android stdudio 之udp发送数据

	
	

	

		
		
package com.geanyan.udpchatwithpc;

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

import my.test.R;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {
    private final String DEBUG_TAG = "Sample_5_1";

    private EditText mEditText = null;
    private Button mButton = null;
    private TextView mTextView = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mButton = (Button) findViewById(R.id.btnSendMsg);
        mTextView = (TextView) findViewById(R.id.txtInfo);
        mEditText = (EditText) findViewById(R.id.edtTxtMsg);

        mButton.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {

                try {
                    byte[] buffer = new byte[1024];
                    String str = mEditText.getText().toString();
                    //mEditText.setText("");
                    buffer = str.getBytes();

                    DatagramSocket socket = new DatagramSocket(8889);

                    InetAddress serverAddress = InetAddress.getByName("192.168.1.100");
                    DatagramPacket packet = new DatagramPacket(buffer,buffer.length);
                    packet.setAddress(serverAddress);
                    packet.setPort(10001);
                    socket.send(packet);
                    mTextView.append("has send");

                    socket.close();
                }
                catch (Exception e) {
                    Log.e(DEBUG_TAG, e.toString());
                }
            }
        });
    }
}

		

			192.168.1.100未电脑ip地址，打开tcp调试助手，udp监听端口为8889，点击手机发送按钮，即可收到来自手机的数据。