Java tutorial
package org.linphone; /* ChatListFragment.java Copyright (C) 2012 Belledonne Communications, Grenoble, France 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import java.util.List; import org.linphone.core.LinphoneAddress; import org.linphone.core.LinphoneChatMessage; import org.linphone.core.LinphoneChatRoom; import org.linphone.core.LinphoneCoreException; import org.linphone.core.LinphoneCoreFactory; import org.linphone.mediastream.Log; import android.app.ProgressDialog; import android.content.Context; import android.content.SharedPreferences; import android.content.pm.PackageManager.NameNotFoundException; import android.graphics.Bitmap; import android.os.AsyncTask; import android.os.Bundle; import android.os.Environment; import android.preference.PreferenceManager; import android.support.v4.app.Fragment; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.EditText; import android.widget.ImageView; import android.widget.ListView; import android.widget.TextView; /** * @author Sylvain Berfini */ public class ChatListFragment extends Fragment implements OnClickListener, OnItemClickListener { private LayoutInflater mInflater; private List<String> mConversations, mDrafts; private ListView chatList; private TextView edit, ok, newDiscussion, noChatHistory; private ImageView clearFastChat; private EditText fastNewChat; private boolean isEditMode = false; private boolean useLinphoneStorage; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mInflater = inflater; View view = inflater.inflate(R.layout.chatlist, container, false); chatList = (ListView) view.findViewById(R.id.chatList); chatList.setOnItemClickListener(this); registerForContextMenu(chatList); noChatHistory = (TextView) view.findViewById(R.id.noChatHistory); edit = (TextView) view.findViewById(R.id.edit); edit.setOnClickListener(this); newDiscussion = (TextView) view.findViewById(R.id.newDiscussion); newDiscussion.setOnClickListener(this); ok = (TextView) view.findViewById(R.id.ok); ok.setOnClickListener(this); clearFastChat = (ImageView) view.findViewById(R.id.clearFastChatField); clearFastChat.setOnClickListener(this); fastNewChat = (EditText) view.findViewById(R.id.newFastChat); return view; } private void hideAndDisplayMessageIfNoChat() { if (mConversations.size() == 0 && mDrafts.size() == 0) { noChatHistory.setVisibility(View.VISIBLE); chatList.setVisibility(View.GONE); } else { noChatHistory.setVisibility(View.GONE); chatList.setVisibility(View.VISIBLE); chatList.setAdapter(new ChatListAdapter(useLinphoneStorage)); } } public void refresh() { mConversations = LinphoneActivity.instance().getChatList(); mDrafts = LinphoneActivity.instance().getDraftChatList(); mConversations.removeAll(mDrafts); hideAndDisplayMessageIfNoChat(); } private boolean isVersionUsingNewChatStorage() { try { Context context = LinphoneActivity.instance(); return context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionCode >= 2200; } catch (NameNotFoundException e) { e.printStackTrace(); } return true; } @Override public void onResume() { super.onResume(); //Check if the is the first time we show the chat view since we use liblinphone chat storage useLinphoneStorage = getResources().getBoolean(R.bool.use_linphone_chat_storage); final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(LinphoneActivity.instance()); boolean updateNeeded = prefs.getBoolean(getString(R.string.pref_first_time_linphone_chat_storage), true); updateNeeded = updateNeeded && !isVersionUsingNewChatStorage(); if (useLinphoneStorage && updateNeeded) { AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() { private ProgressDialog pd; @Override protected void onPreExecute() { pd = new ProgressDialog(LinphoneActivity.instance()); pd.setTitle(getString(R.string.wait)); pd.setMessage(getString(R.string.importing_messages)); pd.setCancelable(false); pd.setIndeterminate(true); pd.show(); } @Override protected Void doInBackground(Void... arg0) { try { if (importAndroidStoredMessagedIntoLibLinphoneStorage()) { prefs.edit() .putBoolean(getString(R.string.pref_first_time_linphone_chat_storage), false) .commit(); LinphoneActivity.instance().getChatStorage().restartChatStorage(); } } catch (Exception e) { e.printStackTrace(); } return null; } @Override protected void onPostExecute(Void result) { pd.dismiss(); } }; task.execute((Void[]) null); } if (LinphoneActivity.isInstanciated()) { LinphoneActivity.instance().selectMenu(FragmentsAvailable.CHATLIST); LinphoneActivity.instance().updateChatListFragment(this); if (getResources().getBoolean(R.bool.show_statusbar_only_on_dialer)) { LinphoneActivity.instance().hideStatusBar(); } } refresh(); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.add(0, v.getId(), 0, getString(R.string.delete)); } @Override public boolean onContextItemSelected(MenuItem item) { AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); if (info == null || info.targetView == null) { return false; } String sipUri = (String) info.targetView.getTag(); LinphoneActivity.instance().removeFromChatList(sipUri); mConversations = LinphoneActivity.instance().getChatList(); mDrafts = LinphoneActivity.instance().getDraftChatList(); mConversations.removeAll(mDrafts); hideAndDisplayMessageIfNoChat(); return true; } @Override public void onClick(View v) { int id = v.getId(); if (id == R.id.clearFastChatField) { fastNewChat.setText(""); } else if (id == R.id.ok) { edit.setVisibility(View.VISIBLE); ok.setVisibility(View.GONE); isEditMode = false; hideAndDisplayMessageIfNoChat(); } else if (id == R.id.edit) { edit.setVisibility(View.GONE); ok.setVisibility(View.VISIBLE); isEditMode = true; hideAndDisplayMessageIfNoChat(); } else if (id == R.id.newDiscussion) { String sipUri = fastNewChat.getText().toString(); if (sipUri.equals("")) { LinphoneActivity.instance().displayContacts(true); } else { if (!LinphoneUtils.isSipAddress(sipUri)) { if (LinphoneManager.getLc().getDefaultProxyConfig() == null) { return; } sipUri = sipUri + "@" + LinphoneManager.getLc().getDefaultProxyConfig().getDomain(); } if (!LinphoneUtils.isStrictSipAddress(sipUri)) { sipUri = "sip:" + sipUri; } LinphoneActivity.instance().displayChat(sipUri); } } } @Override public void onItemClick(AdapterView<?