Java tutorial
/* * Tweetings - Twitter client for Android * * Copyright (C) 2012-2013 RBD Solutions Limited <apps@tweetings.net> * Copyright (C) 2012 Mariotaku Lee <mariotaku.lee@gmail.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.dwdesign.tweetings.fragment; import java.util.List; import com.dwdesign.tweetings.R; import com.dwdesign.tweetings.loader.UserListTimelineLoader; import com.dwdesign.tweetings.model.ParcelableStatus; import com.dwdesign.tweetings.util.SynchronizedStateSavedList; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.support.v4.content.Loader; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; public class UserListTimelineFragment extends ParcelableStatusesListFragment { private boolean mIsStatusesSaved = false; private boolean isVisibleToUser = false; // Begin Sync Code private final BroadcastReceiver receiver = new BroadcastReceiver() { @Override public void onReceive(final Context context, final Intent intent) { final String action = intent.getAction(); if (BROADCAST_VOLUME_UP.equals(action)) { if (isVisible()) { int currentPosition = getListView().getFirstVisiblePosition(); if (currentPosition == 0) return; getListView().setSelection(currentPosition - 1); getListView().clearFocus(); } } else if (BROADCAST_VOLUME_DOWN.equals(action)) { if (isVisible()) { int currentPosition = getListView().getFirstVisiblePosition(); if (currentPosition == getListView().getCount() - 1) return; getListView().setSelection(currentPosition + 1); getListView().clearFocus(); } } } }; @Override public void setMenuVisibility(final boolean visible) { super.setMenuVisibility(visible); isVisibleToUser = visible; } @Override public void onResume() { super.onResume(); IntentFilter filter = new IntentFilter(); filter.addAction(BROADCAST_VOLUME_UP); filter.addAction(BROADCAST_VOLUME_DOWN); registerReceiver(receiver, filter); } @Override public void onPause() { super.onPause(); unregisterReceiver(receiver); } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setHasOptionsMenu(true); } @Override public void scrollToStatusId(long statusId) { } @Override public Loader<SynchronizedStateSavedList<ParcelableStatus, Long>> newLoaderInstance(final Bundle args) { int list_id = -1; long account_id = -1, max_id = -1, since_id = -1, user_id = -1; String screen_name = null, list_name = null; boolean is_home_tab = false; if (args != null) { list_id = args.getInt(INTENT_KEY_LIST_ID, -1); account_id = args.getLong(INTENT_KEY_ACCOUNT_ID, -1); max_id = args.getLong(INTENT_KEY_MAX_ID, -1); since_id = args.getLong(INTENT_KEY_SINCE_ID, -1); user_id = args.getLong(INTENT_KEY_USER_ID, -1); screen_name = args.getString(INTENT_KEY_SCREEN_NAME); list_name = args.getString(INTENT_KEY_LIST_NAME); is_home_tab = args.getBoolean(INTENT_KEY_IS_HOME_TAB); } return new UserListTimelineLoader(getActivity(), account_id, list_id, user_id, screen_name, list_name, max_id, since_id, getData(), getClass().getSimpleName(), is_home_tab); } /*@Override public void onCreateOptionsMenu(final Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.menu_home, menu); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(final MenuItem item) { switch (item.getItemId()) { } return super.onOptionsItemSelected(item); }*/ @Override public void onDestroy() { saveStatuses(); super.onDestroy(); } @Override public void onDestroyView() { saveStatuses(); super.onDestroyView(); } private void saveStatuses() { if (mIsStatusesSaved) return; final int first_visible_position = getListView().getFirstVisiblePosition(); final long status_id = getListAdapter().findItemIdByPosition(first_visible_position); UserListTimelineLoader.writeSerializableStatuses(this, getActivity(), getData(), status_id, getArguments()); mIsStatusesSaved = true; } }