java实现电子地图源码（java地图模块）
本文目录一览：
- 1、在java中如何绘制电子地图？
- 2、如何使用java 开发百度地图
- 3、做网叶上的电子地图是不是都要基于JAVA程序呢？有没有其他什么方法呢？
- 4、用java编写一个学校地图
- 5、java如何实现电子地图的定位
在java中如何绘制电子地图？
电子地图很多了，手机版的都不要钱了。别写地图了，写火星或者月球的有前途，咱们不是要登月了？
如何使用java 开发百度地图
百度有提供api的，一般是按照api给的网址，在网址后加经纬度或者地区名，但是百度地图要申请秘钥的，这个需要自己去申请一个，免费的，类似的功能你可以参考下面的源码虽然是javascript的，但是java用起来差不多，毕竟你的地图肯定是在web页面显示的
!DOCTYPE html
html
head
meta name="viewport" content="initial-scale=1.0, user-scalable=no" /
meta http-equiv="Content-Type" content="text/html; charset=utf-8" /
titleHello, World/title
style type="text/css"
html{height:100%}
body{height:100%;margin:0px;padding:0px}
#container{height:100%}
/style
script type="text/javascript" src=";ak=您的密钥"
//v2.0版本的引用方式：src=";ak=您的密钥"
//v1.4版本及以前版本的引用方式：src=";key=您的密钥callback=initialize"
/script
/head
body
div id="container"/div
script type="text/javascript"
var map = new BMap.Map("container"); // 创建地图实例
var point = new BMap.Point(116.404, 39.915); // 创建点坐标
map.centerAndZoom(point, 15); // 初始化地图，设置中心点坐标和地图级别
/script
/body
/html
做网叶上的电子地图是不是都要基于JAVA程序呢？有没有其他什么方法呢？
并不一定基于java,象电子地图这类的一般都用ajax来实现动态效果,另外你说的都要下载虚拟机是不对的,只要服务器安装好就行了,客户端的ie是支持java的
用java编写一个学校地图
import javax.swing.icon;
import javax.swing.jbutton;
public class mapbutton extends jbutton {
public mapbutton() {
super();
}
public mapbutton(string arg0) {
super(arg0);
}
public mapbutton(action arg0) {
super(arg0);
}
public mapbutton(icon arg0) {
super(arg0);
}
public mapbutton(string arg0, icon arg1) {
super(arg0, arg1);
}
public byte width, height;
//public pic_w, pic_y;
public void setbuttontitle(byte w, byte h) {
width = w;
height = h;
}
public void setbuttontitle(byte w){
width =w;
}
public byte getbuttonwidth() {
return width;
}
public byte getbuttonheight() {
return height;
}
}
pic:自己写的mappic类的intance:
以下内容为程序代码:
package com.nenghe.mapeditor;
import javax.swing.imageicon;
public class mappic {
imageicon[] baseimages;
imageicon[] itemimages;
imageicon image1;
public mappic() {
init();
}
public void init() {
baseimages = new imageicon[9];
baseimages[0] = new imageicon(mappic.class.getresource("m1.png"
/images/wink.gif[/img]);
baseimages[1] = new imageicon(mappic.class.getresource("m2.png"
/images/wink.gif[/img]);
baseimages[2] = new imageicon(mappic.class.getresource("m3.png"
/images/wink.gif[/img]);
baseimages[3] = new imageicon(mappic.class.getresource("m4.png"
/images/wink.gif[/img]);
baseimages[4] = new imageicon(mappic.class.getresource("m5.png"
/images/wink.gif[/img]);
baseimages[5] = new imageicon(mappic.class.getresource("m6.png"
/images/wink.gif[/img]);
baseimages[6] = new imageicon(mappic.class.getresource("m7.png"
/images/wink.gif[/img]);
baseimages[7] = new imageicon(mappic.class.getresource("m8.png"
/images/wink.gif[/img]);
baseimages[8] = new imageicon(mappic.class.getresource("m9.png"
/images/wink.gif[/img]);
itemimages = new imageicon[3];
itemimages[0] = new imageicon(mappic.class.getresource("error.png"
/images/wink.gif[/img]);
itemimages[1] = new imageicon(mappic.class.getresource("i1.png"
/images/wink.gif[/img]);
itemimages[2] = new imageicon(mappic.class.getresource("i2.png"
/images/wink.gif[/img]);
}
public imageicon getimageicon(int x, int flags) {
if (flags == 0) {
return baseimages[x];
} else if (flags == 1) {
return itemimages[x];
}
return null;
}
}
java如何实现电子地图的定位
CellInfoManager
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.telephony.CellLocation;
import android.telephony.NeighboringCellInfo;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.util.Log;
public class CellInfoManager {
private int asu;
private int bid;
private int cid;
private boolean isCdma;
private boolean isGsm;
private int lac;
private int lat;
private final PhoneStateListener listener;
private int lng;
private int mcc;
private int mnc;
private int nid;
private int sid;
private TelephonyManager tel;
private boolean valid;
private Context context;
