270 lines
8.1 KiB
Java
270 lines
8.1 KiB
Java
package at.fhj.airkoality.ui.activity;
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import android.Manifest;
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import android.app.ProgressDialog;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.content.pm.PackageManager;
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import android.os.Bundle;
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import android.preference.PreferenceManager;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.support.design.widget.BottomNavigationView;
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import android.support.v4.app.ActivityCompat;
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import android.support.v4.app.FragmentTransaction;
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import android.support.v7.app.AppCompatActivity;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.util.ArrayList;
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import java.util.List;
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import at.fhj.airkoality.R;
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import at.fhj.airkoality.db.room.AirKoalityDB;
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import at.fhj.airkoality.model.Location;
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import at.fhj.airkoality.network.HttpsGetTask;
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import at.fhj.airkoality.network.RequestCallback;
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import at.fhj.airkoality.service.LocationService;
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import at.fhj.airkoality.ui.fragment.LocationListFragment;
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import at.fhj.airkoality.ui.fragment.MapFragment;
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public class MainActivity extends AppCompatActivity implements RequestCallback {
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private LocationListFragment locationListFragment;
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private MapFragment mapFragment;
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private static final String LOCATION_LIST = "location_list";
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private static final String MAP = "map";
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private static final String FRAGMENT_PREF_KEY = "last_fragment";
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private ProgressDialog progressDialog;
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private AirKoalityDB database;
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private BottomNavigationView bottomNavigationView;
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private SharedPreferences sharedPreferences;
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@Override
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protected void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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locationListFragment = new LocationListFragment();
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mapFragment = new MapFragment();
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bottomNavigationView = findViewById(R.id.bnvMain);
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progressDialog = new ProgressDialog(this);
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database = AirKoalityDB.getDatabase(this);
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sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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transaction.add(R.id.flFragmentContainer, locationListFragment);
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transaction.add(R.id.flFragmentContainer, mapFragment);
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transaction.commit();
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bottomNavigationView.setOnNavigationItemSelectedListener(menuItem -> {
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switch (menuItem.getItemId()){
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case R.id.action_location:
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setSelectedFragment(LOCATION_LIST);
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sharedPreferences.edit()
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.putString(FRAGMENT_PREF_KEY, LOCATION_LIST)
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.apply();
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break;
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case R.id.action_map:
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setSelectedFragment(MAP);
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sharedPreferences.edit()
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.putString(FRAGMENT_PREF_KEY, MAP)
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.apply();
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break;
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}
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return true;
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});
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setSelectedFragment(sharedPreferences.getString("last_fragment", LOCATION_LIST));
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fetchLocations();
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}
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private void fetchLocations() {
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HttpsGetTask httpsGetTask = new HttpsGetTask(this);
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SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
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float latitude = preferences.getFloat("latitude", -1000);
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float longitude = preferences.getFloat("longitude", -1000);
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if (latitude == -1000 || longitude == -1000) {
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httpsGetTask.execute("https://api.openaq.org/v1/locations?country=AT&limit=200");
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} else {
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httpsGetTask.execute("https://api.openaq.org/v1/locations?coordinates=" + latitude + "," + longitude + "&radius=" + 200000 + "&limit=10000");
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}
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}
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private void setSelectedFragment(String fragmentName){
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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switch (fragmentName) {
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case LOCATION_LIST:
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transaction.hide(mapFragment);
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transaction.show(locationListFragment);
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break;
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case MAP:
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transaction.hide(locationListFragment);
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transaction.show(mapFragment);
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break;
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}
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transaction.commit();
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}
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@Override
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public void onRequestStart() {
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progressDialog.setMessage("Fetching...");
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progressDialog.show();
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}
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@Override
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public void onResult(String result) {
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new Thread(()->{
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List<Location> locations;
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//parse result
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if(result == null){
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System.out.println("no locations");
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}else {
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//write to db
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try {
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locations = parseLocations(result);
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database.locationDAO().clear();
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database.locationDAO().addAll(locations);
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}catch (JSONException e){
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e.printStackTrace();
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}
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}
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//notify fragments
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dismissProgressDialog();
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updateFragments();
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}).start();
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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MenuInflater inflater = getMenuInflater();
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inflater.inflate(R.menu.main_menue, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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switch (item.getItemId()){
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case R.id.action_service_on:
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startLocationService();
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return true;
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case R.id.action_service_off:
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stopLocationService();
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return true;
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case R.id.action_refresh:
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fetchLocations();
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return true;
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default:
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return false;
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}
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}
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private void startLocationService() {
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
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Intent intent = new Intent(this, LocationService.class);
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startService(intent);
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} else {
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ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 4711);
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}
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}
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@Override
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public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
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if (requestCode == 4711) {
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if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
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startLocationService();
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}
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}
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}
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private void stopLocationService(){
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Intent intent = new Intent(this, LocationService.class);
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stopService(intent);
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}
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private void updateFragments() {
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runOnUiThread(() -> {
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locationListFragment.refresh();
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mapFragment.refresh();
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});
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}
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private void dismissProgressDialog() {
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runOnUiThread(()-> progressDialog.dismiss());
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}
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private List<Location> parseLocations(String json) throws JSONException {
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List<Location> locations = new ArrayList<>();
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JSONObject jsonObject = new JSONObject(json);
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JSONArray results = jsonObject.getJSONArray("results");
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for (int i = 0; i < results.length(); i++){
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JSONObject locationResult = results.getJSONObject(i);
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String locationName = locationResult.getString("location");
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String city = locationResult.getString("city");
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String country = locationResult.getString("country");
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JSONObject coordinates = locationResult.getJSONObject("coordinates");
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double latitude = coordinates.getDouble("latitude");
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double longitude = coordinates.getDouble("longitude");
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Location location = new Location(locationName, city, country, latitude, longitude);
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locations.add(location);
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}
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return locations;
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}
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}
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