我正在创建一个聊天应用程序。为此，我正在测试一个XMPP服务器。登录时，我连接并登录到测试XMPP服务器。它正在发送和接收消息。
我想要的是，当应用程序关闭时（在调用destroy方法时），此服务应保持连接处于活动状态并侦听消息并将其存储在应用程序正在使用的同一数据库中。
我已经创建了一个服务并添加了连接侦听器和数据包侦听器但是只要我关闭应用程序，就会看到服务正在运行但连接丢失了。
登录活动：
private class ProcessLogin extends AsyncTask<String, Void, String> {
private ProgressDialog pDialog;
String uname,password;
@Override
protected void onPreExecute() {
super.onPreExecute();
uname = txtUsername.getText().toString();
password = txtPassword.getText().toString();
pDialog = new ProgressDialog(LoginActivity.this);
pDialog.setTitle("Contacting Servers");
pDialog.setMessage("Logging in ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
// Create a connection
ConnectionConfiguration connConfig = new ConnectionConfiguration(HOST,PORT);
XMPPConnection connection = new XMPPTCPConnection(connConfig);
String user = null;
HostAddress address = new HostAddress(HOST);
try {
try {
connection.connect();
} catch (SmackException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("XMPPChatDemoActivity", "[SettingsDialog] Connected to " + connection.getHost());
Log.i("XMPPChatDemoActivity", "[SettingsDialog] Connected to "+ address.getErrorMessage());
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "[SettingsDialog] Failed to connect to "+ connection.getHost());
Log.i("XMPPChatDemoActivity", "[SettingsDialog] Connected to "+ address.getErrorMessage());
Log.e("XMPPChatDemoActivity", ex.toString());
//setConnect(null);
}
try {
try {
connection.login(uname, password);
XMPPSuper.getInstance().setConnection(connection);
} catch (SaslException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SmackException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("XMPPChatDemoActivity", "Logged in as" + connection.getUser());
// Set the status to available
Presence presence = new Presence(Presence.Type.available);
connection.sendPacket(presence);
//setConnect(connection);
Roster roster = connection.getRoster();
Collection<RosterEntry> entries = roster.getEntries();
for (RosterEntry entry : entries) {
Log.d("XMPPChatDemoActivity", "--------------------------------------");
Log.d("XMPPChatDemoActivity", "RosterEntry " + entry);
Log.d("XMPPChatDemoActivity", "User: " + entry.getUser());
Log.d("XMPPChatDemoActivity", "Name: " + entry.getName());
Log.d("XMPPChatDemoActivity", "Status: " + entry.getStatus());
Log.d("XMPPChatDemoActivity", "Type: " + entry.getType());
Presence entryPresence = roster.getPresence(entry.getUser());
Log.d("XMPPChatDemoActivity", "Presence Status: "+ entryPresence.getStatus());
Log.d("XMPPChatDemoActivity", "Presence Type: " + entryPresence.getType());
Presence.Type type = entryPresence.getType();
if (type == Presence.Type.available)
Log.d("XMPPChatDemoActivity", "Presence AVIALABLE");
Log.d("XMPPChatDemoActivity", "Presence : " + entryPresence);
user = XMPPSuper.getInstance().getConnection().getUser();
}
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "Failed to log in as "+ USERNAME);
Log.e("XMPPChatDemoActivity", ex.toString());
user=null;
//setConnect(null);
}
// dialog.dismiss();
catch (SmackException.NotConnectedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return user;
}
@Override
protected void onPostExecute(String user) {
try {
if(user != null){
// Creating user login session
// For testing i am storing name, email as follow
// Use user real data
session.createLoginSession(user,"email id", "2000");
Intent i = new Intent("com.example.tabmainactivity");
pDialog.dismiss();
startService(new Intent(getApplicationContext(), iFlyChatMessage.class));
startActivity(i);
finish();
}else{
// username / password doesn't match
pDialog.dismiss();
Toast.makeText(getApplicationContext(),
"Incorrect username/password", Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
我的服务：
@Override
public void onCreate() {
connection = XMPPSuper.getInstance().getConnection();
//PingManager keep_alive = PingManager.getInstanceFor(connection);
configureConnection(connection);
//keep_alive.setPingInterval(100);
if (connection != null) {
final DatabaseHandler db = new DatabaseHandler(this);
// Add a packet listener to get messages sent to us
PacketFilter filter = new MessageTypeFilter(org.jivesoftware.smack.packet.Message.Type.chat);
connection.addPacketListener(new PacketListener() {
@Override
public void processPacket(Packet packet) {
org.jivesoftware.smack.packet.Message message = (org.jivesoftware.smack.packet.Message) packet;
if (message.getBody() != null) {
String fromName = StringUtils.parseBareAddress(message.getFrom());
Log.i("XMPPChatDemoActivity ", " Text Recieved " + message.getBody() + " from " + fromName);
java.util.Date date = new java.util.Date();
Timestamp time = new Timestamp(date.getTime());
db.addMessage(message.getBody().toString(), fromName, "testkerry@suchat.org", "1", "2000", time.toString());
/*org.jivesoftware.smack.packet.Message msg = new org.jivesoftware.smack.packet.Message(fromName);
msg.setBody("Test Successful");
try {
connection.sendPacket(msg);
} catch (SmackException.NotConnectedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
// Add the incoming message to the list view
/*mHandler.post(new Runnable() {
public void run() {
// setListAdapter();
}
});*/
//messagelist.add(new MessageClass("kerry@suchat.org","testkerry@suchat.org",recipient_uid, sender_uid,message.getBody().toString(), time.toString()));
}
}
}, filter);
}
}
/** The service is starting, due to a call to startService() */
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// We want this service to continue running until it is explicitly stopped, so return sticky.
