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python – How to make GPS-app for android using kivy, pyjnius?

Posted by: admin June 15, 2020 Leave a comment

Questions:

Im new in KIVY, pyjnius and python-android. I need to make simple app for android, which shows GPS coordinates. But, as i said, i’m new in kivy and pyforandroid. Can somebody show/give me example,which shows my coordinates in simple kivy-label-widget?
Thanks a lot!

I ve tried to do something like this but…

    package org.renpy.android;

//import java.util.ArrayList;
//import java.util.List;

import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.content.Context;
import android.os.Bundle;
import android.os.Looper;
import java.lang.Thread;
import android.app.Activity;

public class KivyGps {
    LocationManager lm;
    Thread gpsThread;
    public long minDistance = 1;
    public int  minTime = 1000;


   static class KivyLocationListener implements LocationListener {

    public Location lastLocation = new Location("Other");
    //private List<LocationListener> listeners = new ArrayList<LocationListener>();

    public void onLocationChanged(Location location) {
        // TODO Auto-generated method stub
        lastLocation = location;
        //updateListeners(location);
    }

    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub
    }

    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub
    }

    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub
    }

        // TODO Auto-generated method stub
        return lastLocation;
    }

    }

    static public KivyLocationListener locationListener = new KivyLocationListener();
    public Thread init(final Activity currActivity) {

        gpsThread = new Thread( new Runnable() {

          public void run() {
            try {
                Looper.prepare();
                 lm = (LocationManager) currActivity.getSystemService( Context.LOCATION_SERVICE );
                 lm.requestLocationUpdates( LocationManager.GPS_PROVIDER, minTime, minDistance, locationListener );
                 Looper.loop();

                }
            catch ( Exception e ) {
                e.printStackTrace();
            }
          }

        } );
        return gpsThread;    
    }
    //gpsThread.start();

}

In python

from jnius import autoclass

LocationListener = autoclass('android.location.LocationListener')
LocationManager = autoclass('android.location.LocationManager')
LocationProvider = autoclass('android.location.LocationProvider')
Location = autoclass('android.location.Location')
Looper = autoclass('android.os.Looper')
Context = autoclass('android.content.Context')
KivyGps = autoclass('org.renpy.android.KivyGps')

currentActivity = cast('android.app.Activity', PythonActivity.mActivity)
lm = currentActivity.getSystemService( Context.LOCATION_SERVICE)
if lm.isProviderEnabled( LocationManager.GPS_PROVIDER ):
    print 'CON GPS'

else:
    print 'SIN GPS'


lps = lm.getAllProviders()
for lp in lps.toArray():
    print lp
#Arreglar problema de derechos ACCESS_FINE_LOCATION en Kivy Launcher
lp = lm.getProvider('gps')

ll = KivyGps.locationListener
kgps = KivyGps()
gpsThread = kgps.init( currentActivity )
gpsThread.start()

loc = ll.getCurrentLocation()
if loc:
    print loc.getLatitude()
    print loc.getLongitude()
How to&Answers:

I did while ago a demo of accessing GPS within Kivy/pyjnius:

https://github.com/tito/android-demo

Look at the source code, everything is in it.

Answer:

You can now use Plyer: http://github.com/kivy/plyer.

It supports GPS.

Answer:

Plyer is a Python library for accessing features of your hardware / platforms.

Just found it, so I don’t know much about it.

Documentation:

https://plyer.readthedocs.org/en/latest/

Source:

https://github.com/kivy/plyer

Found it on this Kivy Github issue:

https://github.com/kivy/kivy/issues/994

Answer:

You can use another alternative, which is the Android module, remember, to try it in Qpython3 in your android device because it has the necessary permissions and also turn on your gps location. here is the code:

import android
droid = android.Android()
loc = droid.readLocation()
lattitude = loc.result['network']['latitude']
longitude = loc.result['network']['longitude']
print(lattitude, longitude )