Implemented Android-PullToRefresh

Project home: https://github.com/chrisbanes/Android-PullToRefresh

Signed-off-by: Ricky Barrette <rickbarrette@gmail.com>

OSJ Forum/src/com/handmark/pulltorefresh/extras/listfragment/PullToRefreshListFragment.java

@@ -0,0 +1,88 @@
+package com.handmark.pulltorefresh.extras.listfragment;
+
+import android.os.Bundle;
+import android.support.v4.app.ListFragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ListView;
+
+import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
+import com.handmark.pulltorefresh.library.PullToRefreshListView;
+
+/**
+ * A sample implementation of how to the PullToRefreshListView with
+ * ListFragment. This implementation simply replaces the ListView that
+ * ListFragment creates with a new PullToRefreshListView. This means that
+ * ListFragment still works 100% (e.g. <code>setListShown(...)</code>).
+ * 
+ * The new PullToRefreshListView is created in the method
+ * <code>onCreatePullToRefreshListView()</code>. If you wish to customise the
+ * PullToRefreshListView then override this method and return your customised
+ * instance.
+ * 
+ * @author Chris Banes
+ * 
+ */
+public abstract class PullToRefreshListFragment extends ListFragment implements OnRefreshListener<ListView> {
+
+	private PullToRefreshListView mPullToRefreshListView;
+
+	/**
+	 * @return The {@link PullToRefreshListView} attached to this ListFragment.
+	 */
+	public final PullToRefreshListView getPullToRefreshListView() {
+		return mPullToRefreshListView;
+	}
+
+	@Override
+	public void onActivityCreated(final Bundle savedInstanceState) {
+		super.onActivityCreated(savedInstanceState);
+		getPullToRefreshListView().setOnRefreshListener(this);
+	}
+
+	/**
+	 * Returns the {@link PullToRefreshListView} which will replace the ListView
+	 * created from ListFragment. You should override this method if you wish to
+	 * customise the {@link PullToRefreshListView} from the default.
+	 * 
+	 * @param inflater
+	 *            - LayoutInflater which can be used to inflate from XML.
+	 * @param savedInstanceState
+	 *            - Bundle passed through from
+	 *            {@link ListFragment#onCreateView(LayoutInflater, ViewGroup, Bundle)
+	 *            onCreateView(...)}
+	 * @return The {@link PullToRefreshListView} which will replace the
+	 *         ListView.
+	 */
+	protected PullToRefreshListView onCreatePullToRefreshListView(final LayoutInflater inflater, final Bundle savedInstanceState) {
+		return new PullToRefreshListView(getActivity());
+	}
+
+	@Override
+	public final View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) {
+		final View layout = super.onCreateView(inflater, container, savedInstanceState);
+
+		final ListView lv = (ListView) layout.findViewById(android.R.id.list);
+		final ViewGroup parent = (ViewGroup) lv.getParent();
+
+		// Iterate through parent's children until we find the ListView, we need
+		// to do it this way as we need to find out the child index
+		for (int i = 0, z = parent.getChildCount(); i < z; i++) {
+			final View child = parent.getChildAt(i);
+
+			if (child == lv) {
+				// Remove the ListView first
+				parent.removeViewAt(i);
+
+				// Now create ListView, and add it in it's place...
+				mPullToRefreshListView = onCreatePullToRefreshListView(inflater, savedInstanceState);
+				parent.addView(mPullToRefreshListView, i, lv.getLayoutParams());
+				break;
+			}
+		}
+
+		return layout;
+	}
+
+}