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 twitter4j.internal.org.json.JSONObject; import com.dwdesign.tweetings.R; import com.dwdesign.tweetings.app.TweetingsApplication; import com.dwdesign.tweetings.fragment.CustomTabsFragment.CustomTabsAdapter; import com.dwdesign.tweetings.loader.TweetSearchLoader; import com.dwdesign.tweetings.model.ParcelableStatus; import com.dwdesign.tweetings.provider.TweetStore.Tabs; import com.dwdesign.tweetings.util.SynchronizedStateSavedList; import android.content.BroadcastReceiver; import android.content.ContentResolver; import android.content.ContentValues; 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.Gravity; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.FrameLayout; import android.widget.Toast; public class SearchTweetsFragment extends ParcelableStatusesListFragment { private boolean mIsStatusesSaved = false; private boolean isVisibleToUser = false; private int mSearchId = -1; private long mAccountId; private String mQuery; Menu optionsMenu; // 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 Loader<SynchronizedStateSavedList<ParcelableStatus, Long>> newLoaderInstance(final Bundle args) { long account_id = -1, max_id = -1, since_id = -1; String query = null; boolean is_home_tab = false; if (args != null) { account_id = args.getLong(INTENT_KEY_ACCOUNT_ID); max_id = args.getLong(INTENT_KEY_MAX_ID, -1); since_id = args.getLong(INTENT_KEY_SINCE_ID, -1); query = args.getString(INTENT_KEY_QUERY); is_home_tab = args.getBoolean(INTENT_KEY_IS_HOME_TAB); } return new TweetSearchLoader(getActivity(), account_id, query, max_id, since_id, getData(), getClass().getSimpleName(), is_home_tab); } @Override public void scrollToStatusId(long statusId) { } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public boolean onOptionsItemSelected(final MenuItem item) { switch (item.getItemId()) { case MENU_SAVE: { final TweetingsApplication application = getApplication(); application.getServiceInterface().createSavedSearch(mAccountId, mQuery); break; } case MENU_DELETE: { final TweetingsApplication application = getApplication(); application.getServiceInterface().destroySavedSearch(mAccountId, mSearchId); break; } case MENU_ADD_TAB: { CustomTabsAdapter mAdapter; mAdapter = new CustomTabsAdapter(getActivity()); ContentResolver mResolver; mResolver = getContentResolver(); final String tabName = mQuery; final String tabType = AUTHORITY_SEARCH_TWEETS; final String tabIcon = "search"; final long account_id = mAccountId; final String tabArguments = "{\"account_id\":" + account_id + ",\"query\":" + JSONObject.quote(mQuery) + "}"; final ContentValues values = new ContentValues(); values.put(Tabs.ARGUMENTS, tabArguments); values.put(Tabs.NAME, tabName); values.put(Tabs.POSITION, mAdapter.getCount()); values.put(Tabs.TYPE, tabType); values.put(Tabs.ICON, tabIcon); mResolver.insert(Tabs.CONTENT_URI, values); Toast.makeText(this.getActivity(), R.string.search_tab_added, Toast.LENGTH_SHORT).show(); break; } } return super.onOptionsItemSelected(item); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { menu.clear(); inflater.inflate(R.menu.menu_searchtweets, menu); super.onCreateOptionsMenu(menu, inflater); } @Override public void onPrepareOptionsMenu(final Menu menu) { super.onPrepareOptionsMenu(menu); optionsMenu = menu; final MenuItem itemSave = menu.findItem(MENU_SAVE); final MenuItem itemDelete = menu.findItem(MENU_DELETE_SUBMENU); if (mSearchId > 0) { itemSave.setVisible(false); itemDelete.setVisible(true); } else { itemSave.setVisible(true); itemDelete.setVisible(false); } } @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); TweetSearchLoader.writeSerializableStatuses(this, getActivity(), getData(), status_id, getArguments()); mIsStatusesSaved = true; } }