intentService : 为什么我的 onHandleIntent 从不被调用?

2022-09-01 13:29:22

我正在使用Android xml rpc来安装服务器。为此,我正在使用和意图服务。唯一的问题是,当服务器类启动时,包含服务器的 onHandleIntent 永远不会被调用。

我做了一些研究,我发现有人有同样的问题,他通过使用super class解决了这个问题,但我是编程新手,没有设法做他所做的事情==>链接

这是我的代码:

package tfe.rma.ciss.be;

import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlrpc.android.MethodCall;
import org.xmlrpc.android.XMLRPCServer;

import android.app.IntentService;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

import java.io.IOException;
import java.io.StringReader;
import java.net.MalformedURLException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

public class Server extends IntentService {
   public String myData="";
   public String streamTitle = "",path="";

   public void onCreate() {

        Log.d("Server", ">>>onCreate()");

    }

    public Server() {
        super("Server");


    }
    public void onStart (Intent intent, int startId) {
        Log.d("Server", ">>>Started()");    }
    @Override
    protected void onHandleIntent(Intent intent) {
        Log.d("Server", ">>>handlingIntent()");
        try {
            ServerSocket socket = new ServerSocket(8214);
            XMLRPCServer server = new XMLRPCServer();
            Log.d("Server", ">>>opening on port" + socket);
            while (true) {
                Socket client = socket.accept();
                MethodCall call = server.readMethodCall(client);
                String name = call.getMethodName();
                if (name.equals("newImage")) {
                    ArrayList<Object> params = call.getParams();
                    // assume "add" method has two Integer params, so no checks done
                   myData = (String)( params.get(0));
                    //int i1 = (Integer) params.get(1);
                    server.respond(client, new Object[] {200});
                    /*intent = new Intent (this, ParseFunction.class);
                 startService (intent);  */

                    Toast.makeText(this, myData, Toast.LENGTH_SHORT).show();  
                    Log.d("ParseFunction", ">>>Started()"); 

                    Intent i = new Intent( this, B.class );

                    i.putExtra( "Azo", myData);


                   i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    startActivity( i );

                } else {
                    server.respond(client, null);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XmlPullParserException e) {
            e.printStackTrace();
        }

    }

  }

答案 1

如果您到达此处后没有任何效果,请检查您的清单如下所示:

    <service android:name=".subpackage.ServiceClassName" >
    </service>

而不是这样:

    <service android:name=".subpackage.ServiceClassName" />

xml 结束标记存在问题。第一个有效。第二个是合法的,但不起作用。


答案 2

如果其他人想要,这里的结果是我应该做的。将超类添加到和更改(加上其超类),现在它作为一个魅力工作onCreatesuper.onCreate()onStartonStartCommandsuper.onStartCommand()

package tfe.rma.ciss.be;

import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlrpc.android.MethodCall;
import org.xmlrpc.android.XMLRPCServer;

import android.app.IntentService;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

import java.io.IOException;
import java.io.StringReader;
import java.net.MalformedURLException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

public class Server extends IntentService {
    public String myData="";
    public String streamTitle = "",path="";

    public void onCreate() {
        super.onCreate();
        Log.d("Server", ">>>onCreate()");
    }

    public Server() {
        super("Server");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        super.onStartCommand(intent, startId, startId);
        Log.i("LocalService", "Received start id " + startId + ": " + intent);

        return START_STICKY;
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        Log.d("Server", ">>>handlingIntent()");
        try {
            ServerSocket socket = new ServerSocket(8214);
            XMLRPCServer server = new XMLRPCServer();
            Log.d("Server", ">>>opening on port" + socket);

            while (true) {
                Socket client = socket.accept();
                MethodCall call = server.readMethodCall(client);
                String name = call.getMethodName();

                if (name.equals("newImage")) {
                    ArrayList<Object> params = call.getParams();
                    // assume "add" method has two Integer params, so no checks done
                    myData = (String)( params.get(0));
                    //int i1 = (Integer) params.get(1);
                    server.respond(client, new Object[] {200});
                    /*intent = new Intent (this, ParseFunction.class);
                    startService (intent);  */

                    Toast.makeText(this, myData, Toast.LENGTH_SHORT).show();  
                    Log.d("ParseFunction", ">>>Started()"); 

                    Intent i = new Intent( this, B.class );
                    i.putExtra( "Azo", myData);
                    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    startActivity( i );
                } else {
                    server.respond(client, null);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XmlPullParserException e) {
            e.printStackTrace();
        }
    }
}

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