Java tutorial
/* * TeleStax, Open Source Cloud Communications * Copyright 2011-2015, Telestax Inc and individual contributors * by the @authors tag. * * This program is free software: you can redistribute it and/or modify * under the terms of the GNU Affero 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/> * * For questions related to commercial use licensing, please contact sales@telestax.com. * */ package org.restcomm.android.olympus; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.provider.ContactsContract; import android.support.v4.app.ListFragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.ContextCompat; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v4.widget.SimpleCursorAdapter; import android.view.View; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.TextView; import org.restcomm.android.sdk.RCClient; import org.restcomm.android.sdk.RCDevice; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; public class MessageFragment extends ListFragment { private SimpleCursorAdapter listViewAdapter; private ArrayList<Map<String, String>> messageList; public static final String MESSAGE_CONTACT_KEY = "username"; public static final String MESSAGE_TEXT_KEY = "message-text"; /** * The serialization (saved instance state) Bundle key representing the * activated item position. Only used on tablets. */ private static final String STATE_ACTIVATED_POSITION = "activated_position"; /** * The fragment's current callback object, which is notified of list item * clicks. */ private Callbacks mCallbacks = null; /** * The current activated item position. Only used on tablets. */ private int mActivatedPosition = ListView.INVALID_POSITION; /** * A callback interface that all activities containing this fragment must * implement. This mechanism allows activities to be notified of item * selections. */ public interface Callbacks { /** * Callback for when an item has been selected. */ //public void onItemSelected(HashMap<String, String> contact, ContactSelectionType type); //public void onContactUpdate(HashMap<String, String> contact, int type); } /** * Mandatory empty constructor for the fragment manager to instantiate the * fragment (e.g. upon screen orientation changes). */ public MessageFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Use MessageActivity intent to retrieve the contact name final Intent intent = getActivity().getIntent(); String contactName = intent.getStringExtra(RCDevice.EXTRA_DID).replaceAll("^sip:", "").replaceAll("@.*$", ""); //listFragment = (MessageFragment) getSupportFragmentManager().findFragmentById(R.id.message_list); //Bundle args = new Bundle(); //args.putString("contact-name", shortname); //listFragment.setArguments(args); /* Bundle args = getArguments(); String contactName = args.getString("contact-name"); */ DatabaseManager.getInstance().open(getActivity().getApplicationContext()); // TODO: this must be done in the background Cursor cursor = DatabaseManager.getInstance().retrieveMessages(contactName); String[] fromColumns = { DatabaseContract.ContactEntry.COLUMN_NAME_NAME, DatabaseContract.MessageEntry.COLUMN_NAME_TEXT, DatabaseContract.MessageEntry.COLUMN_NAME_DELIVERY_STATUS }; int[] toViews = { R.id.message_username, R.id.message_text, R.id.message_status }; listViewAdapter = new SimpleCursorAdapter(getActivity().getApplicationContext(), R.layout.message_row_layout, cursor, fromColumns, toViews, 0); // Use a binder for the delivery status column which doesn't map 1-on-1 with the view: status in the db is an integer, while in the view it's a string listViewAdapter.setViewBinder(new SimpleCursorAdapter.ViewBinder() { @Override public boolean setViewValue(View view, Cursor cursor, int columnIndex) { if (cursor.getColumnName(columnIndex) .equals(DatabaseContract.MessageEntry.COLUMN_NAME_DELIVERY_STATUS)) { TextView deliveryStatusView = (TextView) view; if (cursor.getString(cursor.getColumnIndex(DatabaseContract.MessageEntry.COLUMN_NAME_TYPE)) .equals("local")) { int deliveryStatus = cursor.getInt(columnIndex); if (deliveryStatus == DatabaseContract.MessageDeliveryStatus.TEXT_MESSAGE_PENDING .ordinal()) { deliveryStatusView.setText("..."); deliveryStatusView.setTextColor( ContextCompat.getColor(getActivity(), R.color.colorTextSecondary)); } else if (deliveryStatus == DatabaseContract.MessageDeliveryStatus.TEXT_MESSAGE_FAILED .ordinal()) { deliveryStatusView.setText("Failed"); deliveryStatusView .setTextColor(ContextCompat.getColor(getActivity(), R.color.colorError)); } else { deliveryStatusView.setText("Success"); deliveryStatusView.setTextColor( ContextCompat.getColor(getActivity(), R.color.colorTextSecondary)); } } else { // remote message deliveryStatusView.setText(""); } return true; } if (cursor.getColumnName(columnIndex).equals(DatabaseContract.ContactEntry.COLUMN_NAME_NAME)) { TextView