Java tutorial
/* * 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. */ package com.tearoffcalendar.activities; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import android.app.Activity; import android.os.Build; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.ArrayAdapter; import android.widget.ListView; import com.example.android.lifecycle.R; public class FaceUpCardFragment extends ListFragment { OnHeadlineSelectedListener mCallback; private List<String> cardNames; private static final String TAG = "FaceUpCardFragment"; // 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 onCardSelected(Date date); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // We need to use a different list item layout for devices older than Honeycomb updateListView(); } @Override public void onStart() { super.onStart(); Log.v(TAG, "On start"); updateListView(); } @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 String string = cardNames.get(position); Log.v(TAG, "onListItemClick Card name: " + string); SimpleDateFormat dateFormat = new SimpleDateFormat(Card.DATE_FORMAT); try { Date convertedDate = dateFormat.parse(string); mCallback.onCardSelected(convertedDate); } catch (ParseException pe) { Log.e(TAG, pe.getMessage()); } // Set the item as checked to be highlighted when in two-pane layout getListView().setItemChecked(position, true); } public List<String> getCardNames() { return cardNames; } public void setCardNames(List<String> cardNames) { this.cardNames = cardNames; } public void resetCardNames() { this.cardNames = new ArrayList<String>(); updateListView(); } public void updateListView() { 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 Log.v(TAG, cardNames.toString()); setListAdapter(new ArrayAdapter<String>(getActivity(), layout, cardNames)); } }