androidgps經緯度轉換

㈥ 怎麼把android gps坐標位置上傳到伺服器

在配備Android系統的手機中，一般都配備了GPS設備。Android為我們獲取GPS數據提供了很好的介面。本文來說一下如何使用Android獲取GPS的經緯度。
1 從Service繼承一個類。
2 創建startService()方法。
3 創建endService()方法 重載onCreate方法和onDestroy方法，並在這兩個方法裡面來調用startService以及endService。
4 在startService中，通過getSystemService方法獲取Context.LOCATION_SERVICE。
5 基於LocationListener實現一個新類。默認將重載四個方法onLocationChanged、onProviderDisabled、onProviderEnabled、onStatusChanged。對於onLocationChanged方法是我們更新最新的GPS數據的方法。一般我們的操作都只需要在這里進行處理。
6 調用LocationManager的requestLocationUpdates方法，來定期觸發獲取GPS數據即可。在onLocationChanged函數裡面可以實現我們對得到的經緯度的最終操作。
7 最後在我們的Activity裡面通過按鈕來啟動Service，停止Service。
示意代碼如下：
package com.offbye.gpsservice;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
public class GPSService extends Service {
// 2000ms
private static final long minTime = 2000;
// 最小變更距離10m
private static final float minDistance = 10;
String tag = this.toString();
private LocationManager locationManager;
private LocationListener locationListener;
private final IBinder mBinder = new GPSServiceBinder();
public void startService() {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationListener = new GPSServiceListener();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, minTime, minDistance,
locationListener);
}
public void endService() {
if (locationManager != null && locationListener != null) {
locationManager.removeUpdates(locationListener);
}
}
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return mBinder;
}
@Override
public void onCreate() {
//
startService();
Log.v(tag, "GPSService Started.");
}
@Override
public void onDestroy() {
endService();
Log.v(tag, "GPSService Ended.");
}
public class GPSServiceBinder extends Binder {
GPSService getService() {
return GPSService.this;
}
}
}
GPSServiceListener的實現
package com.offbye.gpsservice;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationProvider;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
public class GPSServiceListener implements LocationListener {
private static final String tag = "GPSServiceListener";
private static final float minAccuracyMeters = 35;
private static final String hostUrl = "http://doandroid.info/gpsservice/position.php?";
private static final String user = "huzhangyou";
private static final String pass = "123456";
private static final int ration = 10;
private final DateFormat timestampFormat = new SimpleDateFormat("yyyyMMddHHmmss");
public int GPSCurrentStatus;
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
if (location != null) {
if (location.hasAccuracy() && location.getAccuracy() <= minAccuracyMeters) {
// 獲取時間參數,將時間一並Post到伺服器端
GregorianCalendar greg = new GregorianCalendar();
TimeZone tz = greg.getTimeZone();
int ffset = tz.getOffset(System.currentTimeMillis());
greg.add(Calendar.SECOND, (offset / 1000) * -1);
StringBuffer strBuffer = new StringBuffer();
strBuffer.append(hostUrl);
strBuffer.append("user=");
strBuffer.append(user);
strBuffer.append("&pass=");
strBuffer.append(pass);
strBuffer.append("&Latitude=");
strBuffer.append(location.getLatitude());
strBuffer.append("&Longitude=");
strBuffer.append(location.getLongitude());
strBuffer.append("&Time=");
strBuffer.append(timestampFormat.format(greg.getTime()));
strBuffer.append("&Speed=");
strBuffer.append(location.hasSpeed());
doGet(strBuffer.toString());
Log.v(tag, strBuffer.toString());
}
}
}
// 將數據通過get的方式發送到伺服器,伺服器可以根據這個數據進行跟蹤用戶的行走狀態
private void doGet(String string) {
// TODO Auto-generated method stub
//
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
GPSCurrentStatus = status;
}
}
摘自 offbye的技術博客