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Code Issues Releases Wiki Activity

Add code for interfacing with the Twitter API

master
DjBushido 2014-04-07 14:12:45 -04:00
parent 7a7ed266f1
commit 5e5bfb04ec
6 changed files with 298 additions and 13 deletions
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13
HW5/src/edu/uncc/itcs4180/hw5/TwitterClient.java
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package edu.uncc.itcs4180.hw5;
import java.net.URL;
public class TwitterClient {
private final String API_KEY = "HuEbvsXOxQsKVmTneyilVtsV6";
private final String API_SECRET = "ZIJqmKEGoQUKLCIit15SKz6XIl4PP1xgDm1jVCIBSDhmImzFqk";
private final String URL_TOKEN = "https://api.twitter.com/oauth2/token";
private final String URL_API = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=";
}

93
HW5/src/edu/uncc/itcs4180/hw5/twitter/Tweet.java Normal file
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package edu.uncc.itcs4180.hw5.twitter;
// Code adapted from:
// https://github.com/Rockncoder/TwitterTutorial/blob/master/src/com/example/TwitterTutorial/Tweet.java
//
// We changed the field names to conform to Java standards
import com.google.gson.annotations.SerializedName;
public class Tweet {
@SerializedName("created_at")
private String dateCreated;
@SerializedName("id")
private String id;
@SerializedName("text")
private String text;
@SerializedName("in_reply_to_status_id")
private String inReplyToStatusId;
@SerializedName("in_reply_to_user_id")
private String inReplyToUserId;
@SerializedName("in_reply_to_screen_name")
private String inReplyToScreenName;
@SerializedName("user")
private TwitterUser user;
public String getDateCreated() {
return dateCreated;
}
public String getId() {
return id;
}
public String getInReplyToScreenName() {
return inReplyToScreenName;
}
public String getInReplyToStatusId() {
return inReplyToStatusId;
}
public String getInReplyToUserId() {
return inReplyToUserId;
}
public String getText() {
return text;
}
public void setDateCreated(String dateCreated) {
this.dateCreated = dateCreated;
}
public void setId(String id) {
this.id = id;
}
public void setInReplyToScreenName(String inReplyToScreenName) {
this.inReplyToScreenName = inReplyToScreenName;
}
public void setInReplyToStatusId(String inReplyToStatusId) {
this.inReplyToStatusId = inReplyToStatusId;
}
public void setInReplyToUserId(String inReplyToUserId) {
this.inReplyToUserId = inReplyToUserId;
}
public void setText(String text) {
this.text = text;
}
public void setUser(TwitterUser user) {
this.user = user;
}
public TwitterUser getUser() {
return user;
}
@Override
public String toString() {
return getText();
}
}

12
HW5/src/edu/uncc/itcs4180/hw5/twitter/TweetList.java Normal file
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package edu.uncc.itcs4180.hw5.twitter;
import java.util.ArrayList;
public class TweetList extends ArrayList<Tweet> {
/**
*
*/
private static final long serialVersionUID = 1L;
}

6
HW5/src/edu/uncc/itcs4180/hw5/twitter/TwitterAuthentication.java Normal file
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package edu.uncc.itcs4180.hw5.twitter;
public class TwitterAuthentication {
String tokenType;
String accessToken;
}

145
HW5/src/edu/uncc/itcs4180/hw5/twitter/TwitterClient.java Normal file
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package edu.uncc.itcs4180.hw5.twitter;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLEncoder;
import java.text.BreakIterator;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import com.google.gson.Gson;
import android.os.AsyncTask;
import android.util.Base64;
public class TwitterClient {
private final String API_KEY = "HuEbvsXOxQsKVmTneyilVtsV6";
private final String API_SECRET = "ZIJqmKEGoQUKLCIit15SKz6XIl4PP1xgDm1jVCIBSDhmImzFqk";
private final String URL_TOKEN = "https://api.twitter.com/oauth2/token";
private final String URL_API = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=";
// Code mimicked in large part from:
// https://github.com/Rockncoder/TwitterTutorial/blob/master/src/com/example/TwitterTutorial/MainActivity.java
public static TweetList getTweetList(String handle) {
TwitterClient tc = new TwitterClient();
try {
return tc.new TweetListDownloader().execute(handle).get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
private class TweetListDownloader extends AsyncTask<String, Void, TweetList> {
@Override
protected TweetList doInBackground(String... params) {
if (params.length > 0)
return getTweetList(params[0]);
else
return null;
}
private String getResponse(HttpRequestBase request) {
// Does all our HTTP work for us
StringBuilder sb = new StringBuilder();
try {
DefaultHttpClient client = new DefaultHttpClient(new BasicHttpParams());
HttpResponse response;
response = client.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
String reason = response.getStatusLine().getReasonPhrase();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
InputStream input = entity.getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(input));
String line = null;
while ((line = br.readLine()) != null)
sb.append(line);
} else
sb.append(reason);
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
return sb.toString();
}
private TwitterAuthentication responseToAuth(String response) {
TwitterAuthentication auth = null;
if (response != null && response.length() > 0) {
Gson gson = new Gson();
auth = gson.fromJson(response, TwitterAuthentication.class);
}
return auth;
}
private TweetList responseToTweets(String response) {
TweetList tweets = null;
if (response != null && response.length() > 0) {
Gson gson = new Gson();
// We have to use TweetList because ArrayList<Tweet>.class doesn't exist
tweets = gson.fromJson(response, TweetList.class);
}
return tweets;
}
private TweetList getTweetList(String handle) {
try {
// Set up our keys
String urlApiKey = URLEncoder.encode(API_KEY, "UTF-8");
String urlApiSecret = URLEncoder.encode(API_SECRET, "UTF-8");
String combined = urlApiKey + ":" + urlApiSecret;
String b64Encoded = Base64.encodeToString(combined.getBytes(), Base64.NO_WRAP);
// Get our token
HttpPost post = new HttpPost(URL_TOKEN);
post.setHeader("Authorization", "Basic " + b64Encoded);
post.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
post.setEntity(new StringEntity("grant_type=client_credentials"));
TwitterAuthentication auth = responseToAuth(getResponse(post));
// And now get our actual tweets list
HttpGet get = new HttpGet(URL_API + handle);
get.setHeader("Authorization", "Bearer " + auth.accessToken);
get.setHeader("Content-Type", "application/json");
return responseToTweets(getResponse(get));
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
}

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HW5/src/edu/uncc/itcs4180/hw5/twitter/TwitterUser.java Normal file
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package edu.uncc.itcs4180.hw5.twitter;
// Code copied from:
// https://github.com/Rockncoder/TwitterTutorial/blob/master/src/com/example/TwitterTutorial/TwitterUser.java
import com.google.gson.annotations.SerializedName;
public class TwitterUser {
@SerializedName("screen_name")
private String screenName;
@SerializedName("name")
private String name;
@SerializedName("profile_image_url")
private String profileImageUrl;
public String getProfileImageUrl() {
return profileImageUrl;
}
public String getScreenName() {
return screenName;
}
public void setProfileImageUrl(String profileImageUrl) {
this.profileImageUrl = profileImageUrl;
}
public void setScreenName(String screenName) {
this.screenName = screenName;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}