Pull To Refresh AdapterViews for Android

This project aims to provide a reusable Pull to Refresh widget for Android. It is originally (loosely) based on Johan Nilsson's Library (mainly for graphics, strings and animations), and has been vastly improved since then.

Features

• Supports both Pulling Down from the top, and Pulling Up from the bottom
• Animated Scrolling for all devices (Tested on 1.6+)
• Works for all AbsListView. I've implemented both ListView and GridView.
• Works with ExpandableListView (thanks to Stefano Dacchille)
• Integrated End of List Listener ( setOnLastItemVisibleListener() )
• Maven Support (thanks to Stefano Dacchille)
• No longer shows the Tap to Refresh view when the AdapterView can not fill itself.

Repository at https://github.com/chrisbanes/Android-PullToRefresh.

Usage

Layout

<!--
  The PullToRefreshListView replaces a standard ListView widget.
  The ID CAN NOT be @+id/android:list
-->
<com.handmark.pulltorefresh.library.PullToRefreshListView
    android:id="@+id/pull_to_refresh_listview"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent" />

It can also be styled using XML, such as in the sample ExpandableListView Sample:

<com.handmark.pulltorefresh.library.PullToRefreshExpandableListView
    xmlns:ptr="http://schemas.android.com/apk/res/YOUR_APP_PACKAGE_NAME"
    android:id="@+id/pull_refresh_expandable_list"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    ptr:adapterViewBackground="@android:color/white"
    ptr:headerBackground="@android:color/darker_gray"
    ptr:headerTextColor="@android:color/white" />

Activity

// Set a listener to be invoked when the list should be refreshed.
PullToRefreshListView pullToRefreshView = (PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);
pullToRefreshView.setOnRefreshListener(new OnRefreshListener() {
    @Override
    public void onRefresh() {
        // Do work to refresh the list here.
        new GetDataTask().execute();
    }
});

private class GetDataTask extends AsyncTask<Void, Void, String[]> {
    ...
    @Override
    protected void onPostExecute(String[] result) {
        mListItems.addFirst("Added after refresh...");
        // Call onRefreshComplete when the list has been refreshed.
        pullToRefreshView.onRefreshComplete();
        super.onPostExecute(result);
    }
}

Pull Up to Refresh

By default this library is set to Pull Down to Refresh, but if you instead to Pull Up to Refresh you can do so via XML:

<com.handmark.pulltorefresh.library.PullToRefreshListView
    xmlns:ptr="http://schemas.android.com/apk/res/YOUR_APP_PACKAGE_NAME"
    android:id="@+id/pull_refresh_list"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    ptr:mode="pullUpFromBottom" />

You can even set the View to enable both Pulling Up and Pulling Down using the new 'both' setting. For example:

<com.handmark.pulltorefresh.library.PullToRefreshListView
    xmlns:ptr="http://schemas.android.com/apk/res/YOUR_APP_PACKAGE_NAME"
    android:id="@+id/pull_refresh_list"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    ptr:mode="both" />

Acknowledgments

• Stefano Dacchille
• Steve Lhomme

License

Licensed under the Apache License, Version 2.0