public CellInfoManager(Context paramContext) {
this.listener = new CellInfoListener(this);
tel = (TelephonyManager) paramContext.getSystemService(Context.TELEPHONY_SERVICE);
this.tel.listen(this.listener, PhoneStateListener.LISTEN_CELL_LOCATION | PhoneStateListener.LISTEN_SIGNAL_STRENGTH);
context = paramContext;
}
public static int dBm(int i) {
int j;
if (i = 0 i = 31)
j = i * 2 + -113;
else
j = 0;
return j;
}
public int asu() {
return this.asu;
}
public int bid() {
if (!this.valid)
update();
return this.bid;
}
public JSONObject cdmaInfo() {
if (!isCdma()) {
return null;
}
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("bid", bid());
jsonObject.put("sid", sid());
jsonObject.put("nid", nid());
jsonObject.put("lat", lat());
jsonObject.put("lng", lng());
} catch (JSONException ex) {
jsonObject = null;
Log.e("CellInfoManager", ex.getMessage());
}
return jsonObject;
}
public JSONArray cellTowers() {
JSONArray jsonarray = new JSONArray();
int lat;
int mcc;
int mnc;
int aryCell[] = dumpCells();
lat = lac();
mcc = mcc();
mnc = mnc();
if (aryCell == null || aryCell.length 2) {
aryCell = new int[2];
aryCell[0] = cid;
aryCell[1] = -60;
}
for (int i = 0; i aryCell.length; i += 2) {
try {
int j2 = dBm(i + 1);
JSONObject jsonobject = new JSONObject();
jsonobject.put("cell_id", aryCell[i]);
jsonobject.put("location_area_code", lat);
jsonobject.put("mobile_country_code", mcc);
jsonobject.put("mobile_network_code", mnc);
jsonobject.put("signal_strength", j2);
jsonobject.put("age", 0);
jsonarray.put(jsonobject);
} catch (Exception ex) {
ex.printStackTrace();
Log.e("CellInfoManager", ex.getMessage());
}
}
if (isCdma())
jsonarray = new JSONArray();
return jsonarray;
}
public int cid() {
if (!this.valid)
update();
return this.cid;
}
public int[] dumpCells() {
int[] aryCells;
if (cid() == 0) {
aryCells = new int[0];
return aryCells;
}
ListNeighboringCellInfo lsCellInfo = this.tel.getNeighboringCellInfo();
if (lsCellInfo == null || lsCellInfo.size() == 0) {
aryCells = new int[1];
int i = cid();
aryCells[0] = i;
检举补充回答：
return aryCells;
}
int[] arrayOfInt1 = new int[lsCellInfo.size() * 2 + 2];
int j = 0 + 1;
int k = cid();
arrayOfInt1[0] = k;
int m = j + 1;
int n = asu();
arrayOfInt1[j] = n;
IteratorNeighboringCellInfo iter = lsCellInfo.iterator();
while (true) {
if (!iter.hasNext()) {
break;
}
NeighboringCellInfo localNeighboringCellInfo = (NeighboringCellInfo) iter.next();
int i2 = localNeighboringCellInfo.getCid();
if ((i2 = 0) || (i2 == 65535))
continue;
int i3 = m + 1;
arrayOfInt1[m] = i2;
m = i3 + 1;
int i4 = localNeighboringCellInfo.getRssi();
arrayOfInt1[i3] = i4;
}
int[] arrayOfInt2 = new int[m];
System.arraycopy(arrayOfInt1, 0, arrayOfInt2, 0, m);
aryCells = arrayOfInt2;
return aryCells;
}
public JSONObject gsmInfo() {
if (!isGsm()) {
return null;
}
JSONObject localObject = null;
while (true) {
try {
检举补充回答： JSONObject localJSONObject1 = new JSONObject();
String str1 = this.tel.getNetworkOperatorName();
localJSONObject1.put("operator", str1);
String str2 = this.tel.getNetworkOperator();
if ((str2.length() == 5) || (str2.length() == 6)) {
String str3 = str2.substring(0, 3);
String str4 = str2.substring(3, str2.length());
localJSONObject1.put("mcc", str3);
localJSONObject1.put("mnc", str4);
}
localJSONObject1.put("lac", lac());
int[] arrayOfInt = dumpCells();
JSONArray localJSONArray1 = new JSONArray();
int k = 0;
int m = arrayOfInt.length / 2;
while (true) {
if (k = m) {
localJSONObject1.put("cells", localJSONArray1);
localObject = localJSONObject1;
break;
}
int n = k * 2;
int i1 = arrayOfInt[n];
int i2 = k * 2 + 1;
int i3 = arrayOfInt[i2];
JSONObject localJSONObject7 = new JSONObject();
localJSONObject7.put("cid", i1);
localJSONObject7.put("asu", i3);
localJSONArray1.put(localJSONObject7);
k += 1;
}
} catch (JSONException localJSONException) {
localObject = null;
}
}
}
public boolean isCdma() {
if (!this.valid)
update();
