Android Open Source - paktebe Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.maps.paktebe;
//from w  w  w.  j  av  a 2  s  . c o  m
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener { 
Button panduan, daftarTB, petaLokasi,tentangApp;
public SharedPreferences prefLocation;
private LocationManager locationManager= null;
private double userLat = 0;
private double userLng = 0;
private static final long JARAK_MINIMAL_UNTUK_UPDATE = 10; // dalam meter
private static final long WAKTU_MINIMUM_UNTUK_UPDATE= 1000; // dalam detik
Context mContext;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location loc;
      
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mContext = this;
    initLocationManager();
        
    daftarTB = (Button)findViewById(R.id.daftartb);
    daftarTB.setOnClickListener(this);
    
    petaLokasi =(Button) findViewById(R.id.petaLokasi);
    petaLokasi.setOnClickListener(this);
    
    panduan = (Button) findViewById(R.id.panduan);
    panduan.setOnClickListener(this);
    
    tentangApp =(Button) findViewById(R.id.tentangApp);
    tentangApp.setOnClickListener(this);      
  }

  

  private void initLocationManager() {
    try{    
      locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
      
      //getting GPS status
      isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
      
      //getting network status
      isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
      
      //all provider disabled
      if(!isGPSEnabled && !isNetworkEnabled){
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);        
        alertDialog.setTitle("GPS Settings");  
        alertDialog.setMessage("GPS tidak aktif. Apakah Anda ingin menyettingnya?");
            alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,int which) {
                    Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    mContext.startActivity(intent);
                }
            });
      
            alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
                }
            });
      
            alertDialog.show();  
        
      } else {
        this.canGetLocation = true;
        // first get location from network provider
        if(isNetworkEnabled){
          locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, WAKTU_MINIMUM_UNTUK_UPDATE, JARAK_MINIMAL_UNTUK_UPDATE, new MyLocationListener());
          if (locationManager != null){
            loc = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            if (loc != null){
              setUserLocation(loc);
            }
          }
        }
        
        if (isGPSEnabled){
          if (loc == null){
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, WAKTU_MINIMUM_UNTUK_UPDATE, JARAK_MINIMAL_UNTUK_UPDATE, new MyLocationListener());
          
            if(locationManager != null){
              loc = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
              if (loc != null){
                setUserLocation(loc);
              }
            }
          }          
        }        
      }
    } catch(Exception e){
      e.printStackTrace();
    }    
  }

  private void setUserLocation(Location location) {
    userLat = location.getLatitude();
    userLng = location.getLongitude();
    prefLocation = getSharedPreferences("tb", 0);
    String lat= Double.toString(userLat);
    String lon = Double.toString(userLng);    
    Editor ed = prefLocation.edit();
    ed.putString("userLat", lat);
    ed.putString("userLng", lon);
    ed.commit();    
  }

  private class MyLocationListener implements LocationListener{
    @Override
    public void onLocationChanged(Location location) {
      String message = String.format(
          "Lokasi berubah \nLng: %1$s \nLat: %2$s", location.getLongitude(), location.getLatitude());
      Toast.makeText(mContext, message, Toast.LENGTH_LONG).show();
      setUserLocation(location);      
    }

    @Override
    public void onProviderDisabled(String provider) {
      Toast.makeText(mContext, "Provider disabled oleh user. GPS offline", Toast.LENGTH_LONG).show();          
    }

    @Override
    public void onProviderEnabled(String provider) {
      Toast.makeText(mContext, "Provider enabled oleh user. GPS online", Toast.LENGTH_LONG).show();      
    }

    @Override
    public void onStatusChanged(String s, int i, Bundle b) {
      Toast.makeText(mContext, "Status Provider Berubah", Toast.LENGTH_LONG).show();      
    }    
  }


  @Override
  public void onClick(View v) {
    // TODO Auto-generated method stub
    switch(v.getId()){
    case R.id.daftartb:
      startActivity(new Intent(this,DaftarTB.class));
      break;
    
    case R.id.petaLokasi:
      startActivity(new Intent(this,PetaLokasi.class));
      break;
      
    case R.id.panduan:
      startActivity(new Intent(this,Panduan.class));
      break;
      
    case R.id.tentangApp:
      startActivity(new Intent(this,TentangApp.class));
      break;      
    }    
  }
  
  
    public void onBackPressed(){
      new AlertDialog.Builder(this)
      .setTitle ("Keluar dari Pak Tebe")
      .setMessage("Apakah Anda Ingin Keluar?")
      .setNegativeButton ("Tidak",null)
      .setPositiveButton("Ya", new DialogInterface.OnClickListener(){      
        @Override 
        public void onClick(DialogInterface dialog,int which){
          finish();
        }
        }).show();
    }
    
    protected void onDestroy(){
      locationManager = null;
      super.onDestroy();
    }
}

Java Source Code List

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