Java tutorial
/** * Copyright (c) 2013, Redsolution LTD. All rights reserved. * * This file is part of Xabber project; you can redistribute it and/or * modify it under the terms of the GNU General Public License, Version 3. * * Xabber 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.xabber.android.ui.activity; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.NavUtils; import android.support.v7.widget.Toolbar; import android.view.View; import android.widget.AdapterView; import android.widget.Toast; import com.xabber.android.R; import com.xabber.android.data.Application; import com.xabber.android.data.LogManager; import com.xabber.android.data.account.OnAccountChangedListener; import com.xabber.android.data.entity.BaseEntity; import com.xabber.android.data.extension.blocking.PrivateMucChatBlockingManager; import com.xabber.android.data.extension.muc.MUCManager; import com.xabber.android.data.intent.AccountIntentBuilder; import com.xabber.android.data.intent.EntityIntentBuilder; import com.xabber.android.data.message.AbstractChat; import com.xabber.android.data.message.MessageManager; import com.xabber.android.data.roster.OnContactChangedListener; import com.xabber.android.ui.adapter.OccupantListAdapter; import com.xabber.android.ui.color.BarPainter; import com.xabber.xmpp.address.Jid; import java.util.Collection; /** * Represent list of occupants in the room. * * @author alexander.ivanov */ public class OccupantList extends ManagedListActivity implements OnAccountChangedListener, OnContactChangedListener, AdapterView.OnItemClickListener { private String account; private String room; private OccupantListAdapter listAdapter; public static Intent createIntent(Context context, String account, String user) { return new EntityIntentBuilder(context, OccupantList.class).setAccount(account).setUser(user).build(); } private static String getAccount(Intent intent) { return AccountIntentBuilder.getAccount(intent); } private static String getUser(Intent intent) { return EntityIntentBuilder.getUser(intent); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (isFinishing()) { return; } account = getAccount(getIntent()); room = Jid.getBareAddress(getUser(getIntent())); if (account == null || room == null || !MUCManager.getInstance().hasRoom(account, room)) { Application.getInstance().onError(R.string.ENTRY_IS_NOT_FOUND); finish(); return; } setContentView(R.layout.list); final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_default); toolbar.setNavigationIcon(R.drawable.ic_arrow_left_white_24dp); toolbar.setNavigationOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { NavUtils.navigateUpFromSameTask(OccupantList.this); } }); toolbar.setTitle(room); BarPainter barPainter = new BarPainter(this, toolbar); barPainter.updateWithAccountName(account); listAdapter = new OccupantListAdapter(this, account, room); setListAdapter(listAdapter); getListView().setOnItemClickListener(this); } @Override protected void onResume() { super.onResume(); Application.getInstance().addUIListener(OnAccountChangedListener.class, this); Application.getInstance().addUIListener(OnContactChangedListener.class, this); listAdapter.onChange(); } @Override protected void onPause() { super.onPause(); Application.getInstance().removeUIListener(OnAccountChangedListener.class, this); Application.getInstance().removeUIListener(OnContactChangedListener.class, this); } @Override public void onContactsChanged(Collection<BaseEntity> entities) { if (entities.contains(new BaseEntity(account, room))) { listAdapter.onChange(); } } @Override public void onAccountsChanged(Collection<String> accounts) { if (accounts.contains(account)) { listAdapter.onChange(); } } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { com.xabber.android.data.extension.muc.Occupant occupant = (com.xabber.android.data.extension.muc.Occupant) listAdapter .getItem(position); LogManager.i(this, occupant.getNickname()); String occupantFullJid = room + "/" + occupant.getNickname(); if (PrivateMucChatBlockingManager.getInstance().getBlockedContacts(account).contains(occupantFullJid)) { Toast.makeText(this, R.string.contact_is_blocked, Toast.LENGTH_SHORT).show(); return; } final AbstractChat mucPrivateChat = MessageManager.getInstance().getOrCreatePrivateMucChat(account, occupantFullJid); mucPrivateChat.setIsPrivateMucChatAccepted(true); startActivity(ChatViewer.createSpecificChatIntent(this, account, occupantFullJid)); } }