android 2.1应用程序中的mqtt客户端
我在使用fusesource mqtt-client-java1.4-uber-1.0(在android应用程序中)时遇到一些问题。当我提供错误的IP或mqtt代理未在正确的IP上运行时,它会发出消息“无法连接(回调)”而不是“无法连接(侦听器)”的警报。当我提供正确的ip并且代理正在运行时,不会出现任何警报。我猜侦听器根本不工作,而且连接的成功回调不起作用。有什么想法吗?下面是android活动的完整代码 我正在使用此版本的mqtt客户端: 我还尝试了不同的messe代理(服务器),它们是和android 2.1应用程序中的mqtt客户端,android,mqtt,Android,Mqtt,我在使用fusesource mqtt-client-java1.4-uber-1.0(在android应用程序中)时遇到一些问题。当我提供错误的IP或mqtt代理未在正确的IP上运行时,它会发出消息“无法连接(回调)”而不是“无法连接(侦听器)”的警报。当我提供正确的ip并且代理正在运行时,不会出现任何警报。我猜侦听器根本不工作,而且连接的成功回调不起作用。有什么想法吗?下面是android活动的完整代码 我正在使用此版本的mqtt客户端: 我还尝试了不同的messe代理(服务器),它们是和
package racenet.mqtt;
导入java.net.URISyntaxException;
导入org.fusesource.hawtbuf.Buffer;
导入org.fusesource.hawtbuf.UTF8Buffer;
导入org.fusesource.mqtt.client.Callback;
导入org.fusesource.mqtt.client.CallbackConnection;
导入org.fusesource.mqtt.client.Listener;
导入org.fusesource.mqtt.client.mqtt;
导入racenet.mqtt.R;
导入android.app.Activity;
导入android.app.AlertDialog;
导入android.os.Bundle;
公共类MQTTActivity扩展了活动{
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MQTT MQTT=新的MQTT();
试一试{
mqtt.setHost(“tcp://proper-ip-here:1883");
}捕获(URISyntaxException e){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“无法设置主机”)
.setNeutralButton(“确定”,空)
.show();
}
final CallbackConnection connection=mqtt.CallbackConnection();
connection.listener(新的listener(){
未连接的公共空间(){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“已连接(侦听器)”)
.setNeutralButton(“确定”,空)
.show();
}
公共空间已断开连接(){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“已断开连接(侦听器)”)
.setNeutralButton(“确定”,空)
.show();
}
失败时公共无效(可丢弃arg0){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“失败(侦听器)”)
.setNeutralButton(“确定”,空)
.show();
}
发布时公共无效(UTF8缓冲区arg0、缓冲区arg1、可运行arg2){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“发布(侦听器)”)
.setNeutralButton(“确定”,空)
.show();
}
});
connection.connect(新回调(){
失败时公共无效(可丢弃值){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“无法连接(回调)”)
.setNeutralButton(“确定”,空)
.show();
}
成功时公开作废(作废v){
新建AlertDialog.Builder(MQTTActivity.this)
.setMessage(“已连接(回调)”)
.setNeutralButton(“确定”,空)
.show();
}
});
}
}
现在有一个由IBM贡献的MQTT客户机Java实现,作为Eclipse上的开放源代码-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();
}
});
}
}