return START_STICKY;
}
private void configureConnection(final XMPPConnection connection){
connection.addConnectionListener(new AbstractConnectionListener()
{
public void connectionClosed(){
connect();
}
public void connectionClosedOnError(Exception e)
{
connect();
}
public void reconnectionFailed(Exception e)
{
}
public void reconnectionSuccessful(){
}
public void reconnectingIn(int seconds)
{
}
}
);
}
private void connect()
{
ConnectionConfiguration connConfig = new ConnectionConfiguration(HOST,PORT);
XMPPConnection connection = new XMPPTCPConnection(connConfig);
HostAddress address = new HostAddress(HOST);
try {
try {
connection.connect();
} catch (SmackException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("XMPPChatDemoActivity", "[SettingsDialog] Connected to " + connection.getHost());
Log.i("XMPPChatDemoActivity", "[SettingsDialog] Connected to "+ address.getErrorMessage());
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "[SettingsDialog] Failed to connect to "+ connection.getHost());
Log.i("XMPPChatDemoActivity", "[SettingsDialog] Connected to "+ address.getErrorMessage());
Log.e("XMPPChatDemoActivity", ex.toString());
//setConnect(null);
}
try {
try {
connection.login(USERNAME,PASSWORD);
XMPPSuper.getInstance().setConnection(connection);
} catch (SaslException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SmackException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("XMPPChatDemoActivity", "Logged in as" + connection.getUser());
// Set the status to available
Presence presence = new Presence(Presence.Type.available);
connection.sendPacket(presence);
//setConnect(connection);
Roster roster = connection.getRoster();
Collection<RosterEntry> entries = roster.getEntries();
for (RosterEntry entry : entries) {
Log.d("XMPPChatDemoActivity", "--------------------------------------");
Log.d("XMPPChatDemoActivity", "RosterEntry " + entry);
Log.d("XMPPChatDemoActivity", "User: " + entry.getUser());
Log.d("XMPPChatDemoActivity", "Name: " + entry.getName());
Log.d("XMPPChatDemoActivity", "Status: " + entry.getStatus());
Log.d("XMPPChatDemoActivity", "Type: " + entry.getType());
Presence entryPresence = roster.getPresence(entry.getUser());
Log.d("XMPPChatDemoActivity", "Presence Status: "+ entryPresence.getStatus());
Log.d("XMPPChatDemoActivity", "Presence Type: " + entryPresence.getType());
Presence.Type type = entryPresence.getType();
if (type == Presence.Type.available)
Log.d("XMPPChatDemoActivity", "Presence AVIALABLE");
Log.d("XMPPChatDemoActivity", "Presence : " + entryPresence);
}
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "Failed to log in as "+ USERNAME);
Log.e("XMPPChatDemoActivity", ex.toString());
//setConnect(null);
}
// dialog.dismiss();
catch (SmackException.NotConnectedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
知道如何去做吗？
答案 0 :(得分：1)
启动时，您的应用程序启动服务
在AsyncTask的onPostExecute()方法中添加连接侦听器和数据包侦听器。
并在服务AsyncTask方法
onCreate()
在服务中执行AsyncTask，它可以使任务持续工作，直至服务活动以及xmpp连接。
我希望它能帮到你
它对我有用......