> adapter, View view, int position, long id) { String sipUri = (String) view.getTag(); if (LinphoneActivity.isInstanciated() && !isEditMode) { LinphoneActivity.instance().displayChat(sipUri); } else if (LinphoneActivity.isInstanciated()) { LinphoneActivity.instance().removeFromChatList(sipUri); LinphoneActivity.instance().removeFromDrafts(sipUri); mConversations = LinphoneActivity.instance().getChatList(); mDrafts = LinphoneActivity.instance().getDraftChatList(); mConversations.removeAll(mDrafts); hideAndDisplayMessageIfNoChat(); LinphoneActivity.instance().updateMissedChatCount(); } } private boolean importAndroidStoredMessagedIntoLibLinphoneStorage() { Log.w("Importing previous messages into new database..."); try { ChatStorage db = LinphoneActivity.instance().getChatStorage(); List<String> conversations = db.getChatList(); for (int j = conversations.size() - 1; j >= 0; j--) { String correspondent = conversations.get(j); LinphoneChatRoom room = LinphoneManager.getLc().getOrCreateChatRoom(correspondent); for (ChatMessage message : db.getMessages(correspondent)) { LinphoneChatMessage msg = room.createLinphoneChatMessage(message.getMessage(), message.getUrl(), message.getStatus(), Long.parseLong(message.getTimestamp()), true, message.isIncoming()); if (message.getImage() != null) { String path = saveImageAsFile(message.getId(), message.getImage()); if (path != null) msg.setExternalBodyUrl(path); } msg.store(); } db.removeDiscussion(correspondent); } return true; } catch (Exception e) { e.printStackTrace(); } return false; } private String saveImageAsFile(int id, Bitmap bm) { try { String path = Environment.getExternalStorageDirectory().toString(); if (!path.endsWith("/")) path += "/"; path += "Pictures/"; File directory = new File(path); directory.mkdirs(); String filename = getString(R.string.picture_name_format).replace("%s", String.valueOf(id)); File file = new File(path, filename); OutputStream fOut = null; fOut = new FileOutputStream(file); bm.compress(Bitmap.CompressFormat.JPEG, 100, fOut); fOut.flush(); fOut.close(); return path + filename; } catch (Exception e) { e.printStackTrace(); } return null; } class ChatListAdapter extends BaseAdapter { private boolean useNativeAPI; ChatListAdapter(boolean useNativeAPI) { this.useNativeAPI = useNativeAPI; } public int getCount() { return mConversations.size() + mDrafts.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { View view = null; if (convertView != null) { view = convertView; } else { view = mInflater.inflate(R.layout.chatlist_cell, parent, false); } String contact; boolean isDraft = false; if (position >= mDrafts.size()) { contact = mConversations.get(position - mDrafts.size()); } else { contact = mDrafts.get(position); isDraft = true; } view.setTag(contact); int unreadMessagesCount = LinphoneActivity.instance().getChatStorage().getUnreadMessageCount(contact); LinphoneAddress address; try { address = LinphoneCoreFactory.instance().createLinphoneAddress(contact); } catch (LinphoneCoreException e) { Log.e("Chat view cannot parse address", e); return view; } Contact lContact = ContactsManager.getInstance() .findContactWithAddress(getActivity().getContentResolver(), address); String message = ""; if (useNativeAPI) { LinphoneChatRoom chatRoom = LinphoneManager.getLc().getOrCreateChatRoom(contact); LinphoneChatMessage[] history = chatRoom.getHistory(20); if (history != null && history.length > 0) { for (int i = history.length - 1; i >= 0; i--) { LinphoneChatMessage msg = history[i]; if (msg.getText() != null && msg.getText().length() > 0 && msg.getFileTransferInformation() == null) { message = msg.getText(); break; } } } } else { List<ChatMessage> messages = LinphoneActivity.instance().getChatMessages(contact); if (messages != null && messages.size() > 0) { int iterator = messages.size() - 1; ChatMessage lastMessage = null; while (iterator >= 0) { lastMessage = messages.get(iterator); if (lastMessage.getMessage() == null) { iterator--; } else { iterator = -1; } } message = (lastMessage == null || lastMessage.getMessage() == null) ? "" : lastMessage.getMessage(); } } TextView lastMessageView = (TextView) view.findViewById(R.id.lastMessage); lastMessageView.setText(message); TextView sipUri = (TextView) view.findViewById(R.id.sipUri); sipUri.setSelected(true); // For animation if (getResources().getBoolean(R.bool.only_display_username_if_unknown)) { sipUri.setText(lContact == null ? address.getUserName() : lContact.getName()); } else { sipUri.setText(lContact == null ? address.asStringUriOnly() : lContact.getName()); } if (isDraft) { view.findViewById(R.id.draft).setVisibility(View.VISIBLE); } ImageView delete = (ImageView) view.findViewById(R.id.delete); TextView unreadMessages = (TextView) view.findViewById(R.id.unreadMessages); if (unreadMessagesCount > 0) { unreadMessages.setVisibility(View.VISIBLE); unreadMessages.setText(String.valueOf(unreadMessagesCount)); } else { unreadMessages.setVisibility(View.GONE); } if (isEditMode) { delete.setVisibility(View.VISIBLE); } else { delete.setVisibility(View.INVISIBLE); } return view; } } }