Android导出Kml

package com.soil.soilsampling.ui.parsekml;

import android.content.Context;
import android.content.res.Resources;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;

import com.soil.soilsampling.R;
import com.soil.soilsampling.base.BaseApplication;
import com.soil.soilsampling.model.CoordinateAlterSample;
import com.soil.soilsampling.support.utils.ToastUtil;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
* Created by GIS on 2016/5/19 0019.
*
*/
public class WriteKml {
private String TAG = "WriteKml";

/*
* 传入两个参数，一是kml的名称，第二个是坐标点的list
* */
public void createKml(String kmlName, List<CoordinateAlterSample> alterSamples) throws Exception
{
Element root = DocumentHelper.createElement("kml");  //根节点是kml
Document document = DocumentHelper.createDocument(root);
//给根节点kml添加属性
root.addAttribute("xmlns", "http://www.opengis.net/kml/2.2")
.addAttribute("xmlns:gx", "http://www.google.com/kml/ext/2.2")
.addAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance")
.addAttribute("xsi:schemaLocation",
"http://www.opengis.net/kml/2.2 http://schemas.opengis.net/kml/2.2.0/ogckml22.xsd http://www.google.com/kml/ext/2.2 http://code.google.com/apis/kml/schema/kml22gx.xsd"); 
//给根节点kml添加子节点  Document
Element documentElement = root.addElement("Document");

documentElement.addElement("name").addText(kmlName); //添加name节点
documentElement.addElement("Snippet").addText(""); //Snippet节点
Element folderElement = documentElement.addElement("Folder");//Folder节点
folderElement.addAttribute("id", "FeatureLayer0");
//给Folder节点添加子节点
folderElement.addElement("name").addText(kmlName);
folderElement.addElement("Snippet").addText("");
//循环添加每一个Placemark节点，有几个坐标点就有几个Placemark节点
for (int i = 0; i < alterSamples.size(); i++) {
Element placeMarkElement = folderElement.addElement("Placemark");
placeMarkElement.addAttribute("id", alterSamples.get(i).getName());
placeMarkElement.addElement("name").addText(alterSamples.get(i).getName());
placeMarkElement.addElement("Snippet").addText("");
placeMarkElement.addElement("description").addCDATA(getCdataContent(alterSamples.get(i).getName(),
alterSamples.get(i).getName(), String.valueOf(alterSamples.get(i).getX()), String.valueOf(alterSamples.get(i).getY()),
alterSamples.get(i).getCostValue()));
placeMarkElement.addElement("styleUrl").addText("#IconStyle00");
Element pointElement = placeMarkElement.addElement("Point");
pointElement.addElement("altitudeMode").addText("clampToGround");
//添加每一个坐标点的经纬度坐标
//pointElement.addElement("coordinates").addText("119.39986000,31.13396700000143,0");
pointElement.addElement("coordinates").addText(String.valueOf(alterSamples.get(i).getX()) + "," +
String.valueOf(alterSamples.get(i).getY()) + "," + "0");
}
Element styleElement = documentElement.addElement("Style");//Style节点
styleElement.addAttribute("id", "IconStyle00");
// IconStyle
Element iconStyleElement = styleElement.addElement("IconStyle");
Element iconElement = iconStyleElement.addElement("Icon");
iconElement.addElement("href").addText("layer0_symbol.png");
iconStyleElement.addElement("scale").addText("0.250000");
// LabelStyle
Element labelStyleElement = styleElement.addElement("LabelStyle");
labelStyleElement.addElement("color").addText("00000000");
labelStyleElement.addElement("scale").addText("0.000000");
// PolyStyle
Element polyStyleElement = styleElement.addElement("PolyStyle");
polyStyleElement.addElement("color").addText("ff000000");
polyStyleElement.addElement("outline").addText("0");

//将生成的kml写出本地
OutputFormat format = OutputFormat.createPrettyPrint();
format.setEncoding("utf-8");//设置编码格式
//将doc.kml写入到/data/data/<package name>/files目录
FileOutputStream outputStream = BaseApplication.getContext().openFileOutput("doc.kml", Context.MODE_PRIVATE);
XMLWriter xmlWriter = new XMLWriter(outputStream,format);

xmlWriter.write(document);

xmlWriter.close();
//开始对文件进行压缩，一个kml文件其实是一个压缩文件，里面包含一个kml文件和一个png图标

String docKmlPath = BaseApplication.getContext().getFilesDir().getAbsolutePath() + "//doc.kml";

zipWriteKml(docKmlPath, kmlName);
ToastUtil.show(BaseApplication.getContext(), "导出kml成功");

}
/*
* 将生成的kml文件和drawable下的某个png图标进行压缩，生成最终的kml文件，并保存在/data/data/<package name>/files目录
* */
public void zipWriteKml(String docKmlPath, String kmlName) throws IOException
{
// 最终生成的kml文件
FileOutputStream fileOutput = BaseApplication.getContext().openFileOutput(kmlName + ".kmz", Context.MODE_PRIVATE);

