/**
* Copyright 2012 Facebook
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.scrumptious;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Looper;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import com.facebook.FacebookException;
import com.facebook.widget.FriendPickerFragment;
import com.facebook.widget.PickerFragment;
import com.facebook.widget.PlacePickerFragment;
/**
* The PickerActivity enhances the Friend or Place Picker by adding a title
* and a Done button. The selection results are saved in the ScrumptiousApplication
* instance.
*/
public class PickerActivity extends FragmentActivity {
public static final Uri FRIEND_PICKER = Uri.parse("picker://friend");
public static final Uri PLACE_PICKER = Uri.parse("picker://place");
private static final int SEARCH_RADIUS_METERS = 1000;
private static final int SEARCH_RESULT_LIMIT = 50;
private static final String SEARCH_TEXT = "Restaurant";
private static final int LOCATION_CHANGE_THRESHOLD = 50; // meters
private static final Location SAN_FRANCISCO_LOCATION = new Location("") {{
setLatitude(37.7750);
setLongitude(-122.4183);
}};
private FriendPickerFragment friendPickerFragment;
private PlacePickerFragment placePickerFragment;
private LocationListener locationListener;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.pickers);
Bundle args = getIntent().getExtras();
FragmentManager manager = getSupportFragmentManager();
Fragment fragmentToShow = null;
Uri intentUri = getIntent().getData();
if (FRIEND_PICKER.equals(intentUri)) {
if (savedInstanceState == null) {
friendPickerFragment = new FriendPickerFragment(args);
} else {
friendPickerFragment = (FriendPickerFragment) manager.findFragmentById(R.id.picker_fragment);;
}
friendPickerFragment.setOnErrorListener(new PickerFragment.OnErrorListener() {
@Override
public void onError(PickerFragment<?> fragment, FacebookException error) {
PickerActivity.this.onError(error);
}
});
friendPickerFragment.setOnDoneButtonClickedListener(new PickerFragment.OnDoneButtonClickedListener() {
@Override
public void onDoneButtonClicked(PickerFragment<?> fragment) {
finishActivity();
}
});
fragmentToShow = friendPickerFragment;
} else if (PLACE_PICKER.equals(intentUri)) {
if (savedInstanceState == null) {
placePickerFragment = new PlacePickerFragment(args);
} else {
placePickerFragment = (PlacePickerFragment) manager.findFragmentById(R.id.picker_fragment);
}
placePickerFragment.setOnSelectionChangedListener(new PickerFragment.OnSelectionChangedListener() {
@Override
public void onSelectionChanged(PickerFragment<?> fragment) {
finishActivity(); // call finish since you can only pick one place
}
});
placePickerFragment.setOnErrorListener(new PickerFragment.OnErrorListener() {
@Override
public void onError(PickerFragment<?> fragment, FacebookException error) {
PickerActivity.this.onError(error);
}
});
placePickerFragment.setOnDoneButtonClickedListener(new PickerFragment.OnDoneButtonClickedListener() {
@Override
public void onDoneButtonClicked(PickerFragment<?> fragment) {
finishActivity();
}
});
fragmentToShow = placePickerFragment;
} else {
// Nothing to do, finish
setResult(RESULT_CANCELED);
finish();
return;
}
manager.beginTransaction().replace(R.id.picker_fragment, fragmentToShow).commit();
}
@Override
protected void onStart() {
super.onStart();
if (FRIEND_PICKER.equals(getIntent().getData())) {
try {
friendPickerFragment.loadData(false);
} catch (Exception ex) {
onError(ex);
}
} else if (PLACE_PICKER.equals(getIntent().getData())) {
try {
Location location = null;
Criteria criteria = new Criteria();
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
String bestProvider = locationManager.getBestProvider(criteria, false);
if (bestProvider != null) {
location = locationManager.getLastKnownLocation(bestProvider);
if (locationManager.isProviderEnabled(bestProvider) && locationListener == null) {
locationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
float distance = location.distanceTo(placePickerFragment.getLocation());
if (distance >= LOCATION_CHANGE_THRESHOLD) {
placePickerFragment.setLocation(location);
placePickerFragment.loadData(true);
}
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
};
locationManager.requestLocationUpdates(bestProvider, 1, LOCATION_CHANGE_THRESHOLD,
locationListener, Looper.getMainLooper());
}
}
if (location == null) {
String model = Build.MODEL;
if (model.equals("sdk") || model.equals("google_sdk") || model.contains("x86")) {
// this may be the emulator, pretend we're in an exotic place
location = SAN_FRANCISCO_LOCATION;
}
}
if (location != null) {
placePickerFragment.setLocation(location);
placePickerFragment.setRadiusInMeters(SEARCH_RADIUS_METERS);
placePickerFragment.setSearchText(SEARCH_TEXT);
placePickerFragment.setResultsLimit(SEARCH_RESULT_LIMIT);
placePickerFragment.loadData(false);
} else {
onError(getResources().getString(R.string.no_location_error), true);
}
} catch (Exception ex) {
onError(ex);
}
}
}
@Override
protected void onStop() {
super.onStop();
if (locationListener != null) {
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.removeUpdates(locationListener);
locationListener = null;
}
}
private void onError(Exception error) {
onError(error.getLocalizedMessage(), false);
}
private void onError(String error, final boolean finishActivity) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(R.string.error_dialog_title).
setMessage(error).
setPositiveButton(R.string.error_dialog_button_text, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
if (finishActivity) {
finishActivity();
}
}
});
builder.show();
}
private void finishActivity() {
ScrumptiousApplication app = (ScrumptiousApplication) getApplication();
if (FRIEND_PICKER.equals(getIntent().getData())) {
if (friendPickerFragment != null) {
app.setSelectedUsers(friendPickerFragment.getSelection());
}
} else if (PLACE_PICKER.equals(getIntent().getData())) {
if (placePickerFragment != null) {
app.setSelectedPlace(placePickerFragment.getSelection());
}
}
setResult(RESULT_OK, null);
finish();
}
}