Android Open Source - SimpleTwitterClient Tweet

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License

The source code is released under:
MIT License
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Java Source Code

package com.nickrasband.simpletwitterclient.models;
/*w w  w .ja  va2 s  . com*/
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Locale;

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

import android.text.format.DateUtils;
import android.util.Log;

import com.activeandroid.Model;
import com.activeandroid.annotation.Column;
import com.activeandroid.annotation.Table;

@Table(name = "Tweets")
public class Tweet extends Model {
  
  private static final String JSON_PARSING = "JSON_PARSING";
  
  // This format parses dates of this form: Wed Aug 27 13:08:45 +0000 2008
  private static final String TWITTER_TIME_FORMAT = "EEE MMM dd HH:mm:ss ZZZ yyyy";
  
  @Column(name = "message")
  private String message;
  public String getMessage() {
    return message;
  }
  
  @Column(name = "tweet_timestamp")
  private String tweetTimestamp;
  
  // Convert the timestamp into a relative time such as "3 days ago".
  // 
  public String getTimestamp() {
    Log.d("TIME", tweetTimestamp);
    
    SimpleDateFormat dateFormat = new SimpleDateFormat(TWITTER_TIME_FORMAT, Locale.US);
    Date date;
    try {
      date = dateFormat.parse(tweetTimestamp);
    } catch (ParseException e) {
      return "Unknown date";
    }
    
    return DateUtils.getRelativeDateTimeString(getContext(), 
        date.getTime(), DateUtils.SECOND_IN_MILLIS, DateUtils.YEAR_IN_MILLIS, 0).toString();
  }
  
  @Column(name = "User")
  private User user;
  public User getUser() {
    return user;
  }
  
  @Column(name = "tweet_id")
  private String tweetId;
  public long getTweetId() {
    return Long.parseLong(tweetId);
  }
  
  // Default constructor required by ActiveAndroid.
  public Tweet() {
    super();
  }
  
  public Tweet(User user, String message, String tweetTimestamp, String tweetId) {
    this.user = new User(user);
    this.message = message;
    this.tweetTimestamp = tweetTimestamp;
    this.tweetId = tweetId;
  }
  
  public Tweet(JSONObject tweet) {
    
    setMessage(tweet);
    setTweetId(tweet);
    setTimestamp(tweet);
    
    // Time to access the user object within the tweet.
    try {
      JSONObject jsonUser = tweet.getJSONObject("user");
      user = new User(jsonUser);
    }
    catch (JSONException e) {
      Log.d(JSON_PARSING, "Failed to parse the JSON user object.");
    }    
  }
  
  private void setTweetId(JSONObject tweet) {
    try {
      tweetId = tweet.getString("id_str");
    }
    catch (JSONException e) {
      tweetId = "0";
    }
  }

  private void setMessage(JSONObject tweet) {
    try {
      message = tweet.getString("text");
    }
    catch (JSONException e) {
      Log.d(JSON_PARSING, "Failed to parse tweet text.");
      message = "";
    }
  }
  
  private void setTimestamp(JSONObject user) {
    try {
      tweetTimestamp = user.getString("created_at");
    }
    catch (JSONException e) {
      Log.d(JSON_PARSING, "Failed to parse tweet timestamp.");
      tweetTimestamp = "";
    }
  }
  
  
  
  public static ArrayList<Tweet> tweetsFromJsonArray(JSONArray tweets) {
    
    ArrayList<Tweet> tweetList = new ArrayList<Tweet>(); 
    for (int i = 0; i < tweets.length(); ++i) {
      // Attempt to access the user object.
      try {
        JSONObject tweet = (JSONObject)tweets.get(i);
        tweetList.add(new Tweet(tweet));
      }
      catch (JSONException e) {
        Log.d(JSON_PARSING, "Failed to access tweet object from JSONArray.");
      }
    }
    
    return tweetList;
  }
}
Java Source Code List
