[ANDROID] Hiker's Watch App

package com.example.cw.hikerswatch;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import java.util.List;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {
    LocationManager locationManager;
    LocationListener locationListener;
    TextView latitudeTextView;
    TextView longitudeTextView;
    TextView accuracyTextView;
    TextView addressTextView;
    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if(grantResults.length>0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
           startListening();
        }
    }

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        latitudeTextView = (TextView)findViewById(R.id.latitudeTextView);
        longitudeTextView = (TextView)findViewById(R.id.longitudeTextView);
        accuracyTextView = (TextView)findViewById(R.id.accuracyTextView);
        addressTextView = (TextView)findViewById(R.id.addressTextView);

        locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
        locationListener = new LocationListener() {
            @Override            public void onLocationChanged(Location location) {
                updateLocation(location);
            }

            @Override            public void onStatusChanged(String provider, int status, Bundle extras) {

            }

            @Override            public void onProviderEnabled(String provider) {

            }

            @Override            public void onProviderDisabled(String provider) {

            }
        };


        if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
            ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},1);
        }else{
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);
            Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER );
            if(lastKnownLocation!=null){
                updateLocation(lastKnownLocation);
            }
        }
    }

    public void startListening(){
        if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);
        }
    }

    public void updateLocation(Location location)
    {
        latitudeTextView.setText("Latitude : "+location.getLatitude());
        longitudeTextView.setText("Longitude : "+location.getLongitude());
        accuracyTextView.setText("Accuracy : "+location.getAccuracy());

        String address = "Could not find address";

        Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
        try{
            List<Address> listAddresses = geocoder.getFromLocation(location.getLatitude(),location.getLongitude(),1);
            if(listAddresses!=null && listAddresses.size()>0){
                String result = "";
                Log.i("address : ",listAddresses.get(0).toString());

                if(listAddresses.get(0).getFeatureName()!=null)
                {
                    result += listAddresses.get(0).getFeatureName();
                    result += "\r\n";
                }
                if(listAddresses.get(0).getAdminArea()!=null)
                {
                    result += listAddresses.get(0).getAdminArea();
                    result += "\r\n";
                }
                if(listAddresses.get(0).getPostalCode()!=null)
                {
                    result += listAddresses.get(0).getPostalCode();
                    result += "\r\n";
                }
                if(listAddresses.get(0).getCountryName()!=null)
                {
                    result += listAddresses.get(0).getCountryName();
                    result += "\r\n";
                }
                address = result;

            }
            addressTextView.setText(address);
        }catch (Exception e){
            e.printStackTrace();
            addressTextView.setText(address);
        }
    }
}

If You Enjoyed This, Take 5 Seconds To Share It

• 
• 
• 
• 
• 
•