首页 > 代码库 > 《ArcGIS Runtime SDK for Android开发笔记》——(15)、要素绘制Drawtools3.0工具DEMO
《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
使用流程
- 初始化DrawTool工具。
- 使用Activity扩展DrawEventListener ,并将当前Activity设置为DrawTool的Listener。
- 实现DrawEventListener中的handleDrawEvent方法。
- 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