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所以，我有一個在後臺調用的JobService。不過，我需要它來獲取當前位置並將其發送到Web服務。當我發送靜態數據時，web服務運行良好。然而，獲取位置是一個問題。位置對象始終爲空。這是我一直在嘗試的。如果它不具有位置鎖定的yet-這意味着，除非你使用GPS的其他地方，它幾乎總是返回null服務變得空作爲位置
public class GPSBackgroundJobService extends JobService implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
private String LOGSERVICE = "GPS";
private InspectorsLogic mInspectorsLogic;
ParsoContext mContext;
private GoogleApiClient mGoogleApiClient;
ParsoLocationListener mLocationListener;
Location mLastLocation;
Double longitude;
Double latitude;
@Override
public void onCreate() {
super.onCreate();
Log.i(LOGSERVICE, "onCreate");
mContext = (ParsoContext) getApplicationContext();
mInspectorsLogic = new InspectorsLogic(mContext);
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
}
@Override
public boolean onStartJob(JobParameters job) {
Log.i(LOGSERVICE, "onStartJob called");
mGoogleApiClient.connect();
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLastLocation!=null) {
latitude = mLastLocation.getLatitude();
longitude =mLastLocation.getLongitude();
sendGPSTask mSendGPSTask = new sendGPSTask();
mSendGPSTask.execute(Double.toString(latitude), Double.toString(longitude));
}else{
Log.e(LOGSERVICE, "Lat and Long are null");
}
return false;
}
@Override
public boolean onStopJob(JobParameters job) {
mGoogleApiClient.disconnect();
return false;
}
@Override
public void onConnected(Bundle connectionHint) {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}