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《ArcGIS Runtime SDK for Android开发笔记》——(15)、要素绘制Drawtools3.0工具DEMO

1、前言

移动GIS项目开发中点线面的要素绘制及编辑是最常用的操作,在ArcGIS Runtime SDK for iOS 自带AGSSketchLayer类可以帮助用户快速实现要素的绘制,图形编辑。但是在ArcGIS Runtime SDK for Android的版本中并没有提供类似的功能,实现过程相对较复杂。(10.2.8及以下版本需要用户自定义扩展实现,通过扩展MapOnTouchListener类实现,Quartz版SDK默认自带)

之前有大神gispace封装了DrawTools2.0工具类DEMO,实现了简单的要素绘制。但是并没有对要素绘制及编辑状态做很好的体现,如节点,回退操作等。所以鉴于此,我在DrawTools2.0工具类基础上扩展实现了DrawTools3.0,该版本能够实现基本点线面要素的绘制,精细化展现节点变化信息,支持加点,删点,移点操作。

DrawTools2.0地址:http://blog.csdn.net/gispace/article/details/6723459

转载请注明出处:http://www.cnblogs.com/gis-luq/p/5857661.html 

2、使用说明

DrawTools3.0基于DrawTools2.0扩展开发而来,使用思路基本一致,增加节点增加、节点删除、回退操作,要素编辑状态开启与关闭操作。

开源项目库地址:http://git.oschina.net/gis-luq/DrawTool3.0

技术分享

使用流程

  1. 初始化DrawTool工具。
  2. 使用Activity扩展DrawEventListener ,并将当前Activity设置为DrawTool的Listener。
  3. 实现DrawEventListener中的handleDrawEvent方法。
  4. 使用DrawTool工具绘制图形。

MainActivity.java 

package com.gis_luq.drawtoolsdemo;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.widget.Button;import com.esri.android.map.GraphicsLayer;import com.esri.android.map.MapOnTouchListener;import com.esri.android.map.MapView;import com.esri.android.map.ags.ArcGISTiledMapServiceLayer;import com.esri.core.map.Graphic;import com.esri.core.table.TableException;import com.gis_luq.lib.Draw.DrawEvent;import com.gis_luq.lib.Draw.DrawEventListener;import com.gis_luq.lib.Draw.DrawTool;import java.io.FileNotFoundException;public class MainActivity extends Activity implements DrawEventListener {    private Context context;    private MapView mapView = null;    private ArcGISTiledMapServiceLayer arcGISTiledMapServiceLayer = null;    private GraphicsLayer graphicsLayer = null;    private Graphic selectGraphic = null;    private DrawTool drawTool;    public MapOnTouchListener mapDefaultOnTouchListener;//默认点击事件    public DrawEventListener drawEventListener;//要素绘制点击事件    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        context = this;        this.mapView = (MapView)this.findViewById(R.id.map);//设置UI和代码绑定        String strMapUrl="http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineCommunity/MapServer";        this.arcGISTiledMapServiceLayer = new ArcGISTiledMapServiceLayer(strMapUrl);        this.mapView.addLayer(arcGISTiledMapServiceLayer);        graphicsLayer = new GraphicsLayer();        this.mapView.addLayer(graphicsLayer);        // 初始化DrawTool实例        this.drawTool = new DrawTool(this.mapView);        // 将本Activity设置为DrawTool实例的Listener        this.drawTool.addEventListener(this);        //设置地图事件        mapDefaultOnTouchListener = new MapOnTouchListener(this.mapView.getContext(), this.mapView);        drawEventListener = this;        ToolsOnClickListener toolsOnClickListener = new ToolsOnClickListener(context,drawTool,selectGraphic,mapView);        Button btnDrawPoint = (Button)this.findViewById(R.id.btnDrawPoint);        btnDrawPoint.setOnClickListener(toolsOnClickListener);        Button btnDrawPolyline = (Button)this.findViewById(R.id.btnDrawPolyline);        btnDrawPolyline.setOnClickListener(toolsOnClickListener);        Button btnDrawFreePolyline = (Button)this.findViewById(R.id.btnDrawFreePolyline);        btnDrawFreePolyline.setOnClickListener(toolsOnClickListener);        Button btnDrawPolygon = (Button)this.findViewById(R.id.btnDrawPolygon);        btnDrawPolygon.setOnClickListener(toolsOnClickListener);        Button btnDrawFreePolygon = (Button)this.findViewById(R.id.btnDrawFreePolygon);        btnDrawFreePolygon.setOnClickListener(toolsOnClickListener);        Button btnDrawCircle = (Button)this.findViewById(R.id.btnDrawCircle);        btnDrawCircle.setOnClickListener(toolsOnClickListener);        Button btnDrawEnvlope = (Button)this.findViewById(R.id.btnDrawEnvlope);        btnDrawEnvlope.setOnClickListener(toolsOnClickListener);        Button btnDrawEditor = (Button)this.findViewById(R.id.btnDrawSave);        btnDrawEditor.setOnClickListener(toolsOnClickListener);        Button btnDrawUndo = (Button)this.findViewById(R.id.btnDrawUndo);        btnDrawUndo.setOnClickListener(toolsOnClickListener);        Button btnDrawDeleteNode = (Button)this.findViewById(R.id.btnDrawDeleteNode);        btnDrawDeleteNode.setOnClickListener(toolsOnClickListener);    }    @Override    public void handleDrawEvent(DrawEvent event) throws TableException, FileNotFoundException {        // 将画好的图形(已经实例化了Graphic),添加到drawLayer中并刷新显示        this.graphicsLayer.addGraphic(event.getDrawGraphic());        // 修改点击事件为默认        this.mapView.setOnTouchListener(mapDefaultOnTouchListener);    }}

