Android Open Source - Self-Hosted-GPS-Tracker Self Hosted G P S Tracker Activity

• Back to GPS/send  ↑

From Project

Back to project page Self-Hosted-GPS-Tracker.

License

The source code is released under:

GNU General Public License

Java Source Code

package fr.herverenault.selfhostedgpstracker;
/*from  w ww . ja  va  2 s  .  c om*/
import java.text.DateFormat;
import java.util.Date;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;

public class SelfHostedGPSTrackerActivity extends Activity implements LocationListener {

  private final static String CONNECTIVITY = "android.net.conn.CONNECTIVITY_CHANGE";

  private LocationManager locationManager;
  private ConnectivityManager connectivityManager;

  SharedPreferences preferences;
  private EditText edit_url;
  private TextView text_gps_status;
  private TextView text_network_status;
  private ToggleButton button_toggle;
  private TextView text_running_since;

  private BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
      String action = intent.getAction();
      if (action.equals(SelfHostedGPSTrackerService.NOTIFICATION)) {
        updateServiceStatus();
      }
      if (action.equals(CONNECTIVITY)) {
        updateNetworkStatus();
      }
    }
  };

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

    edit_url = (EditText)findViewById(R.id.edit_url);
    text_gps_status = (TextView)findViewById(R.id.text_gps_status);
    text_network_status = (TextView)findViewById(R.id.text_network_status);
    button_toggle = (ToggleButton)findViewById(R.id.button_toggle);
    text_running_since = (TextView)findViewById(R.id.text_running_since);

    preferences = PreferenceManager.getDefaultSharedPreferences(this);
    if (preferences.contains("URL") && ! preferences.getString("URL", "").equals("")) {
      edit_url.setText(preferences.getString("URL", getString(R.string.hint_url)));
      edit_url.clearFocus();
    } else {
      edit_url.requestFocus();
    }
    edit_url.addTextChangedListener(new TextWatcher() {
      @Override
      public void onTextChanged(CharSequence s, int start, int before, int count) {
      }

      @Override
      public void beforeTextChanged(CharSequence s, int start, int count, int after) {
      }

      @Override
      public void afterTextChanged(Editable s) {
        SharedPreferences.Editor editor = preferences.edit();
        editor.putString("URL", s.toString().trim());
        editor.commit();
      }
    });
    
    registerReceiver(receiver, new IntentFilter(SelfHostedGPSTrackerService.NOTIFICATION));
    registerReceiver(receiver, new IntentFilter(SelfHostedGPSTrackerActivity.CONNECTIVITY));
    
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    connectivityManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

    int pref_gps_updates = Integer.parseInt(preferences.getString("pref_gps_updates", "30")); // seconds    
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, pref_gps_updates * 1000, 1, this);
  }

  @Override
  public void onResume() {
    super.onResume();

    if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
      onProviderEnabled(LocationManager.GPS_PROVIDER);
    } else {
      onProviderDisabled(LocationManager.GPS_PROVIDER);
    }

    updateNetworkStatus();
    
    updateServiceStatus();
  }

  @Override
  public void onPause() {
    super.onPause();
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    locationManager.removeUpdates(this);
    unregisterReceiver(receiver);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_self_hosted_gpstracker, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    Intent i;
    switch (item.getItemId()) {
    case R.id.menu_settings:
      i = new Intent(this, SelfHostedGPSTrackerPrefs.class);
      startActivity(i);
      break;
    default:
    }
    return super.onOptionsItemSelected(item);
  }

  public void onToggleClicked(View view) {
    Intent intent = new Intent(this, SelfHostedGPSTrackerService.class);
    if (((ToggleButton) view).isChecked()) {
      startService(intent);
    } else {
      stopService(intent);
    }
  }

  /* -------------- GPS stuff -------------- */

  @Override
  public void onLocationChanged(Location location) {
  }

  @Override
  public void onProviderDisabled(String provider) {
    text_gps_status.setText(getString(R.string.text_gps_status_disabled));
    text_gps_status.setTextColor(Color.RED);
  }

  @Override
  public void onProviderEnabled(String provider) {
    text_gps_status.setText(getString(R.string.text_gps_status_enabled));
    text_gps_status.setTextColor(Color.BLACK);
  }

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

  /* ----------- utility methods -------------- */
  private void updateServiceStatus() {
    
    if (SelfHostedGPSTrackerService.isRunning) {
      Toast.makeText(this, getString(R.string.toast_service_running), Toast.LENGTH_SHORT).show();
      button_toggle.setChecked(true);
      text_running_since.setText(getString(R.string.text_running_since) + " " 
          + DateFormat.getDateTimeInstance().format(SelfHostedGPSTrackerService.runningSince.getTime()));
    } else {
      Toast.makeText(this, getString(R.string.toast_service_stopped), Toast.LENGTH_SHORT).show();
      button_toggle.setChecked(false);
      if (preferences.contains("stoppedOn")) {
        long stoppedOn = preferences.getLong("stoppedOn", 0);
        if (stoppedOn > 0) {
          text_running_since.setText(getString(R.string.text_stopped_on) + " " 
              + DateFormat.getDateTimeInstance().format(new Date(stoppedOn)));
        } else {
          text_running_since.setText(getText(R.string.text_killed));
        }
      }
    }
  }
  
  private void updateNetworkStatus() {
    NetworkInfo activeNetwork = connectivityManager.getActiveNetworkInfo();
    if (activeNetwork != null && activeNetwork.isConnectedOrConnecting()) {
      text_network_status.setText(getString(R.string.text_network_status_enabled));
      text_network_status.setTextColor(Color.BLACK);
    } else {
      text_network_status.setText(getString(R.string.text_network_status_disabled));
      text_network_status.setTextColor(Color.RED);
    }
  }
}

Java Source Code List

• Back to GPS/send  ↑