import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;

/**
 * Created by Arshad on 09-06-2017.
 */

public class Tab1 extends Fragment {
    SharedPreference pref;
    ListView listView;
    ListItemAdapter listItemAdapter;
    //String[] names = {"Hrithik","Ranbir","AkshayKumar","Amir Khan","Shahidi Kapoor"};
    //int[] images = {R.drawable.index1,R.drawable.index2,R.drawable.index3,R.drawable.index4,R.drawable.index5};
    //int[] eventImages = {R.drawable.ev1,R.drawable.ev2,R.drawable.ev3,R.drawable.ev4,R.drawable.ev5};

    public String JSON_STRING;
    int offset = 0;

    int[] eventId;
    String[] startTime;
    String[] eventImage;
    String[] artistName;
    String[] propic;
    String[] eventName;
    boolean[] follow;

    private View mProgressView;
    private View mLoginFormView;

    ProgressBar loadingProgress;

    private boolean loading = true;





    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.tab1,container,false);
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        pref = new SharedPreference(getActivity());
        listView = (ListView)view.findViewById(R.id.listView);
        loadingProgress = new ProgressBar(getContext());

        listView.addFooterView(loadingProgress);

        mProgressView = view.findViewById(R.id.login_progress);
        mLoginFormView = view.findViewById(R.id.listView);

        getContents();

        listView.setOnScrollListener(new AbsListView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView absListView, int i) {

            }

            @Override
            public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                if(firstVisibleItem+visibleItemCount == totalItemCount && totalItemCount != 0){
                    if(loading==true){
                        loading = false;
                        getContents();
                    }
                }


            }

        });

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(getActivity (), "you can view the profile of :"+eventName[position], Toast.LENGTH_SHORT).show();

                String eventId = ((TextView) view.findViewById(R.id.eventId)).getText().toString();
                Intent intent = new Intent(getContext(),ViewEventActivity.class);
                intent.putExtra("eventId",eventId);
                startActivity(intent);


            }
        });






    }
    public void getContents(){
        class GetContents extends AsyncTask<Void,Void,String>{
            //ProgressDialog loading;
            @Override
            protected void onPreExecute() {
                //loading = ProgressDialog.show(getActivity(),"Loading..","Please wait",false,false);
                showProgress(true);

                super.onPreExecute();
            }

            @Override
            protected String doInBackground(Void... voids) {
                RequestHandler rh = new RequestHandler();
                String s = rh.sendGetRequest(Config.KEY_URL_GET_TIMELINE+offset,pref.getApiKey());
                offset = offset+7;
                return s;
            }

            @Override
            protected void onPostExecute(String s) {
                if(isAdded()){
                    getResources().getString(R.string.app_name);
                }
                super.onPostExecute(s);
                //loading.dismiss();
                showProgress(false);
                JSON_STRING = s;
                Log.v("RESPONSE:","response for timeline:"+JSON_STRING.toString());
                showResults();
            }
        }
        GetContents g = new GetContents();
        g.execute();
    }

    public void showResults(){
        try{
            JSONObject json = new JSONObject(JSON_STRING);
            boolean error = json.getBoolean("error");
            if(error==false){
                //listView.removeFooterView(loadingProgress);
                JSONArray items = json.getJSONArray("events");
                eventId = new int[items.length()];
                eventName = new String[items.length()];
                startTime = new String[items.length()];
                eventImage = new String[items.length()];
                artistName = new String[items.length()];
                propic = new String[items.length()];
                follow = new boolean[items.length()];
                for(int i=0;i<items.length();i++){
                    JSONObject c = items.getJSONObject(i);
                    eventId[i] = c.getInt("eventId");
                    eventName[i] = c.getString("eventName");
                    startTime[i] = c.getString("startTime");
                    eventImage[i] = c.getString("image");
                    artistName[i] = c.getString("artistName");
                    propic[i] = c.getString("proPic");
                    follow[i] = c.getBoolean("follow");
                }
                listItemAdapter = new ListItemAdapter(getActivity(),eventId,eventName,startTime,eventImage,artistName,propic,follow);
                listView.setAdapter(listItemAdapter);

                listItemAdapter.notifyDataSetChanged();
            }else{
                Toast.makeText(getActivity(), "Sorry, there is technical problem, please contact system admins", Toast.LENGTH_SHORT).show();
            }