usernameView = (TextView) view; if (cursor.getString(cursor.getColumnIndex(DatabaseContract.MessageEntry.COLUMN_NAME_TYPE)) .equals("local")) { usernameView.setText("Me"); return true; } } return false; } }); setListAdapter(listViewAdapter); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); getListView().setDivider(null); getListView().setDividerHeight(0); // Restore the previously serialized activated item position. if (savedInstanceState != null && savedInstanceState.containsKey(STATE_ACTIVATED_POSITION)) { setActivatedPosition(savedInstanceState.getInt(STATE_ACTIVATED_POSITION)); } registerForContextMenu(getListView()); } @Override public void onAttach(Activity activity) { super.onAttach(activity); // Activities containing this fragment must implement its callbacks. if (!(activity instanceof Callbacks)) { throw new IllegalStateException("Activity must implement fragment's callbacks."); } mCallbacks = (Callbacks) activity; } @Override public void onDetach() { super.onDetach(); // Reset the active callbacks interface to the dummy implementation. mCallbacks = null; } @Override public void onListItemClick(ListView listView, View view, int position, long id) { super.onListItemClick(listView, view, position, id); // no actions for now when tapping on an item /* HashMap item = (HashMap)getListView().getItemAtPosition(position); // Notify the active callbacks interface (the activity, if the // fragment is attached to one) that an item has been selected. mCallbacks.onItemSelected(item, ContactSelectionType.VIDEO_CALL); */ } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (mActivatedPosition != ListView.INVALID_POSITION) { // Serialize and persist the activated item position. outState.putInt(STATE_ACTIVATED_POSITION, mActivatedPosition); } } /** * Turns on activate-on-click mode. When this mode is on, list items will be * given the 'activated' state when touched. */ public void setActivateOnItemClick(boolean activateOnItemClick) { // When setting CHOICE_MODE_SINGLE, ListView will automatically // give items the 'activated' state when touched. getListView().setChoiceMode(activateOnItemClick ? ListView.CHOICE_MODE_SINGLE : ListView.CHOICE_MODE_NONE); } private void setActivatedPosition(int position) { if (position == ListView.INVALID_POSITION) { getListView().setItemChecked(mActivatedPosition, false); } else { getListView().setItemChecked(position, true); } mActivatedPosition = position; } // Called by Activity when when new message is sent public int addLocalMessage(String message, String username, String jobId) { int countBeforeAddition = listViewAdapter.getCount(); DatabaseManager.getInstance().addMessage(username, message, true, jobId, DatabaseContract.MessageDeliveryStatus.TEXT_MESSAGE_PENDING); // TODO: this must be done in the background Cursor cursor = DatabaseManager.getInstance().retrieveMessages(username); // update adapter cursor to use the new one with updated rows this.listViewAdapter.changeCursor(cursor); this.listViewAdapter.notifyDataSetChanged(); getListView().setSelection(listViewAdapter.getCount() - 1); return countBeforeAddition; } // Called by Activity when when new message is sent public void addRemoteMessage(String message, String username) { DatabaseManager.getInstance().addMessage(username, message, false, null, DatabaseContract.MessageDeliveryStatus.TEXT_MESSAGE_DELIVERED); // TODO: this must be done in the background Cursor cursor = DatabaseManager.getInstance().retrieveMessages(username); // update adapter cursor to use the new one with updated rows this.listViewAdapter.changeCursor(cursor); this.listViewAdapter.notifyDataSetChanged(); getListView().setSelection(listViewAdapter.getCount() - 1); } public void updateMessageDeliveryStatus(String jobId, int statusCode, String username) { DatabaseContract.MessageDeliveryStatus deliveryStatus = DatabaseContract.MessageDeliveryStatus.TEXT_MESSAGE_DELIVERED; if (statusCode != RCClient.ErrorCodes.SUCCESS.ordinal()) { deliveryStatus = DatabaseContract.MessageDeliveryStatus.TEXT_MESSAGE_FAILED; } DatabaseManager.getInstance().updateMessageStatus(jobId, deliveryStatus); // TODO: this must be done in the background Cursor cursor = DatabaseManager.getInstance().retrieveMessages(username); // update adapter cursor to use the new one with updated rows this.listViewAdapter.changeCursor(cursor); this.listViewAdapter.notifyDataSetChanged(); } /* public ListView getFragmentListView() { return getListView(); } */ // Helper methods private void showOkAlert(final String title, final String detail) { AlertDialog alertDialog = new AlertDialog.Builder(getActivity()).create(); alertDialog.setTitle(title); alertDialog.setMessage(detail); alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); alertDialog.show(); } }