Java tutorial
/* * Copyright 2014 Luke Klinker * * 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.klinker.android.twitter.activities.drawer_activities.discover.trends; import android.app.Activity; import android.app.Fragment; import android.content.Context; import android.content.SharedPreferences; import android.location.Location; import android.os.Bundle; import android.util.Log; import android.util.TypedValue; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.Toast; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.api.GoogleApiClient; import com.google.android.gms.location.LocationServices; import com.klinker.android.twitter.R; import com.klinker.android.twitter.adapters.TrendsArrayAdapter; import com.klinker.android.twitter.data.sq_lite.HashtagDataSource; import com.klinker.android.twitter.settings.AppSettings; import com.klinker.android.twitter.activities.drawer_activities.DrawerActivity; import com.klinker.android.twitter.utils.Utils; import org.lucasr.smoothie.AsyncListView; import java.util.ArrayList; import twitter4j.GeoLocation; import twitter4j.ResponseList; import twitter4j.Trend; import twitter4j.Twitter; public class LocalTrends extends Fragment implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener { private GoogleApiClient mGoogleApiClient; private boolean connected = false; private Context context; private SharedPreferences sharedPrefs; private AppSettings settings; private AsyncListView listView; private View layout; @Override public void onAttach(Activity activity) { super.onAttach(activity); context = activity; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); sharedPrefs = context.getSharedPreferences("com.klinker.android.twitter_world_preferences", 0); settings = AppSettings.getInstance(context); layout = inflater.inflate(R.layout.trends_list_view, null); listView = (AsyncListView) layout.findViewById(R.id.listView); if (DrawerActivity.translucent) { if (Utils.hasNavBar(context)) { View footer = new View(context); footer.setOnClickListener(null); footer.setOnLongClickListener(null); ListView.LayoutParams params = new ListView.LayoutParams(ListView.LayoutParams.MATCH_PARENT, Utils.getNavBarHeight(context)); footer.setLayoutParams(params); listView.addFooterView(footer); listView.setFooterDividersEnabled(false); } } buildGoogleApiClient(); getTrends(); return layout; } protected synchronized void buildGoogleApiClient() { mGoogleApiClient = new GoogleApiClient.Builder(getActivity()).addConnectionCallbacks(this) .addOnConnectionFailedListener(this).addApi(LocationServices.API).build(); mGoogleApiClient.connect(); } Location mLastLocation; @Override public void onConnected(Bundle bundle) { Log.v("location", "connected"); connected = true; mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient); } @Override public void onConnectionSuspended(int i) { } @Override public void onConnectionFailed(ConnectionResult connectionResult) { Toast.makeText(context, getResources().getString(R.string.error), Toast.LENGTH_SHORT).show(); } public void getTrends() { new Thread(new Runnable() { @Override public void run() { try { Twitter twitter = Utils.getTwitter(context, DrawerActivity.settings); int i = 0; while (!connected && i < 5) { try { Thread.sleep(1500); } catch (Exception e) { } i++; } twitter4j.Trends trends; if (sharedPrefs.getBoolean("manually_config_location", false)) { trends = twitter.getPlaceTrends(sharedPrefs.getInt("woeid", 2379574)); // chicago to default } else { Location location = mLastLocation; ResponseList<twitter4j.Location> locations = twitter .getClosestTrends(new GeoLocation(location.getLatitude(), location.getLongitude())); trends = twitter.getPlaceTrends(locations.get(0).getWoeid()); } final ArrayList<String> currentTrends = new ArrayList<String>(); for (Trend t : trends.getTrends()) { String name = t.getName(); currentTrends.add(name); } ((Activity) context).runOnUiThread(new Runnable() { @Override public void run() { try { if (currentTrends != null) { listView.setAdapter(new TrendsArrayAdapter(context, currentTrends)); listView.setVisibility(View.VISIBLE); } else { Toast.makeText(context, getResources().getString(R.string.no_location), Toast.LENGTH_SHORT).show(); } LinearLayout spinner = (LinearLayout) layout.findViewById(R.id.list_progress); spinner.setVisibility(View.GONE); } catch (Exception e) { // not attached to activity } } }); HashtagDataSource source = HashtagDataSource.getInstance(context); for (String s : currentTrends) { Log.v("talon_hashtag", "trend: " + s); if (s.contains("#")) { // we want to add it to the auto complete Log.v("talon_hashtag", "adding: " + s); // could be much more efficient by querying and checking first, but I // just didn't feel like it when there is only ever 10 of them here source.deleteTag(s); // add it to the userAutoComplete database source.createTag(s); } } } catch (Throwable e) { e.printStackTrace(); ((Activity) context).runOnUiThread(new Runnable() { @Override public void run() { try { Toast.makeText(context, getResources().getString(R.string.no_location), Toast.LENGTH_SHORT).show(); } catch (Exception e) { // not attached to activity } } }); } } }).start(); } public int toDP(int px) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, px, getResources().getDisplayMetrics()); } }