android 2.1应用中的mqtt-client

mqtt-client in android 2.1 app

使用fusesource mqtt-client-java1.4-uber-1.0(在android应用中)时出现一些问题。当我提供错误的IP或mqtt代理未在正确的IP上运行时，它会警告消息"无法连接(回调)"，而不是"无法连接(侦听器)"。当我提供正确的IP并且代理正在运行时，根本不会显示任何警报。我猜听者根本不工作，并且连接的成功回调不起作用。有想法吗？下面是android活动的完整代码。

我正在使用以下版本的mqtt-client：mqtt-client-java1.4-uber-1.0.jar
我还尝试了RSMB和Mosquitto的其他Messenger代理(服务器)

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package racenet.mqtt;

import java.net.URISyntaxException;

import org.fusesource.hawtbuf.Buffer;
import org.fusesource.hawtbuf.UTF8Buffer;
import org.fusesource.mqtt.client.Callback;
import org.fusesource.mqtt.client.CallbackConnection;
import org.fusesource.mqtt.client.Listener;
import org.fusesource.mqtt.client.MQTT;

import racenet.mqtt.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;

public class MQTTActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

MQTT mqtt = new MQTT();

try {

mqtt.setHost("tcp://proper-ip-here:1883");

} catch (URISyntaxException e) {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Could not set host")
.setNeutralButton("OK", null)
.show();
}

final CallbackConnection connection = mqtt.callbackConnection();
connection.listener(new Listener() {

public void onConnected() {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Connected (listener)")
.setNeutralButton("OK", null)
.show();
}

public void onDisconnected() {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Disconnected (listener)")
.setNeutralButton("OK", null)
.show();
}

public void onFailure(Throwable arg0) {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Failure (listener)")
.setNeutralButton("OK", null)
.show();
}

public void onPublish(UTF8Buffer arg0, Buffer arg1, Runnable arg2) {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Publish (listener)")
.setNeutralButton("OK", null)
.show();
}
});

connection.connect(new Callback<Void>() {

public void onFailure(Throwable value) {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Could not connect (callback)")
.setNeutralButton("OK", null)
.show();
}

public void onSuccess(Void v) {

new AlertDialog.Builder(MQTTActivity.this)
.setMessage("Connected (callback)")
.setNeutralButton("OK", null)
.show();
}
});
}
}