com.minglang.pulltorefreshlibrary.listfragment.PullToRefreshBaseListFragment.java Source code

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Here is the source code for com.minglang.pulltorefreshlibrary.listfragment.PullToRefreshBaseListFragment.java

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/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.minglang.pulltorefreshlibrary.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.AbsListView;
import android.widget.ListView;

import com.minglang.pulltorefreshlibrary.PullToRefreshBase;

abstract class PullToRefreshBaseListFragment<T extends PullToRefreshBase<? extends AbsListView>>
        extends ListFragment {

    private T mPullToRefreshListView;

    @Override
    public final View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View layout = super.onCreateView(inflater, container, savedInstanceState);

        ListView lv = null;
        if (layout != null) {
            lv = (ListView) layout.findViewById(android.R.id.list);
        }
        ViewGroup parent = null;
        if (lv != null) {
            parent = (ViewGroup) lv.getParent();
        }

        // Remove ListView and add PullToRefreshListView in its place
        int lvIndex = 0;
        if (parent != null) {
            lvIndex = parent.indexOfChild(lv);
            parent.removeViewAt(lvIndex);
            mPullToRefreshListView = onCreatePullToRefreshListView(inflater, savedInstanceState);
            parent.addView(mPullToRefreshListView, lvIndex, lv.getLayoutParams());
        }

        return layout;
    }

    /**
     * @return The {@link PullToRefreshBase} attached to this ListFragment.
     */
    public final T getPullToRefreshListView() {
        return mPullToRefreshListView;
    }

    /**
     * Returns the {@link PullToRefreshBase} which will replace the ListView
     * created from ListFragment. You should override this method if you wish to
     * customise the {@link PullToRefreshBase} 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 PullToRefreshBase} which will replace the ListView.
     */
    protected abstract T onCreatePullToRefreshListView(LayoutInflater inflater, Bundle savedInstanceState);

}