Android Open Source - droidcon Subreddit Activity

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License

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

package com.timehop.droidcon2014retrofitsample;
/* w  w  w.  j  a  va2  s.  c om*/
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

import com.timehop.droidcon2014retrofitsample.data.reddit.RedditService;
import com.timehop.droidcon2014retrofitsample.data.reddit.model.RedditLink;
import com.timehop.droidcon2014retrofitsample.data.reddit.model.RedditListing;
import com.timehop.droidcon2014retrofitsample.data.reddit.model.RedditObject;
import com.timehop.droidcon2014retrofitsample.data.reddit.model.RedditResponse;
import com.timehop.droidcon2014retrofitsample.ui.LinkAdapter;

import retrofit.Callback;
import retrofit.RetrofitError;
import retrofit.client.Response;

public class SubredditActivity extends Activity {
  public static final String EXTRA_SUBREDDIT = "subreddit";
  private LinkAdapter mLinkAdapter;
    private ProgressDialog mProgressDialog;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    String subreddit = getIntent().getStringExtra(EXTRA_SUBREDDIT);
    setContentView(R.layout.activity_subreddit);

    ListView mListView = (ListView) findViewById(android.R.id.list);
    mLinkAdapter = new LinkAdapter(this);
    mListView.setAdapter(mLinkAdapter);
    mListView.setOnItemClickListener(
        new AdapterView.OnItemClickListener() {
          @Override
          public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            showComments(mLinkAdapter.getItem(position));
          }
        });

    mProgressDialog = new ProgressDialog(this);
    mProgressDialog.setMessage("Loading subreddit...");
    mProgressDialog.setCancelable(false);
    mProgressDialog.show();

    RedditService.Implementation.get().getSubreddit(subreddit,
        new Callback<RedditResponse<RedditListing>>() {
          @Override
          public void success(RedditResponse<RedditListing> listing, Response response) {
            if (isDestroyed()) return;
            mProgressDialog.dismiss();
            onListingReceived(listing);
          }

          @Override
          public void failure(RetrofitError error) {
            if (isDestroyed()) return;
            mProgressDialog.dismiss();
            new AlertDialog.Builder(SubredditActivity.this)
                .setMessage("Loading failed :(")
                .setCancelable(false)
                .setNeutralButton("OK", new DialogInterface.OnClickListener() {
                  @Override
                  public void onClick(DialogInterface dialog, int which) {
                    finish();
                  }
                })
                .show();
          }
        });
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    mProgressDialog.dismiss();
  }

  private void showComments(RedditLink item) {
    Intent intent = new Intent(this, CommentsActivity.class);
    intent.putExtra(CommentsActivity.EXTRA_SUBREDDIT, item.getSubreddit());
    intent.putExtra(CommentsActivity.EXTRA_LINK_ID, item.getId());
    startActivity(intent);
  }

  private void onListingReceived(RedditResponse<RedditListing> listing) {
    mLinkAdapter.clear();
    for (RedditObject redditObject : listing.getData().getChildren()) {
      RedditLink link = (RedditLink) redditObject;
      mLinkAdapter.add(link);
    }
  }
}
Java Source Code List
