.png)
Quick watch on SwipeRefreshLayout (Tutorial)
After getting update in android support v4, I thought lets check it out. And believe me it is very light and very simple to implement. First of all update Android Support Library from SDK manager. The SwipeRefreshLayout works with Vertical swipe gesture. Lets go through tutorial. Please dont go through coding standards because this is not deep dive ;).
Create xml with SwipeRefreshLayout.
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
</android.support.v4.widget.SwipeRefreshLayout>
Create MainActivity.java
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();
}
}
/**
* A place holder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
private SwipeRefreshLayout layout;
String[] values = new String[] { "Android", "iPhone", "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2" };
ArrayList<String> list = new ArrayList<String>();
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
layout = (SwipeRefreshLayout) inflater.inflate(R.layout.fragment_main, container, false);
final ListView listView = (ListView) layout.findViewById(R.id.listview);
for (int i = 0; i < values.length; i++) {
list.add(values[i]);
}
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, list);
listView.setAdapter(adapter);
layout.setColorScheme(android.R.color.holo_green_dark, android.R.color.holo_orange_dark, android.R.color.holo_blue_dark,
android.R.color.holo_red_dark);
layout.setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh() {
Log.e(getClass().getSimpleName(), "refresh");
for (int i = 0; i < values.length; i++) {
list.add(values[i]);
}
adapter.notifyDataSetInvalidated();
new GetLinks().execute();
}
});
return layout;
}
public class GetLinks extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... params) {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
layout.setRefreshing(false);
}
}
}
}
Note: This component should be parent view and support only one child.
