使用Cyber​​Garage Cyber​​Link for Java的Android简单UPnP / DLNA控制点

时间:2013-08-03 11:53:20

标签: java android upnp dlna

我想使用Cyber​​Garage“Cyber​​Link for Java”API为Android编写UPnP控制点应用程序。为了测试API,我实现了一个非常简单的应用程序。在此应用程序中,UPnP控制点主动搜索任何UPnP根设备,侦听响应和设备通知,并打印网络上可用的设备列表。

该应用在Android手机上运行,​​但我的网络上找不到任何UPnP设备。我试过两款不同的Android手机。要检查这是否是Android特定问题,我实现了与Java控制台应用程序相同的功能。有趣的是,Java控制台应用程序运行得非常好,并且始终显示我网络上的所有UPnP设备!

那么为什么这在Android上不起作用?请注意,在Android应用程序中,我必须使用AsyncTask在单独的线程上实现网络特定功能。否则我会收到错误,因为我不应该在UI线程上运行它。但这不应该是问题,我是对的吗?

下面是两个应用程序的源代码。

Android应用程序:

MainActivity.java

package com.example.controller_v1;

import org.cybergarage.upnp.DeviceList;
import org.cybergarage.upnp.UPnP;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Process;
import android.util.Log;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        UPnP.setEnable(UPnP.USE_ONLY_IPV4_ADDR);
        new StartControlPointTask().execute();
    }

    private class StartControlPointTask extends AsyncTask {
        public static final String TAG = "StartControlPointTask";

        @Override
        protected Object doInBackground(Object... params) {
            Process.setThreadPriority(Process.THREAD_PRIORITY_FOREGROUND);
            MyControlPoint controlPoint = new MyControlPoint();
            controlPoint.start();
//          controlPoint.search();
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            DeviceList rootDevices = controlPoint.getDeviceList();
            int numDevices = rootDevices.size();
            if (numDevices > 0) {
                for (int i = 0; i < numDevices; i++) {
                    Log.i(TAG, "device " + i + ": " + rootDevices.getDevice(i).getFriendlyName());
                }
            } else {
                Log.i(TAG, "no root devices found");//
            }
            return null;
        }   
    }
}

MyControlPoint.java

package com.example.controller_v1;

import org.cybergarage.upnp.ControlPoint;
import org.cybergarage.upnp.device.NotifyListener;
import org.cybergarage.upnp.device.SearchResponseListener;
import org.cybergarage.upnp.ssdp.SSDPPacket;

import android.util.Log;

public class MyControlPoint extends ControlPoint implements NotifyListener, SearchResponseListener {
    public MyControlPoint() {
        addNotifyListener(this);
        addSearchResponseListener(this);
    }

    @Override
    public void deviceNotifyReceived(SSDPPacket ssdpPacket) { // NotifyListener
        final String TAG = "deviceNotifyReceived";
        Log.i(TAG, "executed");
    }

    @Override
    public void deviceSearchResponseReceived(SSDPPacket ssdpPacket) { // SearchResponseListener
        final String TAG = "deviceSearchResponseReceived";
        Log.i(TAG, "executed");
    }

}

的AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.controller_v1"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.controller_v1.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Java控制台应用程序:

Main.java

import org.cybergarage.upnp.DeviceList;
import org.cybergarage.upnp.UPnP;


public class Main {
    public Main() {
        UPnP.setEnable(UPnP.USE_ONLY_IPV4_ADDR);
        MyControlPoint controlPoint = new MyControlPoint();
        controlPoint.start();
//      controlPoint.search();

        try {
            Thread.sleep(5000); // wait for devices to be found
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        DeviceList rootDevices = controlPoint.getDeviceList();
        int numDevices = rootDevices.size();
        if (numDevices > 0) {
            for (int i = 0; i < numDevices; i++) {
                System.out.println("found device " + i + ": " + rootDevices.getDevice(i).getFriendlyName());
            }   
        } else {
            System.out.println("no root devices found");
        }
    }

    public static void main(String[] args) {
        new Main();
    }
}

MyControlPoint.java

import org.cybergarage.upnp.ControlPoint;
import org.cybergarage.upnp.device.NotifyListener;
import org.cybergarage.upnp.device.SearchResponseListener;
import org.cybergarage.upnp.ssdp.SSDPPacket;

public class MyControlPoint extends ControlPoint implements /*DeviceChangeListener,*/ NotifyListener, SearchResponseListener {
    public MyControlPoint() {
        addNotifyListener(this);
        addSearchResponseListener(this);
    }

    @Override
    public void deviceNotifyReceived(SSDPPacket packet) { // NotifyListener
        System.out.println("deviceNotifyReceived");
    }

    @Override
    public void deviceSearchResponseReceived(SSDPPacket packet) { // SearchResponseListener
        System.out.println("deviceSearchReceived");
    }
}

我不知道,为什么java控制台应用程序可以工作,而android应用程序却没有。我没有从文档中得到任何答案。有人能帮助我吗?

2 个答案:

答案 0 :(得分:1)

我解除了你的代码,使用Eclipse ADT编译它,它在运行Android 4.0(eeepc)的虚拟机(VMWare播放器)上完美运行。

Cyber​​Garage网站上有一个Android部分确实说Cyber​​Link不能在模拟器上运行,因为它还不支持多播,也许这就是你的问题。

希望不要太晚帮助。 安德鲁

答案 1 :(得分:1)

在我的情况下,它显示所有设备,可能是因为我正在使用手机而不是模拟器进行检查。