ActionBar-PullToRefresh provides an easy way to add a modern version of the pull-to-refresh interaction to your application.
Please note that this is not an update to Android-PullToRefresh, this has been created from new. You should think of this as Android-PullToRefresh's younger, leaner cousin.
Please note that this is currently in a preview state. This basically means that the API is not fixed and you should expect changes between releases.
There are two sample applications, the stock sample which uses the standard library and is therefore has a minSdkVersion of 14. There is also a sample which uses the ActionBarSherlock extra so has a minSdkVersion of 7.
ActionBar-PullToRefresh has in-built support for:
- AbsListView derivatives (ListView & GridView).
- ScrollView
- WebView
If the View you want to use is not listed above, you can easily add support in your own code by providing a ViewDelegate. See the ViewDelegate section below for more info.
There are two ways to use this library.
This is the simplest method, as it's just two lines of code. You just need to create an instance of PullToRefreshAttacher, giving it the Activity and the View for which will scroll.
private PullToRefreshAttacher mPullToRefreshAttacher;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get View for which the user will scroll…
View scrollableView = findViewById(R.id.blah);
// Create a PullToRefreshAttacher instance
mPullToRefreshAttacher = PullToRefreshAttacher.get(this);
// Add the Refreshable View and provide the refresh listener
mPullToRefreshAttacher.addRefreshableView(scrollableView, this);
}See the ListView sample for more info.
Using a PullToRefreshLayout gives the library better control over the touch events, and should be used if you find that using the above method is not working correctly.
Examples of when you would use PullToRefreshLayout are:
- Clickable view with refreshable View
- Not being able to pull from 'empty' space within the refreshable view.
The first thing you need to do is wrap your refreshable view in a PullToRefreshLayout:
<uk.co.senab.actionbarpulltorefresh.library.PullToRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ptr_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<!-- Your content, here we're using a ScrollView -->
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</ScrollView>
</uk.co.senab.actionbarpulltorefresh.library.PullToRefreshLayout>Then in your Activity, get a PullToRefreshAttacher and give it to the PullToRefreshLayout, along with the OnRefreshListener.
private PullToRefreshAttacher mPullToRefreshAttacher;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create a PullToRefreshAttacher instance
mPullToRefreshAttacher = PullToRefreshAttacher.get(this);
// Retrieve the PullToRefreshLayout from the content view
PullToRefreshLayout ptrLayout = (PullToRefreshLayout) findViewById(R.id.ptr_layout);
// Give the PullToRefreshAttacher to the PullToRefreshLayout, along with a refresh listener.
ptrLayout.setPullToRefreshAttacher(mPullToRefreshAttacher, this);
}See the ScrollView sample for more info.
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One thing to note is that the PullToRefreshAttacher needs to be created in the onCreate() phase of the Activity. If you plan on using this library with Fragments then the best practice is for your Activity to create the PullToRefreshAttacher, and then have your fragments retrieve it from the Activity.
An example is provided in the Fragment & Tabs sample.
See the Customisation page for more information.
Copyright 2013 Chris Banes
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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http://www.apache.org/licenses/LICENSE-2.0
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