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У меня есть класс для MapActivity Я разбираю webservice и получаю arraylist в качестве возвращаемого значения. Я хочу, чтобы arraylist в OnCreate метод перейти к следующему Intent, нажав на ButtonAndroid - Получить результат doInBackground в OnCreate
Мой код:
package com.demo.map;
import java.util.ArrayList;
import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import com.demo.map.R;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends Fragment{
private GoogleMap mMap;
private String[] places = {"ATM|Hospital|Police|Restaurant"};
public LocationManager locationManager;
public Location loc;
Place placeDetail;
public static final String TAG = "MainActivity";
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
//super.onCreate(savedInstanceState);
final View v = inflater.inflate(R.layout.activity_sub_main, container, false);
mMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
locationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
String provider = locationManager.getBestProvider(new Criteria(), false);
Location location = locationManager.getLastKnownLocation(provider);
if (location == null)
{
locationManager.requestLocationUpdates(provider, 0, 0, listener);
}
else
{
loc = location;
new GetPlaces(getActivity(), places[0].toLowerCase().replace("-", "_")).execute();
Log.e(TAG, "location : " + location);
}
Button camera_btn = (Button) v.findViewById(R.id.map_activity_cam_button);
camera_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i = new Intent(getActivity(),Compass.class);
// pass arraylist by clicking on this button. I want resulted arraylist from doInBackground.. i.e. *findplaces*
startActivity(i);
}
});
return v;
}
private class GetPlaces extends AsyncTask<Void, Void, ArrayList<Place>> {
private ProgressDialog dialog;
private Context context = getActivity();
private String places;
public GetPlaces(Activity act, String places) {
this.context = act;
this.places = places;
}
@Override
protected void onPostExecute(ArrayList<Place> result) {
super.onPostExecute(result);
if (dialog.isShowing()) {
dialog.dismiss();
}
for (int i = 0; i < result.size(); i++)
{
mMap.addMarker(new MarkerOptions()
.title(result.get(i).getName())
.position(new LatLng(result.get(i).getLatitude(), result.get(i).getLongitude()))
.icon(BitmapDescriptorFactory.fromResource(R.drawable.google_pin_new))
.snippet(result.get(i).getVicinity()));
}
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(new LatLng(result.get(0).getLatitude(), result.get(0).getLongitude()))
// Sets the center of the map to Mountain View
.zoom(14) // Sets the zoom
.tilt(30) // Sets the tilt of the camera to 30 degrees
.build(); // Creates a CameraPosition from the builder
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
}
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(context);
dialog.setCancelable(false);
dialog.setMessage("Loading..");
dialog.isIndeterminate();
dialog.show();
}
@Override
protected ArrayList<Place> doInBackground(Void... arg0) {
PlacesService service = new PlacesService(
"AIzaSyAmllugM0BoCNosipmHpw1picM2a1XNOEA");
ArrayList<Place> findPlaces = service.findPlaces(loc.getLatitude(), // 28.632808
loc.getLongitude(), places); // 77.218276
for (int i = 0; i < findPlaces.size(); i++) {
placeDetail = findPlaces.get(i);
Log.e(TAG, "places : " + placeDetail.getName());
}
return findPlaces;
}
}
private LocationListener listener = new LocationListener() {
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onLocationChanged(Location location) {
Log.e(TAG, "location update : " + location);
loc = location;
locationManager.removeUpdates(listener);
}
};
}
Место класс
public class Place {
private String id;
private String icon;
private String name;
private String vicinity;
private Double latitude;
private Double longitude;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getIcon() {
return icon;
}
public void setIcon(String icon) {
this.icon = icon;
}
public Double getLatitude() {
return latitude;
}
public void setLatitude(Double latitude) {
this.latitude = latitude;
}
public Double getLongitude() {
return longitude;
}
public void setLongitude(Double longitude) {
this.longitude = longitude;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getVicinity() {
return vicinity;
}
public void setVicinity(String vicinity) {
this.vicinity = vicinity;
}
static Place jsonToPontoReferencia(JSONObject pontoReferencia) {
try {
Place result = new Place();
JSONObject geometry = (JSONObject) pontoReferencia.get("geometry");
JSONObject location = (JSONObject) geometry.get("location");
result.setLatitude((Double) location.get("lat"));
result.setLongitude((Double) location.get("lng"));
result.setIcon(pontoReferencia.getString("icon"));
result.setName(pontoReferencia.getString("name"));
result.setVicinity(pontoReferencia.getString("vicinity"));
result.setId(pontoReferencia.getString("id"));
return result;
} catch (JSONException ex) {
Logger.getLogger(Place.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
@Override
public String toString() {
return "Place{" + "id=" + id + ", icon=" + icon + ", name=" + name + ", latitude=" + latitude + ", longitude=" + longitude + '}';
}
}
PlaceService Класс
public class PlacesService {
private String API_KEY;
public PlacesService(String apikey) {
this.API_KEY = apikey;
}
public void setApiKey(String apikey) {
this.API_KEY = apikey;
}
public ArrayList<Place> findPlaces(double latitude, double longitude,
String placeSpacification) {
String urlString = makeUrl(latitude, longitude, placeSpacification);
try {
String json = getJSON(urlString);
System.out.println(json);
JSONObject object = new JSONObject(json);
JSONArray array = object.getJSONArray("results");
ArrayList<Place> arrayList = new ArrayList<Place>();
for (int i = 0; i < array.length(); i++) {
try {
Place place = Place
.jsonToPontoReferencia((JSONObject) array.get(i));
Log.v("Places Services ", "" + place);
arrayList.add(place);
} catch (Exception e) {
}
}
return arrayList;
} catch (JSONException ex) {
Logger.getLogger(PlacesService.class.getName()).log(Level.SEVERE,
null, ex);
}
return null;
}
// https://maps.googleapis.com/maps/api/place/search/json?location=28.632808,77.218276&radius=500&types=atm&sensor=false&key=apikey
private String makeUrl(double latitude, double longitude, String place) {
StringBuilder urlString = new StringBuilder(
"https://maps.googleapis.com/maps/api/place/search/json?");
if (place.equals("")) {
urlString.append("&location=");
urlString.append(Double.toString(latitude));
urlString.append(",");
urlString.append(Double.toString(longitude));
urlString.append("&radius=1000");
// urlString.append("&types="+place);
urlString.append("&sensor=false&key=" + API_KEY);
} else {
urlString.append("&location=");
urlString.append(Double.toString(latitude));
urlString.append(",");
urlString.append(Double.toString(longitude));
urlString.append("&radius=1000");
urlString.append("&types=" + place);
urlString.append("&sensor=false&key=" + API_KEY);
}
return urlString.toString();
}
protected String getJSON(String url) {
return getUrlContents(url);
}
private String getUrlContents(String theUrl) {
StringBuilder content = new StringBuilder();
try {
URL url = new URL(theUrl);
URLConnection urlConnection = url.openConnection();
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(urlConnection.getInputStream()), 8);
String line;
while ((line = bufferedReader.readLine()) != null) {
content.append(line + "\n");
}
bufferedReader.close();
}catch (Exception e) {
e.printStackTrace();
}
return content.toString();
}
}
Вы хотите нажать на кнопку, чтобы получить 'ArrayList', а затем запустить новую' Деятельность'? –
Apoorv
Да .. Я хочу, чтобы арреалисты находят место, а затем перешли к следующей операции .. нажав на кнопку камеры, определенную в oncreate –
Затем запустите 'AsyncTask' при нажатии кнопки и' startActivity' на 'onPostExecute'. Таким образом у вас будет 'ArrayList'. –
Apoorv