本節我們來學習一下arcgis runtime for android方面的相關內容，一一學習相關方面的api知識。這個案例是摘取github官網上面的。主要建立圖形案例的點、線、面，當然還有圖層的建立。來看一下實現的程式碼。

package com.example.arcroid.addgraphicsrenderer;

import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PolygonBuilder;
import com.esri.arcgisruntime.geometry.PolylineBuilder;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
import com.esri.arcgisruntime.symbology.SimpleRenderer;

public class MainActivity extends AppCompatActivity {

    private MapView mapview;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mapview=findViewById(R.id.mapview);

        ArcGISMap mMap = new ArcGISMap(Basemap.Type.TOPOGRAPHIC, 15.169193,
                16.333479, 2);

        mapview.setMap(mMap);

        addGraphicsOverlay();


    }

    private void addGraphicsOverlay(){
        Point pointGeometry = new Point(40e5, 40e5, SpatialReferences.getWebMercator());

        SimpleMarkerSymbol pointSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.DIAMOND, Color.RED, 10);

        Graphic pointGraphic = new Graphic(pointGeometry);


        GraphicsOverlay pointGraphicOverlay = new GraphicsOverlay();

        SimpleRenderer pointRenderer = new SimpleRenderer(pointSymbol);
        pointGraphicOverlay.setRenderer(pointRenderer);

        pointGraphicOverlay.getGraphics().add(pointGraphic);

        mapview.getGraphicsOverlays().add(pointGraphicOverlay);


        PolylineBuilder lineGeometry = new PolylineBuilder(SpatialReferences.getWebMercator());
        lineGeometry.addPoint(-10e5, 40e5);
        lineGeometry.addPoint(20e5, 50e5);

        SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.BLUE, 5);

        Graphic lineGraphic = new Graphic(lineGeometry.toGeometry());

        GraphicsOverlay lineGraphicOverlay = new GraphicsOverlay();

        SimpleRenderer lineRenderer = new SimpleRenderer(lineSymbol);

        lineGraphicOverlay.setRenderer(lineRenderer);

        lineGraphicOverlay.getGraphics().add(lineGraphic);

        mapview.getGraphicsOverlays().add(lineGraphicOverlay);


        PolygonBuilder polygonGeometry = new PolygonBuilder(SpatialReferences.getWebMercator());
        polygonGeometry.addPoint(-20e5, 20e5);
        polygonGeometry.addPoint(20e5, 20e5);
        polygonGeometry.addPoint(20e5, -20e5);
        polygonGeometry.addPoint(-20e5, -20e5);

        SimpleFillSymbol polygonSymbol = new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, Color.YELLOW, null);

        Graphic polygonGraphic = new Graphic(polygonGeometry.toGeometry());

        GraphicsOverlay polygonGraphicOverlay = new GraphicsOverlay();

        SimpleRenderer polygonRenderer = new SimpleRenderer(polygonSymbol);

        polygonGraphicOverlay.setRenderer(polygonRenderer);

        polygonGraphicOverlay.getGraphics().add(polygonGraphic);

        mapview.getGraphicsOverlays().add(polygonGraphicOverlay);

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mapview.dispose();
    }

    @Override
    protected void onResume() {
        super.onResume();
        mapview.resume();
    }

    @Override
    protected void onPause() {
        super.onPause();
    }
}
 

首先來看一下物件點Point相關的api

SimpleMarkerSymbol類的api

graphic類函式

GraphicsOverlay

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