Android Open Source - Broadsheet.ie-Android Post List Endless Adapter

• Back to App/blog  ↑

From Project

Back to project page Broadsheet.ie-Android.

License

The source code is released under:

Copyright (c) 2013 Karl Monaghan (http://karlmonaghan.com/) Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Soft...

Java Source Code

package ie.broadsheet.app.adapters;
/* w w  w  .  j  a  va2  s  . co  m*/
import ie.broadsheet.app.BaseFragmentActivity;
import ie.broadsheet.app.BroadsheetApplication;
import ie.broadsheet.app.R;
import ie.broadsheet.app.model.json.Post;
import ie.broadsheet.app.model.json.PostList;
import ie.broadsheet.app.requests.PostListRequest;
import android.content.Context;
import android.util.Log;

import com.commonsware.cwac.endless.EndlessAdapter;
import com.octo.android.robospice.persistence.DurationInMillis;
import com.octo.android.robospice.persistence.exception.SpiceException;
import com.octo.android.robospice.request.listener.RequestListener;

public class PostListEndlessAdapter extends EndlessAdapter {
    public interface PostListLoadedListener {
        public void onPostListLoaded();
    }

    private PostListLoadedListener postListLoadedListener;

    private static final String TAG = "PostListEndlessAdapter";

    private boolean hasMore = true;

    private boolean loaded = false;

    private int currentPage = 0;

    private String searchTerm;

    private PostListRequest postListRequest;

    public PostListEndlessAdapter(Context context) {
        super(context, new PostListAdapter(context), R.layout.post_list_load_more);

        setRunInBackground(false);
    }

    @Override
    protected boolean cacheInBackground() throws Exception {
        if (hasMore) {
            currentPage++;
            fetchPosts();
        }

        return hasMore;
    }

    @Override
    protected void appendCachedData() {

    }

    public boolean isLoaded() {
        return loaded;
    }

    public void setLoaded(boolean loaded) {
        this.loaded = loaded;
    }

    public String getSearchTerm() {
        return searchTerm;
    }

    public void setSearchTerm(String searchTerm) {
        this.searchTerm = searchTerm;
    }

    public int getCurrentPage() {
        return currentPage;
    }

    public PostListLoadedListener getPostListLoadedListener() {
        return postListLoadedListener;
    }

    public void setPostListLoadedListener(PostListLoadedListener mListener) {
        this.postListLoadedListener = mListener;
    }

    public void reset() {
        loaded = false;
        hasMore = true;
        searchTerm = null;
        currentPage = 1;
    }

    public void fetchPosts() {
        if (postListRequest == null) {
            postListRequest = new PostListRequest();

            postListRequest.setPage(currentPage);
            postListRequest.setSearchTerm(searchTerm);

            BaseFragmentActivity activity = (BaseFragmentActivity) getContext();

            activity.getSpiceManager().execute(postListRequest, postListRequest.generateUrl(),
                    DurationInMillis.ONE_MINUTE, new PostListListener());
        }
    }

    // ============================================================================================
    // INNER CLASSES
    // ============================================================================================

    public final class PostListListener implements RequestListener<PostList> {

        @Override
        public void onRequestFailure(SpiceException spiceException) {
            Log.d(TAG, "Failed to get results");

            BaseFragmentActivity activity = (BaseFragmentActivity) getContext();

            hasMore = false;
            onDataReady();

            activity.showError(activity.getString(R.string.post_list_load_problem));
        }

        @Override
        public void onRequestSuccess(final PostList result) {
            Log.d(TAG, "we got results");

            loaded = true;

            hasMore = (result.getCount_total() > result.getCount());

            BroadsheetApplication app = (BroadsheetApplication) PostListEndlessAdapter.this.getContext()
                    .getApplicationContext();
            if (PostListEndlessAdapter.this.currentPage == 1) {
                app.setPosts(null);
                ((PostListAdapter) getWrappedAdapter()).clear();
            }
            app.setPosts(result.getPosts());

            // ((PostListAdapter) getWrappedAdapter()).addAll(result.getPosts());
            PostListAdapter adapter = (PostListAdapter) getWrappedAdapter();

            for (Post post : result.getPosts()) {
                adapter.add(post);
            }

            onDataReady();

            postListRequest = null;

            PostListEndlessAdapter.this.postListLoadedListener.onPostListLoaded();

            app.getTracker().sendView("Post List Page" + Integer.toString(PostListEndlessAdapter.this.currentPage));

            if (result.getCount_total() == 0) {
                BaseFragmentActivity activity = (BaseFragmentActivity) getContext();
                activity.showError(activity.getString(R.string.post_list_no_matching_posts));
            }
        }
    }
}

Java Source Code List

• Back to App/blog  ↑