        }catch(JSONException e){
            e.printStackTrace();
        }
    }


    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
    private void showProgress(final boolean show) {
        // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
        // for very easy animations. If available, use these APIs to fade-in
        // the progress spinner.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
            int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime);

            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
            mLoginFormView.animate().setDuration(shortAnimTime).alpha(
                    show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
                }
            });

            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mProgressView.animate().setDuration(shortAnimTime).alpha(
                    show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
                }
            });
        } else {
            // The ViewPropertyAnimator APIs are not available, so simply show
            // and hide the relevant UI components.
            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
        }
    }

}

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.squareup.picasso.Picasso;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.InputStream;
import java.util.HashMap;


/**
 * Created by Arshad on 25-05-2017.
 */

public class ListItemAdapter extends BaseAdapter {

    int[] eventId;
    String[] eventNames;
    String[] startTime;
    String[] eventImage;
    String[] artistName;
    String[] propic;
    boolean[] follow;




    Context context;
    ImageView imageViewLike;
//    ImageView imageView;
//    TextView textView;

    ImageView imageViewPropic;
    ImageView imageViewEvent;
    TextView textViewEventId,textViewEventName,textViewStartTime,textViewArtistName;


    public ListItemAdapter(Context context, int[] evetid, String[] eventnames, String[] starttime, String[] eventImage, String[] artistName, String[] propic, boolean[] follow){
        this.context = context;
        this.eventId = evetid;
        this.eventNames = eventnames;
        this.startTime = starttime;
        this.eventImage = eventImage;
        this.artistName = artistName;
        this.propic = propic;
        this.follow = follow;

    }

    @Override
    public int getCount() {
        return eventId.length;
    }

    @Override
    public Object getItem(int i) {
        return null;
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(final int i, View view, ViewGroup viewGroup) {
        LayoutInflater inflater = (LayoutInflater)context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        view = inflater.inflate(R.layout.list_items_announcements,null);
       // imageView  = (ImageView)view.findViewById(R.id.proImage);
        //imageViewEvent = (ImageView)view.findViewById(R.id.eventImage);
        //textView = (TextView)view.findViewById(R.id.aname);


        imageViewEvent = (ImageView) view.findViewById(R.id.eventImage);
        imageViewPropic = (ImageView)view.findViewById(R.id.proImage);

        textViewEventId = (TextView)view.findViewById(R.id.eventId);
        textViewEventName = (TextView)view.findViewById(R.id.eventName);
        textViewStartTime = (TextView)view.findViewById(R.id.textViewStarts);
        textViewArtistName = (TextView)view.findViewById(R.id.aname);
        imageViewLike = (ImageView) view.findViewById(R.id.likeImageView);

//
//        if(!eventImage[i].equals("") || eventImage[i]!=null) {
//            new DownloadImageTask().execute(eventImage[i]);
//        }


        String eveImage = "http://"+Config.IP_ADDRESS+"/"+eventImage[i];
        Picasso.with(context)
                .load(eveImage)
                .fit()
                .placeholder(R.drawable.loader)
                .error(R.drawable.default1)
                .into(imageViewEvent);
        //if(!propic[i].equals(""))
        //new DownloadImageTask2().execute(propic[i]);
        //new DownloadImageTask(R.id.profileImage,view).execute(propic[i]);



        String profilePic = "someimage";
        if(propic[i]!=null) {
            if (propic[i].length() < Config.DIRECTORY_IMAGE_MAX_SIZE)
                profilePic = "http://" + Config.IP_ADDRESS + "/" + propic[i];
            else
                profilePic = propic[i];
        }
        Picasso.with(context)
                .load(profilePic)
                .placeholder(R.drawable.default2)
                .error(R.drawable.default2)
                .into(imageViewPropic);

        textViewEventId.setText(String.valueOf(eventId[i]));
        textViewArtistName.setText(artistName[i]);
        textViewEventName.setText(eventNames[i]);
        textViewStartTime.setText(startTime[i]);
        boolean following = follow[i];

        if(following==false) {
            imageViewLike.setTag(R.drawable.ic_like);
            imageViewLike.setImageResource(R.drawable.ic_like);
        }else{
            imageViewLike.setTag(R.drawable.ic_liked);
            imageViewLike.setImageResource(R.drawable.ic_liked);
        }
}