Startnewactivity

package app.toptweets.android.example.com.toptweets;


import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import com.twitter.sdk.android.core.Callback;
import com.twitter.sdk.android.core.Result;
import com.twitter.sdk.android.core.TwitterApiClient;
import com.twitter.sdk.android.core.TwitterCore;
import com.twitter.sdk.android.core.TwitterException;
import com.twitter.sdk.android.core.models.Search;
import com.twitter.sdk.android.core.models.Tweet;
import com.twitter.sdk.android.core.services.SearchService;
import com.twitter.sdk.android.tweetcomposer.TweetComposer;
import com.twitter.sdk.android.tweetui.CompactTweetView;
import com.twitter.sdk.android.tweetui.TweetViewAdapter;

import java.util.Arrays;
import java.util.Comparator;
import java.util.List;

import io.fabric.sdk.android.Fabric;


/**
 * A simple {@link Fragment} subclass.
 */
public class Tweets extends Fragment {


    List<Tweet> tweets2 = null;
    TweetViewAdapter adapter;

    public Tweets() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {


        // Inflate the layout for this fragment

        View root = inflater.inflate(R.layout.fragment_tweets, container, false);

        ListView tweetLV = (ListView) root.findViewById(R.id.list_tweets);
        adapter = new TweetViewAdapter<CompactTweetView>(getActivity());
        tweetLV.setAdapter(adapter);

        tweetLV.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                String hashtag = adapter.getItem(i);
                Intent intent = new Intent(getActivity(), DetailActivity.class)
                        .putExtra(Intent.EXTRA_TEXT, hashtag);
                startActivity(intent);
            }
        });




        return root;
    }

    private void updateTweet() {
        LoadTweets loadTweets = new LoadTweets();
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
        String hashtag = prefs.getString(getString(R.string.pref_hashtag_key),
                getString(R.string.pref_hashtag_default));
        Log.e("HASHTAG",hashtag);
        loadTweets.execute(hashtag);
    }

    @Override
    public void onStart() {

        super.onStart();
        updateTweet();

    }

    @Override
    public void onResume() {

        super.onResume();


    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch(item.getItemId()) {
            case R.id.action_refresh: {

                updateTweet();
                return true;
            }
            case R.id.action_add_tweet:{
                Fabric.with(getActivity(), new TweetComposer());
                TweetComposer.Builder builder = new TweetComposer.Builder(getActivity())
                        .text("just setting up my Fabric.")
                   ;

                builder.show();
            }
            default:return super.onOptionsItemSelected(item);

        }

    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.tweets_refresh, menu);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
    }



    public class LoadTweets extends AsyncTask<String, Void, List<Tweet>> {


        @Override
        protected List<Tweet> doInBackground(String... params) {
            if (params.length == 0) {
                return null;
            }


            TwitterApiClient twitterApiClient = TwitterCore.getInstance().getApiClient();
            final SearchService service = twitterApiClient.getSearchService();


            service.tweets(params[0], null, null, null, "popular", 100, null, null,
                    null, true, new Callback<Search>() {
                        @Override
                        public void success(Result<Search> searchResult) {
                            final List<Tweet> tweets = searchResult.data.tweets;
                            if (tweets.isEmpty()) {
                                Log.e("Islam", "Empty");
                                Toast toast = Toast.makeText(getActivity(), "no tweets with this hashtag", Toast.LENGTH_LONG);
                                toast.show();


                            } else {
                                Log.e("Islam", String.valueOf(tweets.size()));


                                Tweet tweetsArray[] = new Tweet[tweets.size()];
                                tweets.toArray(tweetsArray);


                                Comparator<Tweet> comparator = new Comparator<Tweet>() {

                                    @Override
                                    public int compare(Tweet o1, Tweet o2) {
                                        return ((Integer) o2.retweetCount).compareTo((Integer) o1.retweetCount);
                                    }
                                };
                                Arrays.sort(tweetsArray, comparator);


                                tweets2 = Arrays.asList(tweetsArray);

                                adapter.getTweets().clear();
                                adapter.getTweets().addAll(tweets2);
                                adapter.notifyDataSetChanged();
                                Log.e("ADAPTER", String.valueOf(adapter.getTweets().size()));


                            }
                        }

                        @Override
                        public void failure(TwitterException e) {
                            Log.e("Islam", "Failed");
                            Toast toast = Toast.makeText(getActivity(), "Failed to load Tweets", Toast.LENGTH_LONG);
                            toast.show();

                        }
                    });
            return tweets2;
        }

        @Override
        protected void onPostExecute(List<Tweet> tweets) {
            if (tweets != null) {
               adapter.getTweets().clear();
                for (Tweet tweet : tweets) {
                    adapter.getTweets().add(tweet);
                    adapter.notifyDataSetChanged();

                }
            }
        }
    }
}