============问题描述============

package com.example.udpclient;

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

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

public class MainActivity extends Activity
{
	private static final int MAX_DATA_PACKET_LENGTH = 100;  
    private byte[] buffer = new byte[MAX_DATA_PACKET_LENGTH];  
    private DatagramPacket dataPacket = null;  
    private DatagramSocket udpSocket = null;  
    
	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		Thread thread = new Thread(runnable);
		thread.start();
	}
	
	Runnable runnable = new Runnable()
	{
		@Override
		public void run()
		{
			// TODO Auto-generated method stub
			try
			{
				udpSocket = new DatagramSocket(5000);
				dataPacket = new DatagramPacket(buffer, MAX_DATA_PACKET_LENGTH);  
				Log.v("packet", "pakcet built!");
		        String str = "hello,jdh";  //这是要传输的数据  
		        byte out [] = new byte[]{(byte)127, (byte)17, (byte)10};  //把传输内容分解成字节  
		        dataPacket.setData(out);
		        dataPacket.setLength(out.length);
		        Log.v("packet length", "pakcet length!");
		        try
				{
					dataPacket.setAddress(InetAddress.getByName("10.13.33.136"));
					dataPacket.setPort(5000);
					Log.v("packet port", "pakcet port!");
				} catch (UnknownHostException e)
				{
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			} catch (SocketException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			try
			{
				udpSocket.send(dataPacket);
				Log.v("packet sent", "packet sent!");
			} catch (IOException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	};
}
电脑写的客户端可以发送给服务器，但是手机端这个客户端却发送不成功，10.13.33.136是我本机ip，我手机连的是wifi。求解，是不是手机端写的哪里有问题？谢啦！

============解决方案1============

android udp编程