gistfile1.java

package com.twistedequations.youtubevideolist;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;

import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {
  
	ListView videoList;
	ArrayList<String> videoArrayList = new ArrayList<String>();
	ArrayAdapter<String> videoAdapter;
	Context context;
	String feedUrl = "http://gdata.youtube.com/feeds/api/users/twistedequations/uploads?v=2&alt=jsonc&start-index=1&max-results=30";

	@Override
	protected void onCreate(Bundle savedInstanceState) 
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		context = this;
		videoList = (ListView) findViewById(R.id.videoList);
		videoAdapter = new ArrayAdapter<String>(this, R.layout.video_list_item, videoArrayList);
		videoList.setAdapter(videoAdapter);
		
		VideoListTask loaderTask = new VideoListTask();
		loaderTask.execute();
		
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	
	public class VideoListTask extends AsyncTask<Void, Void, Void>{

		ProgressDialog dialog;
		@Override
		protected void onPreExecute() 
		{
			dialog = new ProgressDialog(context);
			dialog.setTitle("Loading Videos");
			dialog.show();
			super.onPreExecute();
		}

		@Override
		protected Void doInBackground(Void... params) 
		{
			HttpClient client = new DefaultHttpClient();
			HttpGet getRequest = new HttpGet(feedUrl);
			
			try 
			{
				HttpResponse responce = client.execute(getRequest);
				StatusLine statusLine = responce.getStatusLine();
				int statusCode = statusLine.getStatusCode();
				
				if(statusCode != 200)
				{
					return null;
				}
				
				InputStream jsonStream = responce.getEntity().getContent();
				BufferedReader reader = new BufferedReader(new InputStreamReader(jsonStream));
				StringBuilder builder = new StringBuilder();
				String line;
				while((line = reader.readLine())!=null)
				{
					builder.append(line);
				}
				
				String jsonData = builder.toString();
				
				JSONObject json = new JSONObject(jsonData);
				JSONObject data = json.getJSONObject("data");
				JSONArray items = data.getJSONArray("items");
				
				for(int i =0; i<items.length(); i++)
				{
					JSONObject video = items.getJSONObject(i);
					videoArrayList.add(video.getString("title"));
				}
				
				
			}
			catch (ClientProtocolException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			} 
			catch (IOException e) 
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			catch (JSONException e) 
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
			return null;
		}

		@Override
		protected void onPostExecute(Void result) {
			dialog.dismiss();
			videoAdapter.notifyDataSetChanged();
			super.onPostExecute(result);
		}
	}

}