Android Open Source - InstagramViewer Photos Activity

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Back to project page InstagramViewer.

License

The source code is released under:

MIT License

Java Source Code

package com.codepath.instagramviewer;
/*from  w ww  .ja  v  a2  s .c  o  m*/
import java.text.NumberFormat;
import java.util.ArrayList;

import org.apache.http.Header;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.JsonHttpResponseHandler;

import eu.erikw.PullToRefreshListView;
import eu.erikw.PullToRefreshListView.OnRefreshListener;


public class PhotosActivity extends Activity {
  
  public static final String INSTAGRAM_FETCH_ENDPOINT_URL = "https://api.instagram.com/v1/media/popular?client_id=";
  public static final String CLIENT_ID = "549e2c1771f84accaeaa27e4707ae3ec"; 
  private ArrayList<InstagramPhoto> photos;
  private InstagramPhotoAdapter aPhotos;
  private PullToRefreshListView lvPhotos;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_photos);
        fetchPopularPhotos();
    }


    private void fetchPopularPhotos() {
      photos = new ArrayList<InstagramPhoto>(); 
      
      // Create adapter and bind it to the data from list
      aPhotos = new InstagramPhotoAdapter(this, photos);
      
      // Populate the data in the ListView
      lvPhotos = (PullToRefreshListView)findViewById(R.id.lvPhotos);
      // Set a listener to be invoked when the list should be refreshed.
        lvPhotos.setOnRefreshListener(new OnRefreshListener() {
            @Override
            public void onRefresh() {
                // Your code to refresh the list here.
                // Make sure you call listView.onRefreshComplete() when
                // once the network request has completed successfully.
                refreshList();
//                aPhotos.notifyDataSetChanged();
                
        lvPhotos.postDelayed(new Runnable() {
        
                  
                  @Override
                  public void run() {
                    lvPhotos.onRefreshComplete();
                  }
                }, 3000);
                
                
            }
        });
      
      // Set adapter to the ListView
      lvPhotos.setAdapter(aPhotos);
      refreshList();      
  }
    
    
    private void refreshList(){

      // { "data" => [x] => "images" => "standard_resolution" => "url" }
    
      // Setup popular url endpoint
      String popularPhotosURL = INSTAGRAM_FETCH_ENDPOINT_URL + CLIENT_ID;
      
      // Network Client
      AsyncHttpClient httpClient = new AsyncHttpClient();
      httpClient.get(popularPhotosURL, new JsonHttpResponseHandler(){
        // Handle callback response
        @Override
        public void onSuccess(int statusCode, Header[] headers,JSONObject response) {
          
          JSONArray photosJSON = null;
          try{
            photos.clear();
            photosJSON = response.getJSONArray("data");
            for(int count = 0; count < photosJSON.length(); count++){
              JSONObject photoJSON = photosJSON.getJSONObject(count);
              if (photoJSON != null){
                InstagramPhoto photo = new InstagramPhoto();
                if (photoJSON.has("user") && photoJSON.getJSONObject("user") != null){
                  photo.setUsername(photoJSON.getJSONObject("user").getString("username"));
                  if (photoJSON.getJSONObject("user").has("profile_picture") 
                      && photoJSON.getJSONObject("user").getString("profile_picture") != null){
                    photo.setUserProfilePicUrl(photoJSON.getJSONObject("user").getString("profile_picture"));
                  }
                }                
                if (photoJSON.get("caption") != null
                    && photoJSON.get("caption") instanceof org.json.JSONObject ){
                  photo.setCaption(photoJSON.getJSONObject("caption").getString("text"));
                }
                
                // get image related info
                photo.setCreatedTime(photoJSON.getLong("created_time"));
                photo.setImageUrl(photoJSON.getJSONObject("images").getJSONObject("standard_resolution").getString("url"));
                photo.setImageHeight(photoJSON.getJSONObject("images").getJSONObject("standard_resolution").getInt("height"));
                
                // Formatting the likesCount in Numeric readable format delimited with comma for thousands mark
                int likesCount = photoJSON.getJSONObject("likes").getInt("count");
                NumberFormat formatter = NumberFormat.getCurrencyInstance();
                String formattedLikesCount = formatter.format(likesCount);
                photo.setLikesCount(formattedLikesCount.substring(1, formattedLikesCount.indexOf(".")));
                
                // get comments - last & second-last
                if (photoJSON.get("comments") != null 
                    && photoJSON.getJSONObject("comments").get("data") != null){
                  JSONArray commentsArray = photoJSON.getJSONObject("comments").getJSONArray("data");
                  
                  // last comment
                  if(commentsArray.get(commentsArray.length() - 1) != null){
                    JSONObject lastComment = commentsArray.getJSONObject(commentsArray.length() - 1);
                    photo.setLastCommentUsername(lastComment.getJSONObject("from").getString("username"));
                    photo.setLastComment(lastComment.getString("text"));
                  }
                  
                  // second last comment
                  if(commentsArray.get(commentsArray.length() - 2) != null){
                    JSONObject lastComment = commentsArray.getJSONObject(commentsArray.length() - 2);
                    photo.setSecondLastCommentUsername(lastComment.getJSONObject("from").getString("username"));
                    photo.setSecondLastComment(lastComment.getString("text"));
                  }
                  
                  
                }
                
                
                photos.add(photo);
              }
            }
            aPhotos.notifyDataSetChanged();
          }
          catch(JSONException exception){
            exception.printStackTrace();
          }
          
        }
        
        @Override
        public void onFailure(int statusCode, Header[] headers,
            Throwable throwable, JSONObject errorResponse) {
          super.onFailure(statusCode, headers, throwable, errorResponse);
        }
      }); 
    }


  @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.photos, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
  
}

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