OutputStream os = new BufferedOutputStream( fileOutput);
ZipOutputStream zos = new ZipOutputStream(os);
byte[] buf = new byte[8192];
int len;

//压缩data/data/package name/files目录下的doc.kml
File file = new File(docKmlPath);
if ( !file.isFile() )
Log.d(TAG, "doc.kml is nonexist");
ZipEntry ze = new ZipEntry( file.getName() );
zos.putNextEntry( ze );
BufferedInputStream bis = new BufferedInputStream( new FileInputStream( file ) );
while ( ( len = bis.read( buf ) ) > 0 ) {
zos.write( buf, 0, len );

}
zos.closeEntry();

// 压缩drawable目录下的图片
Resources r = BaseApplication.getContext().getResources();
Bitmap bitmap = BitmapFactory.decodeResource(r, R.drawable.layer0_symbol);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
InputStream input = new ByteArrayInputStream(baos.toByteArray());
int temp = 0;
ZipEntry entry2 = new ZipEntry("layer0_symbol.png");
zos.putNextEntry(entry2);
while ((temp = input.read()) != -1)
{
zos.write(temp);
}
input.close();
zos.closeEntry();

/* for (int i=0;i < files.length;i++) {
File file = new File(files[i]);
if ( !file.isFile() )
continue;
ZipEntry ze = new ZipEntry( file.getName() );
zos.putNextEntry( ze );
BufferedInputStream bis = new BufferedInputStream( new FileInputStream( file ) );
while ( ( len = bis.read( buf ) ) > 0 ) {
zos.write( buf, 0, len );
Log.d(TAG, "we are zipping "+ file.getName());
}
zos.closeEntry();
}*/

zos.closeEntry();
zos.close();

}
/*
* 生成kml的html备注,在description节点下
* */
public String getCdataContent(String id, String placeMarkName, String x, String y, String costValue)
{
StringBuffer buffer = new StringBuffer();
buffer.append("<html xmlns:fo=\"http://www.w3.org/1999/XSL/Format\" xmlns:msxsl=\"urn:schemas-microsoft-com:xslt\">");
buffer.append("<head>");
buffer.append("<META http-equiv=\"Content-Type\" content=\"text/html\">");
buffer.append("<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">");
buffer.append("</head>");
buffer.append("<body style=\"margin:0px 0px 0px 0px;overflow:auto;background:#FFFFFF;\">");
buffer.append("<table style=\"font-family:Arial,Verdana,Times;font-size:12px;text-align:left;width:100%;border-collapse:collapse;padding:3px 3px 3px 3px\">");
buffer.append("<tr style=\"text-align:center;font-weight:bold;background:#9CBCE2\">");
buffer.append("<td>").append(placeMarkName).append("</td>");
buffer.append("</tr>");
buffer.append("<tr>");
buffer.append("<td>");
buffer.append("<table style=\"font-family:Arial,Verdana,Times;font-size:12px;text-align:left;width:100%;border-spacing:0px; padding:3px 3px 3px 3px\">");
buffer.append("<tr bgcolor=\"#D4E4F3\">");
buffer.append("<td>ID</td>");
buffer.append("<td>").append(id).append("</td>");
buffer.append("</tr>");
buffer.append("<tr>");
buffer.append("<td>name</td>");
buffer.append("<td>").append(placeMarkName).append("</td>");
buffer.append("</tr>");
buffer.append("<tr bgcolor=\"#D4E4F3\">");
buffer.append("<td>X</td>");
buffer.append("<td>").append(x).append("</td>");
buffer.append("</tr>");
buffer.append("<tr>");
buffer.append("<td>Y</td>");
buffer.append("<td>").append(y).append("</td>");
buffer.append("</tr>");
buffer.append("<tr bgcolor=\"#D4E4F3\">");
buffer.append("<td>CostValue</td>");
buffer.append("<td>").append(costValue).append("</td>");
buffer.append("</tr>");
buffer.append("</table>");
buffer.append("</td>");
buffer.append("</tr>");
buffer.append("</table>");
buffer.append("</body>");
buffer.append("</html>");

String cDataContent = buffer.toString();
return cDataContent;
}

}

/*
* 服务器返回的样点，每一个样点包括一个name,x,y,costValue
* */
public class CoordinateAlterSample implements Serializable {
private double x;
private double y;
private String name;
private String costValue;

public String getCostValue() {
return costValue;
}

public void setCostValue(String costValue) {
this.costValue = costValue;
}

public double getX() {
return x;
}
public void setX(double x) {
this.x = x;
}
public double getY() {
return y;
}
public void setY(double y) {
this.y = y;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}

}