 ToolsOnClickListener.java

package com.gis_luq.drawtoolsdemo;import android.content.Context;import android.view.View;import com.esri.android.map.MapView;import com.esri.core.map.Graphic;import com.gis_luq.lib.Draw.DrawTool;/** * 绘图点击事件 * Created by gis-luq on 2016/1/2. */public class ToolsOnClickListener implements View.OnClickListener {    private Context context = null;    private DrawTool drawTool = null;    private Graphic selectGraphic =null;    private MapView mapView = null;    public ToolsOnClickListener(Context context, DrawTool drawTool, Graphic selectGraphic, MapView mapView) {        this.context = context;        this.drawTool = drawTool;        this.selectGraphic = selectGraphic;        this.mapView = mapView;    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.btnDrawPoint://绘制点                drawTool.activate(DrawTool.POINT);                break;            case R.id.btnDrawPolyline://绘制线                drawTool.activate(DrawTool.POLYLINE);                break;            case R.id.btnDrawFreePolyline://绘制流状线                drawTool.activate(DrawTool.FREEHAND_POLYLINE);                break;            case R.id.btnDrawPolygon://绘制面                drawTool.activate(DrawTool.POLYGON);                break;            case R.id.btnDrawFreePolygon://绘制流状面                drawTool.activate(DrawTool.FREEHAND_POLYGON);                break;            case R.id.btnDrawCircle://绘制圆                drawTool.activate(DrawTool.CIRCLE);                break;            case R.id.btnDrawEnvlope://绘制矩形                drawTool.activate(DrawTool.ENVELOPE);                break;            case R.id.btnDrawSave://保存                drawTool.sendDrawEndEvent();                break;            case R.id.btnDrawUndo://回退                if (drawTool.isActive()){                    drawTool.actionUndo();                }                break;            case R.id.btnDrawDeleteNode://删除节点                if (drawTool.isActive()){                    drawTool.actionDelete();                }                break;        }    }}

 

《ArcGIS Runtime SDK for Android开发笔记》——(15)、要素绘制Drawtools3.0工具DEMO