Android Open Source - android_twitter_client Twitter Rest Client

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.github.snambi.twitterclient.clients;
/*from  w  w w  . j a va 2  s . co  m*/
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import org.scribe.builder.api.Api;
import org.scribe.builder.api.TwitterApi;

import android.content.Context;

import com.codepath.oauth.OAuthBaseClient;
import com.github.snambi.twitterclient.models.Tweet;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;

/*
 * 
 * This is the object responsible for communicating with a REST API. 
 * Specify the constants below to change the API being communicated with.
 * See a full list of supported API classes: 
 *   https://github.com/fernandezpablo85/scribe-java/tree/master/src/main/java/org/scribe/builder/api
 * Key and Secret are provided by the developer site for the given API i.e dev.twitter.com
 * Add methods for each relevant endpoint in the API.
 * 
 * NOTE: You may want to rename this object based on the service i.e TwitterClient or FlickrClient
 * 
 */
public class TwitterRestClient extends OAuthBaseClient implements Serializable {
  
  private static final long serialVersionUID = 1551228791225134824L;

  public static final Class<? extends Api> REST_API_CLASS = TwitterApi.class; // Change this
  public static final String REST_URL = "https://api.twitter.com/1.1"; // Change this, base API URL
  public static final String REST_CONSUMER_KEY = "308Y6AhszvPZK1Tg9l7RDXf9Z";       // Change this
  public static final String REST_CONSUMER_SECRET = "xdRYse6QDDbWkE5bFA7xB5XsLwl6DWusTUSytx7TMge4LE1YNS"; // Change this
  public static final String REST_CALLBACK_URL = "oauth://twitterclientnambi"; // Change this (here and in manifest)

  public TwitterRestClient(Context context) {
    super(context, REST_API_CLASS, REST_URL, REST_CONSUMER_KEY, REST_CONSUMER_SECRET, REST_CALLBACK_URL);
  }
  
  public void getUserTimeline(String screenName, TweetsCounter counter, AsyncHttpResponseHandler responseHandler){
    getTweetsFromApi("statuses/user_timeline.json", counter, screenName, responseHandler);
  }
  
  public void getHomeTimeLine( TweetsCounter counter, AsyncHttpResponseHandler responseHandler ){
    getTweetsFromApi("statuses/home_timeline.json", counter, null, responseHandler);
  }
  
  public void getMentionsTimeline( TweetsCounter counter, AsyncHttpResponseHandler responseHandler) {
    getTweetsFromApi("statuses/mentions_timeline.json", counter, null, responseHandler);
  }
  
  public void getTweetsFromApi( String api, TweetsCounter counter, String screenName, AsyncHttpResponseHandler responseHandler ){
    //String apiUrl = getApiUrl("statuses/home_timeline.json");
    String apiUrl = getApiUrl(api);
    RequestParams params = null;
            
    if( counter.getMaxId() > 0){
      
      if( params == null ){
        params = new RequestParams();
      }
      params.put("max_id", counter.getMaxIdStr() );
    }
    if( screenName != null && !screenName.trim().equals("")){
      if( params == null ){
        params = new RequestParams();
      }
      params.put("screen_name", screenName);
    }
        
    if( params == null ){
      client.get(apiUrl, null, responseHandler);
    }else{
      client.get(apiUrl, params, responseHandler);
    }
    
  }
  
  
  public void getMyInfo(  AsyncHttpResponseHandler responseHandler){
    String api_url = getApiUrl("account/verify_credentials.json");
    client.get(api_url, responseHandler);
  }
  
  public void getUsersDetails( ArrayList<String> screenNames, AsyncHttpResponseHandler responseHandler ){
    String api_url = getApiUrl("/users/lookup.json");
    
    RequestParams params = new RequestParams();
    params.put("screen_name",  screenNames);
    client.get(api_url, params, responseHandler);
  }
  
  
  public void createTweet( String tweet, AsyncHttpResponseHandler responseHandler ){
    String api_url = getApiUrl("statuses/update.json");
    
    RequestParams params = new RequestParams();
    params.put("status", tweet);
    
    client.post(api_url, params, responseHandler);
  }

  

  /* 1. Define the endpoint URL with getApiUrl and pass a relative path to the endpoint
   *     i.e getApiUrl("statuses/home_timeline.json");
   * 2. Define the parameters to pass to the request (query or body)
   *    i.e RequestParams params = new RequestParams("foo", "bar");
   * 3. Define the request method and make a call to the client
   *    i.e client.get(apiUrl, params, handler);
   *    i.e client.post(apiUrl, params, handler);
   */
  
  
  /**
   * <code>TimelineCounter</code> keeps track of which tweets are downloaded and which need to be fetched.
   */
  public static  class TweetsCounter{
    
    // max value of the received tweets
    private long sinceId=0l;
    // min values of the received tweets 
    private long maxId=0l;
        
    public TweetsCounter(){
    }
    public long getSinceId() {
      return sinceId;
    }
    public String getSinceIdStr(){
      return ""+ sinceId;
    }
    public void setSinceId(long sinceId) {
      this.sinceId = sinceId;
    }
    public String getMaxIdStr(){
      return ""+ maxId;
    }
    public long getMaxId() {
      return maxId;
    }
    public void setMaxId(long maxId) {
      this.maxId = maxId;
    }
    public void setSinceIdMaxIdFrom( List<Tweet> tweets){
      if( tweets == null || tweets.size() == 0){
        return ;
      }
      
      // find the highest id and lowest id from the list
      long high=0;
      long low=0;
      
      for( Tweet t : tweets ){
        // special case, if "low" is 0 , then start from the first value
        if( low == 0){
          low = t.getUid();
        }
        if( t.getUid() <= low){
          low = t.getUid();
        }
        if( t.getUid() > high){
          high = t.getUid();
        }
      }
      
      if( high > getSinceId() ){
        setSinceId(high);
      }else if( getSinceId() == 0){
        // handle special case
        setSinceId(high);
      }
      if( low < getMaxId() ){
        setMaxId(low);
      }else if( getMaxId() == 0){
        setMaxId(low);
      }
    }
  }
}
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