Kontinuierliche GPS positionen

mrt · February 10, 2016 at 4:04 PM

Hallo,

ich habe gerade dieses Beispiel eingebaut, um GPS Positionen zu bekommen. Die Position wird nur (einmalig) beim OnClick abgefragt.

Gibt es keine Art Listener, was in festgelegten Zeitabständen abfragt?

Vielen Dank schon mal und viele Grüße

mrt

Kogoro-Christopher · February 10, 2016 at 9:05 PM

Schaue mal Hier

mrt · February 11, 2016 at 9:45 AM

Hm, ich habe den implementierten Listener im Konstuktor übergeben, hier mein Code:

Java: GPSTracker.java

package com.testgps.service;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import com.testgps.util.Logger;
/**
 * GPSTracker
 */
public class GPSTracker extends Service implements LocationListener {
    private static final String LOG_TAG = GPSTracker.class.getSimpleName();
    private final Context mContext;
    // flag for GPS status
    boolean isGPSEnabled = false;
    // flag for network status
    boolean isNetworkEnabled = false;
    // flag for GPS status
    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 = 1; // 1 meter
    // The minimum time between updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1000; // 1 sec //minute
    // Declaring a Location Manager
    protected LocationManager locationManager;
    public GPSTracker(Context context) {
        this.mContext = context;
        getLocation();
    }
    public Location getLocation() {
        try {
            locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
            // Register the listener with the Location Manager to receive location updates
            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
            // getting GPS status
            if (Build.VERSION.SDK_INT &lt; 23 || (Build.VERSION.SDK_INT &gt;= 23 &&
                    ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                    ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
                isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
            }
            // getting network status
            isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
            if (!isGPSEnabled && !isNetworkEnabled) {
                // no network provider is enabled
            } else {
                this.canGetLocation = true;
                // First get location from Network Provider
                if (isNetworkEnabled) {
                    locationManager.requestLocationUpdates(
                            LocationManager.NETWORK_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                    Log.d("Network", "Network");
                    if (locationManager != null) {
                        location = locationManager
                                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                        if (location != null) {
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                        }
                    }
                }
                // if GPS Enabled get lat/long using GPS Services
                if (isGPSEnabled) {
                    if (location == null) {
                        locationManager.requestLocationUpdates(
                                LocationManager.GPS_PROVIDER,
                                MIN_TIME_BW_UPDATES,
                                MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                        Log.d("GPS Enabled", "GPS Enabled");
                        if (locationManager != null) {
                            location = locationManager
                                    .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                            if (location != null) {
                                latitude = location.getLatitude();
                                longitude = location.getLongitude();
                            }
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        Logger.log(LOG_TAG, "************* getLocation " + location.getLatitude() + " " + location.getLongitude(), Logger.LogType.DEBUG);
        return location;
    }
    /**
     * Stop using GPS listener
     * Calling this function will stop using GPS in your app
     * */
    public void stopUsingGPS(){
        if(locationManager != null){
            if (Build.VERSION.SDK_INT &lt; 23 || (Build.VERSION.SDK_INT &gt;= 23 &&
                    ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                    ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
                locationManager.removeUpdates(GPSTracker.this);
            }
        }
    }
    /**
     * Function to get latitude
     * */
    public double getLatitude(){
        if(location != null){
            latitude = location.getLatitude();
        }
        // return latitude
        return latitude;
    }
    /**
     * Function to get longitude
     * */
    public double getLongitude(){
        if(location != null){
            longitude = location.getLongitude();
        }
        // return longitude
        return longitude;
    }
    /**
     * Function to check GPS/wifi enabled
     * @return boolean
     * */
    public boolean canGetLocation() {
        return canGetLocation;
    }
    /**
     * Function to show settings alert dialog
     * On pressing Settings button will lauch Settings Options
     * */
    public void showSettingsAlert(){
        Logger.log(LOG_TAG, "~~~~~~~~ showSettingsAlert ~~~~~~~", Logger.LogType.DEBUG);
//        GPSLocationAccessDialog
    }
    @Override
    public void onLocationChanged(Location location) {
        Logger.log(LOG_TAG, "************* onLocationChanged " + location.getLatitude() + " " + location.getLongitude(), Logger.LogType.DEBUG);
    }
    @Override
    public void onProviderDisabled(String provider) {
    }
    @Override
    public void onProviderEnabled(String provider) {
    }
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
    }
    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }
}

Display More

Aber meine Debugausgabe meldet alle 4 minuten eine neue Location?
Ich registriere beim Callback in den Zeilen 56 und 79

Was mache ich falsch?

Kogoro-Christopher · February 11, 2016 at 7:40 PM

Also sehe jetzt nichts. Evtl. hat sich das GPS-Signal nicht bewegt in der Zeit oder aber du hast evtl. den Energiesparmodus an. Das wäre das was mir einfällt.

mrt · February 12, 2016 at 7:58 AM

Hm ja thnx. Ich debugge am Rechner, dann lauf ich mal mit USB Kabel und Notebook rum

Ben · February 17, 2016 at 2:53 PM

Es gibt eine app namens catlog, wenn du root hast, solltest du den Laptop nicht benötigen um die logcat einträge lesen zu können

Kontinuierliche GPS positionen

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