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PODownloading Tweets via JSON feed code not working
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  1. PODownloading Tweets via JSON feed code not working
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    copied!<p>I'm building my first android app - something that will display my tweets in a list.</p> <p>I managed to get the app working earlier, but the tweets would sometimes take a long time to download, and the app would become unresponsive or crash. </p> <p>I decided to add a thread to the app so the it wouldn't become unresponsive, but now it doesn't work at all :/ </p> <p>Does anyone know what's wrong? It's only my third day of learning java, and I can't seem to figure out what the problem is here. </p> <p>Here's the code:</p> <pre><code>package com.app.first; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import org.apache.http.HttpEntity; 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.JSONObject; import android.app.ListActivity; import android.app.ProgressDialog; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.widget.ArrayAdapter; public class Twitter extends ListActivity { public ProgressDialog pd = null; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); // Show the ProgressDialog on this thread pd = ProgressDialog.show(this, "Working..", "Downloading Data...", true, false); new LoadTwitterFeed().execute(); } public class LoadTwitterFeed extends AsyncTask&lt;String, Integer, String&gt; { String tweets[] = new String[9]; public String readTwitterFeed() { StringBuilder builder = new StringBuilder(); HttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet( "https://api.twitter.com/1/statuses/user_timeline.json?screen_name=jjmpsp&amp;include_rts=false&amp;count=10"); try { HttpResponse response = client.execute(httpGet); StatusLine statusLine = response.getStatusLine(); int statusCode = statusLine.getStatusCode(); if (statusCode == 200) { HttpEntity entity = response.getEntity(); InputStream content = entity.getContent(); BufferedReader reader = new BufferedReader( new InputStreamReader(content)); String line; while ((line = reader.readLine()) != null) { builder.append(line); } } else { Log.e(ParseJSON.class.toString(), "Failed to download file"); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return builder.toString(); } @Override protected String doInBackground(String... params) { // TODO Auto-generated method stub String readTwitterFeed = readTwitterFeed(); try { JSONArray jsonArray = new JSONArray(readTwitterFeed); for (int i = 0; i &lt; jsonArray.length(); i++) { JSONObject jsonObject = jsonArray.getJSONObject(i); tweets[i] = jsonObject.getString("text").toString(); } } catch (Exception e) { e.printStackTrace(); } setListAdapter(new ArrayAdapter&lt;String&gt;(Twitter.this, android.R.layout.simple_list_item_1, tweets)); return null; } @Override protected void onPostExecute(String result) { // what to do when the task ends. pd.hide(); } } } </code></pre>
 

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