[android-developers] Having trouble making a simple UDP app.

[Julian Puppo]

Im trying to make a single UDP app in android studio. Whenever I run the 
app and press the button the app crashes. 
Im using Datagram object to make it. My code seems to be alright but I 
don´t know where the mistake is. ITS DRIVING ME CRAZY please, help me. 


This is the main activity page : 



 package lumma.e_motionvrplayer;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class MainActivity extends AppCompatActivity {

    /**
     * ATTENTION: This was auto-generated to implement the App Indexing API.
     * See https://g.co/AppIndexing/AndroidStudio for more information.
     */
    private GoogleApiClient client;

    //Cierre de la clase
    @Override

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // ATTENTION: This was auto-generated to implement the App Indexing 
API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        client = new 
GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
    }

    public void clickplay(View v) throws IOException {

        try
        {
            DatagramSocket socket = new DatagramSocket();
            byte[] buf = new byte[256];
            String messg = "play";

            buf = messg.getBytes ();
            InetAddress address = InetAddress.getByName ("255.255.255.255");
            DatagramPacket packet = new DatagramPacket(buf, buf.length, 
address, 5000);
            socket.send(packet);
        }
        catch (IOException e)
        {
        }
    }
    public void clickrestart(View v) throws IOException {
    }

    public void clickpause(View v) throws IOException {
    }
    public void clicknext(View v) throws IOException {
        }
    public void clickprev(View v) throws IOException {
        }
}

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