setAngle(0f);
pms.setOffsetX(0f);
pms.setOffsetY(12f);


//add graphic layer
GraphicsLayer graphicsLayer = new GraphicsLayer();


graphicsLayer.addGraphic(new Graphic(new Point(12, 34), pms));

//add symbol to mapview
mMapView.addLayer(graphicsLayer);

mMapView.zoomToResolution(point,0);

Answer 1

The PictureMarkerSymbol constructor 同时抛出 IOException 和 MalformedURLException。 MalformedURLException 扩展了 IOException，所以捕获 IOException 就足够了：

try {
    PictureMarkerSymbol pms = new PictureMarkerSymbol(
        "http://static.arcgis.com/images/Symbols/Basic/RedStickpin.png");
    pms.setAngle(0f);
    pms.setOffsetX(0f);
    pms.setOffsetY(12f);
    GraphicsLayer graphicsLayer = new GraphicsLayer();
    mMapView.addLayer(graphicsLayer);
    graphicsLayer.addGraphic(new Graphic(new Point(12, 34), pms));
} catch (IOException ioe) {
    //The URL was no good; handle the error
}

这将编译。