android - 拉动刷新和加载更多列表视图，如 facebook

Question

我在这里使用滑动抽屉。在点击主页图标时，它显示 3 个标签
1) 我应该为标签申请哪个概念？
2）我想申请pulltoreferesh并loadmore在像facebook这样的列表视图中？因为您还看到，当向上滚动时，进度条会隐藏并请求取消。

Answer 1

public class ListDemo extends Fragment{
    ArrayAdapter<String> files;
    private LinkedList<String> mListItems;
    PullAndLoadListView lyt ;
    //  ListView lv1;

    // The data to be displayed in the ListView
    private String[] mNames = { "Fabian", "Carlos", "Alex", "Andrea", "Karla",
            "Freddy", "Lazaro", "Hector", "Carolina", "Edwin", "Jhon",
            "Edelmira", "Andres" };

    // The data to be displayed in the ListView
    private String[] mAnimals = { "Perro", "Gato", "Oveja", "Elefante", "Pez",
            "Nicuro", "Bocachico", "Chucha", "Curie", "Raton", "Aguila",
            "Leon", "Jirafa" };



    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        final View v = inflater.inflate(R.layout.tab_frag3_layout, container, false);
        mListItems = new LinkedList<String>();
        mListItems.addAll(Arrays.asList(mNames));
        lyt = (PullAndLoadListView)v.findViewById(R.id.tab_frag3_listview1);

        if (container == null) {
            return null;
        }

        files = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1,mListItems);
        lyt.setAdapter(files);
        lyt.setOnRefreshListener(new OnRefreshListener() {

            @Override
            public void onRefresh() {
                // TODO Auto-generated method stub
                new PullToRefreshDataTask().execute();
            }
        });
        lyt.setOnLoadMoreListener(new OnLoadMoreListener() {

            @Override
            public void onLoadMore() {
                // TODO Auto-generated method stub
                new LoadMoreDataTask().execute();
            }
        });
        return v;

    }
    private class LoadMoreDataTask extends AsyncTask<Void, Void, Void> {

        @Override
        protected Void doInBackground(Void... params) {

            if (isCancelled()) {
                return null;
            }

            // Simulates a background task
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
            }

            for (int i = 0; i < mAnimals.length; i++)
                mListItems.add(mAnimals[i]);

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            mListItems.add("Added after load more");

            // We need notify the adapter that the data have been changed
            files.notifyDataSetChanged();

            // Call onLoadMoreComplete when the LoadMore task, has finished
            lyt.onLoadMoreComplete();

            super.onPostExecute(result);
        }

        @Override
        protected void onCancelled() {
            // Notify the loading more operation has finished
            lyt.onLoadMoreComplete();
        }
    }

    private class PullToRefreshDataTask extends AsyncTask<Void, Void, Void> {

        @Override
        protected Void doInBackground(Void... params) {

            if (isCancelled()) {
                return null;
            }

            // Simulates a background task
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
            }

            for (int i = 0; i < mAnimals.length; i++)
                mListItems.addFirst(mAnimals[i]);

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            mListItems.addFirst("Added after pull to refresh");

            // We need notify the adapter that the data have been changed
            files.notifyDataSetChanged();

            // Call onLoadMoreComplete when the LoadMore task, has finished
            lyt.onRefreshComplete();

            super.onPostExecute(result);
        }

        @Override
        protected void onCancelled() {
            // Notify the loading more operation has finished
            lyt.onLoadMoreComplete();
        }
    }

}

here is source code of pull-to-refresh and load-more library.

Answer 2

使用这个库，我几天前使用过并且工作完美：

可刷新列表视图

Answer 3

我自己没有使用过这个库，它已经停产（2 个月前），但它看起来很棒，有例子和所有：

https://github.com/chrisbanes/Android-PullToRefresh/wiki/Quick-Start-Guide

从我读到的，基本上你需要用库的列表视图替换你自己的列表视图并导入 jar 文件，你很高兴;-)