android ArcGIS学习笔记一

动态操作地图服务

1.动态添加一个地图服务

String url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer";

ArcGISDynamicMapServiceLayer arcGISDynamicMapServiceLayer=new ArcGISDynamicMapServiceLayer(HelloWorld.this,HelloWorld.this.url);

map.addLayer(arcGISDynamicMapServiceLayer);

2.移除地图服务

map.removeLayer();

reorderLayer();

导航与触屏操作

1.放大

map.zoomin();

2.缩小

map.zoomout();

3.取得当前长按位置坐标

this.map.setOnLongPressListener(new OnLongPressListener(){

@Override

public void onLongPress(float x, float y) {

Point point=HelloWorld.this.map.toMapPoint(x,y);

showStation.setText("X:"+point.getX()+"Y:"+point.getY());

}

});

4.mapView的事件

OnLongPressListener 在MapView 上长按时

OnMapExtentChangedListener MapView 的地图范围改变时

OnPanListener 在MapView 中拖劢地图时

OnPinchListener 在MapView 上两指缩放操作时

OnSingleTapListener 在MapView 上单击时

OnStatusChangedListener 在MapView 的状态改变，比如被创建戒刜始化时

OnZoomListener 在MapView 被缩放时

MapOnTouchListener 在MapView 上按住并移劢（类似绘图操作）时

用户要素

1.添加用户要素

graphicsLayer=(GraphicsLayer) findViewById(R.id.glayer);

graphicsLayer.setRenderer(new SimpleRenderer(new SimpleMarkerSymbol(Color.RED,20,STYLE.SQUARE)));

Graphic graphic=new Graphic();

graphic.setGeometry(HelloWorld.this.map.getCenter());

graphicsLayer.addGraphic(graphic);

graphicsLayer.postInvalidate();

2.添加用户要素使用指定图片

Drawable drawable=this.getBaseContext().getResources().getDrawable(R.drawable.icon);

graphicsLayer.setRenderer(new SimpleRenderer(new PictureMarkerSymbol(drawable)));

Graphic graphic=new Graphic();

graphic.setGeometry(HelloWorld.this.map.getCenter());

graphicsLayer.addGraphic(graphic);

graphicsLayer.postInvalidate();

3.分类渲染或是唯一值渲染

graphicsLayer=(GraphicsLayer) findViewById(R.id.glayer);

//分类渲染或是唯一值渲染

ClassBreaksRenderer breaksRenderer=new ClassBreaksRenderer();

breaksRenderer.setField("class");

breaksRenderer.setMinValue(0);

ClassBreak cb1=new ClassBreak();

cb1.setClassMaxValue(0.5);

cb1.setSymbol(new SimpleMarkerSymbol(Color.RED,20,SimpleMarkerSymbol.STYLE.CIRCLE));

breaksRenderer.addClassBreak(cb1);

ClassBreak cb2=new ClassBreak();

cb1.setClassMaxValue(1);

cb1.setSymbol(new SimpleMarkerSymbol(Color.GREEN,20,SimpleMarkerSymbol.STYLE.CIRCLE));

breaksRenderer.addClassBreak(cb2);

graphicsLayer.setRenderer(breaksRenderer);

//添加用户要素

Graphic graphic=new Graphic();

//分类渲染或是唯一值渲染时使用

graphic.setAttributeValue("class", Math.random());

graphic.setGeometry(HelloWorld.this.map.getCenter());

graphicsLayer.addGraphic(graphic);

graphicsLayer.postInvalidate();

通过交互绘制几何图相

查询与实别