这个问题是我之前的问题的延续，虽然我已经设法删除了NetworkOnMainThreadError，现在我有新的错误要与之对抗，
可以在此处找到上一个问题：XMPP and ANDROID
这次我想probelm是我的主机名，或者可能是服务名称，我正在尝试连接openFire服务器。
顺便说一下，我需要将public class SettingsDialog extends Dialog添加到Menifest文件
我的连接代码：
/**
* Gather the xmpp settings and create an XMPPConnection
*/
public class SettingsDialog extends Dialog implements android.view.View.OnClickListener {
private XMPPClient xmppClient;
public SettingsDialog(XMPPClient xmppClient) {
super(xmppClient);
this.xmppClient = xmppClient;
}
protected void onStart() {
super.onStart();
setContentView(R.layout.settings);
getWindow().setFlags(4, 4);
setTitle("XMPP Settings");
Button ok = (Button) findViewById(R.id.ok);
ok.setOnClickListener(this);
}
public void onClick(View v) {
new NetworkOperation().execute();
dismiss();
}
异步任务
public class NetworkOperation extends AsyncTask<String, Void, String> {
private XMPPClient xmppClient;
@Override
protected String doInBackground(String... urls) {
String host = "web.vlivetech.com"; //getText(R.id.host);
String port = "5222"; //getText(R.id.port);
String service = "web.vlivetech.com"; //getText(R.id.service);
String username = "khubaib@web.vlivetech.com"; //getText(R.id.userid);
String password = "khubaib"; //getText(R.id.password);
// Create a connection
ConnectionConfiguration connConfig =
new ConnectionConfiguration(host, Integer.parseInt(port),service);
XMPPConnection connection = new XMPPConnection(connConfig);
try {
connection.connect();
Log.i("XMPPClient", "[SettingsDialog] Connected to " + connection.getHost());
} catch (XMPPException ex) {
Log.e("XMPPClient", "[SettingsDialog] Failed to connect to " + connection.getHost());
xmppClient.setConnection(null);
}
try {
connection.login(username, password);
Log.i("XMPPClient", "Logged in as " + connection.getUser());
// Set the status to available
Presence presence = new Presence(Presence.Type.available);
connection.sendPacket(presence);
xmppClient.setConnection(connection);
} catch (XMPPException ex) {
Log.e("XMPPClient", "[SettingsDialog] Failed to log in as " + username);
xmppClient.setConnection(null);
}
return null;
}
@Override
protected void onPostExecute(String result) {
}
}
我在异步任务中遇到错误的行：
try {
connection.connect();
Log.i("XMPPClient", "[SettingsDialog] Connected to " + connection.getHost());
} catch (XMPPException ex) {
Log.e("XMPPClient", "[SettingsDialog] Failed to connect to " + connection.getHost());
xmppClient.setConnection(null);
}
日志文件
03-06 17:50:39.754: I/SmackConfiguration(16410): No configuration file found
03-06 17:50:39.764: E/XMPPClient(16410): [SettingsDialog] Failed to connect to null
03-06 17:50:39.764: W/dalvikvm(16410): threadid=11: thread exiting with uncaught exception (group=0x40aaa210)
03-06 17:50:39.774: E/AndroidRuntime(16410): FATAL EXCEPTION: AsyncTask #1
03-06 17:50:39.774: E/AndroidRuntime(16410): java.lang.RuntimeException: An error occured while executing doInBackground()
03-06 17:50:39.774: E/AndroidRuntime(16410): at android.os.AsyncTask$3.done(AsyncTask.java:278)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
03-06 17:50:39.774: E/AndroidRuntime(16410): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.lang.Thread.run(Thread.java:856)
03-06 17:50:39.774: E/AndroidRuntime(16410): Caused by: java.lang.NullPointerException
03-06 17:50:39.774: E/AndroidRuntime(16410): at com.example.test.NetworkOperation.doInBackground(NetworkOperation.java:33)
03-06 17:50:39.774: E/AndroidRuntime(16410): at com.example.test.NetworkOperation.doInBackground(NetworkOperation.java:1)
03-06 17:50:39.774: E/AndroidRuntime(16410): at android.os.AsyncTask$2.call(AsyncTask.java:264)
03-06 17:50:39.774: E/AndroidRuntime(16410): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
答案 0 :(得分：0)
如果您的NetworkOperation在您的活动中，请从NetworkOperation删除此行，或者您可能想要添加constructor（？），并将xmppClient与{一起通过{1}}
.execute()答案 1 :(得分：0)
也许您可以使用此代码..而且您不需要AsyncTask ..
String HOST = "Yourhost";
int PORT = your port;
String USERNAME = "USERNAME";
String PASSWORD = "YOURPASSWORD";
Thread t = new Thread(new Runnable() {
@Override
public void run() {
ConnectionConfiguration connConfig = new ConnectionConfiguration(
HOST, PORT);
connConfig.setReconnectionAllowed(true);
XMPPConnection connection = new XMPPConnection(connConfig);
try {
connection.connect();
Log.i("XMPPChatDemoActivity",
"Connected to " + connection.getHost());
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "Failed to connect to "
+ connection.getHost());
Log.e("XMPPChatDemoActivity", ex.toString());
}
try {
connection.login(USERNAME, PASSWORD);
Log.i("XMPPChatDemoActivity",
"Logged in as " + connection.getUser());
// Set the status to available
Presence presence = new Presence(Presence.Type.available);
connection.sendPacket(presence);
Roster roster = connection.getRoster();
Collection<RosterEntry> entries = roster.getEntries();
} catch (XMPPException ex) {
Log.e("XMPPChatDemoActivity", "Failed to log in as "
+ USERNAME);
Log.e("XMPPChatDemoActivity", ex.toString());
}
}
});
t.start();