gispoltek

Sedikit kode waktu workshop bareng teman-teman Politeknik Muhammadiyah Pekalongan, mencoba membuat aplikasi GIS berbasis android … masih butuh banyak belajar …

package net.adisucipto.gispoltek;

import android.content.IntentSender;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;

import com.google.android.gms.common.ConnectionResult;

import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class MapsActivity extends FragmentActivity
implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {

private static final String TAG=MapsActivity.class.getSimpleName();
private static final int CONNECTION_FAILURE_RESOLUTION_REQUEST =9000 ;
private GoogleMap mMap; // Might be null if Google Play services APK is not available.
private GoogleApiClient mLocationClient;
private LocationRequest mlocationRequest;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
setUpMapIfNeeded();
mLocationClient=new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
//create the locationRequest object
mlocationRequest= LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(10*1000)
.setFastestInterval(1000);

}

@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
mLocationClient.connect();
}

protected void onPause(){
super.onPause();
if(mLocationClient.isConnected()){
LocationServices.FusedLocationApi.removeLocationUpdates(mLocationClient,this);
mLocationClient.disconnect();
}
}
/**
* Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
* installed) and the map has not already been instantiated.. This will ensure that we only ever
* call {@link #setUpMap()} once when {@link #mMap} is not null.
*

 

* If it isn't installed {@link SupportMapFragment} (and
* {@link com.google.android.gms.maps.MapView MapView}) will show a prompt for the user to
* install/update the Google Play services APK on their device.
*

* A user can return to this FragmentActivity after following the prompt and correctly
* installing/updating/enabling the Google Play services. Since the FragmentActivity may not
* have been completely destroyed during this process (it is likely that it would only be
* stopped or paused), {@link #onCreate(Bundle)} may not be called again so we should call this
* method in {@link #onResume()} to guarantee that it will be called.
*/
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap();
}
}
}

/**
* This is where we can add markers or lines, add listeners or move the camera. In this case, we
* just add a marker near Africa.
*

 

* This should only be called once and when we are sure that {@link #mMap} is not null.
*/
private void setUpMap() {
mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
}

private void handleNewLocation(Location location){
Log.d(TAG,location.toString());

double currenLatitude=location.getLatitude();
double currentLongitude=location.getLongitude();
LatLng latlng= new LatLng(currenLatitude,currentLongitude);

MarkerOptions options= new MarkerOptions()
.position(latlng)
.title("Aku Disini!");
mMap.addMarker(options);
mMap.moveCamera(CameraUpdateFactory.newLatLng(latlng));
}
@Override
public void onConnected(Bundle bundle) {
//Log.i(TAG,"Location Service connected ...");
Location location=LocationServices.FusedLocationApi.getLastLocation(mLocationClient);
if(location==null){
LocationServices.FusedLocationApi.requestLocationUpdates(mLocationClient,mlocationRequest,this);
}
else {
handleNewLocation(location);
}

}

@Override
public void onConnectionSuspended(int i) {
Log.i(TAG,"Location Service suspended. Please reconnect.");
}

@Override
public void onLocationChanged(Location location) {
handleNewLocation(location);
}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
if(connectionResult.hasResolution()) {
try {
connectionResult.startResolutionForResult(this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
}else {
Log.i(TAG,"Location service connection failed with code" + connectionResult.getErrorCode());
}
}

}

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