現在値付近のツイートを取得するAndroidアプリ

	package com.xsota.twittergps.twittergps;

	import android.Manifest;
	import android.content.Context;
	import android.content.pm.PackageManager;
	import android.location.Location;
	import android.location.LocationListener;
	import android.location.LocationManager;
	import android.os.AsyncTask;
	import android.os.Build;
	import android.support.v4.app.FragmentActivity;
	import android.os.Bundle;
	import android.util.Log;

	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;

	import twitter4j.GeoLocation;
	import twitter4j.Query;
	import twitter4j.QueryResult;

	import twitter4j.Twitter;
	import twitter4j.TwitterException;
	import twitter4j.TwitterFactory;
	import twitter4j.auth.AccessToken;

	public class MapsActivity extends FragmentActivity implements LocationListener {

	private GoogleMap map;

	private LocationManager locationManager;

	private Twitter twitter;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_maps);
	setUpMapIfNeeded();
	locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);

	twitter = new TwitterFactory().getSingleton();
	twitter.setOAuthConsumer("api key", "api secret");
	twitter.setOAuthAccessToken(new AccessToken("token", "token secret"));
	}

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

	if(Build.VERSION.SDK_INT >= 23) {
	if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
	//permissionがなかった時の処理
	return;
	}
	}

	locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 600, 0, this);
	locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 600, 0, this);
	}

	private void setUpMapIfNeeded() {
	if (map == null) {
	map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
	.getMap();
	}
	}


	private void getTweets(Location location) throws TwitterException {
	Query query = new Query();

	// 緯度経度セットする
	GeoLocation geo = new GeoLocation(location.getLatitude(),location.getLongitude());
	query.setGeoCode(geo, 10.0, Query.KILOMETERS);

	AsyncTask<Query, Void, QueryResult> task = new AsyncTask<Query, Void, QueryResult>() {

	@Override
	protected QueryResult doInBackground(Query... params) {

	Query query = params[0];
	// 検索する
	QueryResult result = null;
	try {
	result = twitter.search(query);
	} catch (TwitterException e) {
	e.printStackTrace();
	}

	return result;
	}

	//検索結果をマーカーとして表示
	@Override
	protected void onPostExecute(QueryResult result) {

	for(twitter4j.Status status : result.getTweets()){
	Log.i("text", status.getText());
	Log.i("place",status.getPlace() + " : " + status.getGeoLocation());
	GeoLocation geoLocation = status.getGeoLocation();

	if(geoLocation == null){
	return;
	}
	map.addMarker(new MarkerOptions().position(new LatLng(geoLocation.getLatitude(), geoLocation.getLongitude())).title("Tweet"));
	}


	return;
	}

	}.execute(query);


	}

	@Override
	public void onLocationChanged(Location location) {
	Log.i("lonlat:", "lon:" + location.getLongitude());
	Log.i("lonlat:", "lat:" + location.getLatitude());

	LatLng latlng = new LatLng(location.getLatitude(), location.getLongitude());
	map.animateCamera(CameraUpdateFactory.newLatLng(latlng));

	try {
	getTweets(location);
	} catch (TwitterException e) {
	Log.e("TwitterException",e.getMessage());
	}
	}

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

	}

	@Override
	public void onProviderEnabled(String provider) {

	}

	@Override
	public void onProviderDisabled(String provider) {

	}

	}