我必须自动从Android设备向服务器(php)发送位置(纬度和经度)(每2分钟) 对于这项工作,我使用JobSchedulerCompat来发送位置服务。 但是在此之后,只有在应用程序运行后才将位置发送到服务器,我希望将位置连续发送到服务器。
我怎样才能做到这一点?
到目前为止,这是我的代码:
GpsTracker.java
public class GPSTracker extends Service {
private final Context mContext;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.mContext = context;
getLocation();
}
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
public Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
try {
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
}catch (Exception ex){
ex.printStackTrace();
}
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, locationListenerNetwork);
Toast.makeText(mContext,"Network Enabled",Toast.LENGTH_SHORT).show();
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, locationListenerGps);
//Log.d("GPS Enabled", "GPS Enabled");
Toast.makeText(mContext,"GPS Enabled",Toast.LENGTH_SHORT).show();
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS(){
if(locationManager != null){
locationManager.removeUpdates(locationListenerGps);
}
}
public double getLatitude(){
if(location != null){
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude(){
if(location != null){
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation() {
return this.canGetLocation;
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
MyService.java
public class MyService extends JobService{
String code;
@Override
public boolean onStartJob(JobParameters params) {
code=readsavefile(getApplicationContext(),"Code2","Error");
//Toast.makeText(getApplicationContext(),code,Toast.LENGTH_SHORT).show();
new SendLocation(this,params,getApplicationContext()).execute(code);
//Toast.makeText(getApplicationContext(),"Start",Toast.LENGTH_SHORT).show();
//jobFinished(params, false);
return true;
}
public static String readsavefile(Context context,String pname,String dvalue){
SharedPreferences shared=context.getSharedPreferences("GetCodeService", Context.MODE_PRIVATE);
return shared.getString(pname,dvalue);
}
@Override
public boolean onStopJob(JobParameters params) {
return false;
}
private static class SendLocation extends AsyncTask<String, Void, String> {
MyService myService;
JobParameters jobParameters;
Context _context;
GPSTracker gps;
double lat,lon;
public SendLocation(MyService myService,JobParameters jobParameters,Context context){
this._context=context;
gps=new GPSTracker(context);
if (gps.canGetLocation){
lat=gps.getLatitude();
lon=gps.getLongitude();
}
this.myService=myService;
this.jobParameters=jobParameters;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(String... strings) {
String link = Config.IP_Config + "Hatef/getlocation.php";
HttpClient httpclint = new DefaultHttpClient();
HttpPost httppost = new HttpPost(link);
try {
JSONObject jsonobj = new JSONObject();
jsonobj.put("latitude", lat+"");
jsonobj.put("longitude", lon+"");
jsonobj.put("code", strings[0]);
List<NameValuePair> namevaluepair = new ArrayList<NameValuePair>();
namevaluepair.add(new BasicNameValuePair("req", jsonobj.toString()));
httppost.setEntity(new UrlEncodedFormEntity(namevaluepair, HTTP.UTF_8));
HttpResponse response = httpclint.execute(httppost);
InputStream inputstream = response.getEntity().getContent();
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
String line;
try {
br = new BufferedReader(new InputStreamReader(inputstream));
while ((line = br.readLine()) != null) {
sb.append(line);
}
} catch (Exception ex) {
ex.printStackTrace();
}
return sb.toString();
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
@Override
protected void onPostExecute(String s) {
myService.jobFinished(jobParameters, false);
}
}
}
运行服务
JobInfo.Builder builder=new JobInfo.Builder(100,new ComponentName(this,MyService.class));
builder.setPeriodic(10000)
.setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY)
.setPersisted(true);
mJobScheduler.schedule(builder.build());
的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher2"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".Main"
android:label="@string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".second_page"
android:screenOrientation="portrait" >
</activity>
<service android:name=".MyService"
android:permission="android.permission.BIND_JOB_SERVICE"
android:exported="true"
/>
</application>