br.com.expressobits.test.fragmentsui.HeadLinesFragment.java Source code

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Here is the source code for br.com.expressobits.test.fragmentsui.HeadLinesFragment.java

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package br.com.expressobits.test.fragmentsui;/*
                                             * Copyright (C) 2012 The Android Open Source Project
                                             *
                                             * 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.
                                             */

import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class HeadLinesFragment extends ListFragment {
    OnHeadlineSelectedListener mCallback;

    // The container Activity must implement this interface so the frag can deliver messages
    public interface OnHeadlineSelectedListener {
        /** Called by HeadlinesFragment when a list item is selected */
        public void onArticleSelected(int position);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // We need to use a different list item layout for devices older than Honeycomb
        int layout = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB
                ? android.R.layout.simple_list_item_activated_1
                : android.R.layout.simple_list_item_1;

        // Create an array adapter for the list view, using the Ipsum headlines array
        setListAdapter(new ArrayAdapter<String>(getActivity(), layout, Ipsum.Headlines));
    }

    @Override
    public void onStart() {
        super.onStart();

        // When in two-pane layout, set the listview to highlight the selected list item
        // (We do this during onStart because at the point the listview is available.)
        if (getFragmentManager().findFragmentById(R.id.article) != null) {
            getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        }
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        // This makes sure that the container activity has implemented
        // the callback interface. If not, it throws an exception.
        try {
            mCallback = (OnHeadlineSelectedListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement OnHeadlineSelectedListener");
        }
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        // Notify the parent activity of selected item
        mCallback.onArticleSelected(position);

        // Set the item as checked to be highlighted when in two-pane layout
        getListView().setItemChecked(position, true);
    }
}