将 Gps 作为后台服务运行并将坐标发送到 Web 服务器 (PHP)
我知道有很多关于这个问题的问题，我已经经历了几天的所有问题，但找不到合理的答案.我是 android 和 php 的新手，所以我不知道事情是如何完成的.
所以基本上首先我想知道如何在后台运行 gps 作为服务，例如在安装应用程序时它会启动并定期将坐标发送到 Web 服务器?
解决方案只需创建一个一直在后台运行的服务.
例如:-
AndroidLocationServices
公共类 AndroidLocationServices 扩展服务 {唤醒锁唤醒锁；私人位置管理器位置管理器；公共 AndroidLocationServices() {//TODO 自动生成的构造函数存根}@覆盖公共 IBinder onBind(Intent arg0) {//TODO 自动生成的方法存根返回空值；}@覆盖公共无效 onCreate() {//TODO 自动生成的方法存根超级.onCreate();PowerManager pm = (PowerManager) getSystemService(this.POWER_SERVICE);wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DoNotSleep");//Toast.makeText(getApplicationContext(), "服务创建",//Toast.LENGTH_SHORT).show();Log.e("Google", "服务创建");}@覆盖@已弃用公共无效onStart(意图意图，int startId){//TODO 自动生成的方法存根super.onStart(intent, startId);Log.e("谷歌", "服务启动");locationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER，5000, 5, 监听器)；}私有 LocationListener 监听器 = new LocationListener() {@覆盖公共无效onLocationChanged(位置位置){//TODO 自动生成的方法存根Log.e("谷歌", "位置改变");如果(位置 == 空)返回;if (isConnectingToInternet(getApplicationContext())) {JSONArray jsonArray = new JSONArray();JSONObject jsonObject = 新 JSONObject();尝试 {Log.e("纬度", location.getLatitude() + "");Log.e("经度", location.getLongitude() + "");jsonObject.put("纬度", location.getLatitude());jsonObject.put("经度", location.getLongitude());jsonArray.put(jsonObject);Log.e("请求", jsonArray.toString());新 LocationWebService().execute(新字符串 [] {常量.TRACK_URL, jsonArray.toString() });} 捕捉(异常 e){//TODO 自动生成的 catch 块e.printStackTrace();}}}@覆盖公共无效onProviderDisabled(字符串提供者){//TODO 自动生成的方法存根}@覆盖公共无效onProviderEnabled(字符串提供者){//TODO 自动生成的方法存根}@覆盖public void onStatusChanged(String provider, int status, Bundle extras) {//TODO 自动生成的方法存根}};@覆盖公共无效 onDestroy() {//TODO 自动生成的方法存根super.onDestroy();wakeLock.release();}公共静态布尔isConnectingToInternet(上下文_context){ConnectivityManager 连接性 = (ConnectivityManager) _context.getSystemService(Context.CONNECTIVITY_SERVICE);如果(连接！= null){NetworkInfo[] info = 连接性.getAllNetworkInfo();如果(信息！= null)for (int i = 0; i < info.length; i++)if (info[i].getState() == NetworkInfo.State.CONNECTED) {返回真；}}返回假；}}LocationWebService
public class LocationWebService extends AsyncTask{公共位置网络服务(){//TODO 自动生成的构造函数存根}@覆盖受保护的布尔doInBackground(字符串... arg0){ArrayList<NameValuePair>nameValuePairs = new ArrayList();nameValuePairs.add(new BasicNameValuePair("位置", arg0[1]));HttpClient httpclient = new DefaultHttpClient();HttpPost httppost = 新 HttpPost(arg0[0]);HttpParams httpParameters = new BasicHttpParams();httpclient = new DefaultHttpClient(httpParameters);尝试 {httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));HttpResponse 响应；响应 = httpclient.execute(httppost);StatusLine statusLine = response.getStatusLine();if (statusLine.getStatusCode() == HttpStatus.SC_OK) {Log.e("Google", "服务器响应正常");} 别的 {response.getEntity().getContent().close();抛出新的 IOException(statusLine.getReasonPhrase());}} 捕捉(异常 e){e.printStackTrace();}返回空值；}} 您可以在这个 github 项目 androidbackgroundgps 中找到一个带有 Android 应用程序和相应 WebFiles 的示例项目p>
I know there are many questions that have been asked regarding this and i have been going through all that from couple of days but could'nt find a reasonable answer. i am newbie to android and php so i have no idea how things get done.
so basically first i want to know how to run gps as a service in background like when the application is installed it starts and periodically send the coordinates to web server?
解决方案Just create a service that runs in the background all the time.
For Example:-
AndroidLocationServices
public class AndroidLocationServices extends Service {
WakeLock wakeLock;
private LocationManager locationManager;
public AndroidLocationServices() {
// TODO Auto-generated constructor stub
}
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
PowerManager pm = (PowerManager) getSystemService(this.POWER_SERVICE);
wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DoNotSleep");
// Toast.makeText(getApplicationContext(), "Service Created",
// Toast.LENGTH_SHORT).show();
Log.e("Google", "Service Created");
}
@Override
@Deprecated
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);
Log.e("Google", "Service Started");
locationManager = (LocationManager) getApplicationContext()
.getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
5000, 5, listener);
}
private LocationListener listener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
Log.e("Google", "Location Changed");
if (location == null)
return;
if (isConnectingToInternet(getApplicationContext())) {
JSONArray jsonArray = new JSONArray();
JSONObject jsonObject = new JSONObject();
try {
Log.e("latitude", location.getLatitude() + "");
Log.e("longitude", location.getLongitude() + "");
jsonObject.put("latitude", location.getLatitude());
jsonObject.put("longitude", location.getLongitude());
jsonArray.put(jsonObject);
Log.e("request", jsonArray.toString());
new LocationWebService().execute(new String[] {
Constants.TRACK_URL, jsonArray.toString() });
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@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
}
};
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
wakeLock.release();
}
public static boolean isConnectingToInternet(Context _context) {
ConnectivityManager connectivity = (ConnectivityManager) _context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null)
for (int i = 0; i < info.length; i++)
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
return false;
}
}
LocationWebService
public class LocationWebService extends AsyncTask<String, String, Boolean> {
public LocationWebService() {
// TODO Auto-generated constructor stub
}
@Override
protected Boolean doInBackground(String... arg0) {
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("location", arg0[1]));
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(arg0[0]);
HttpParams httpParameters = new BasicHttpParams();
httpclient = new DefaultHttpClient(httpParameters);
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response;
response = httpclient.execute(httppost);
StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
Log.e("Google", "Server Responded OK");
} else {
response.getEntity().getContent().close();
throw new IOException(statusLine.getReasonPhrase());
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
You can find a sample project with Android App and corresponding WebFiles within this github project androidbackgroundgps
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