1 package mao.example.quicksend; 2  3  4 import android.app.Activity; 5 import android.content.Context; 6 import android.os.Bundle; 7 import android.os.Handler; 8 import android.util.Log; 9 import android.view.Menu;10 import android.view.MenuItem;11 import android.widget.Button;12 import android.widget.TextView;13 import android.widget.Toast;14 import android.view.View;15 16 public class MainActivity extends Activity {17     18     @Override19     protected void onCreate(Bundle savedInstanceState) {20         super.onCreate(savedInstanceState);21         setContentView(R.layout.activity_main);22         23         InitUI();24         25         //获得Button对象26         Button btnConnect = (Button) findViewById(R.id.buttonConnect);27         btnConnect.setOnClickListener(new Button.OnClickListener() {28             public void onClick(View v)29             {30                 //这里处理事件31                 32                 //ConnectServer();33                 //UDPClient udpET = new UDPClient("192.168.0.14","123");34                 //udpET.start();35                 //DisplayToast("点击了\"连接\"按钮");36             }37         });38         39         //发送Button40         btnConnect = (Button) findViewById(R.id.buttonSend);41         btnConnect.setOnClickListener(new Button.OnClickListener() {42             public void onClick(View v)43             {44                 //这里处理事件45                 SendText();46             }47         });48     }49 50     @Override51     public boolean onCreateOptionsMenu(Menu menu) {52         // Inflate the menu; this adds items to the action bar if it is present.53         getMenuInflater().inflate(R.menu.main, menu);54         return true;55     }56 57     @Override58     public boolean onOptionsItemSelected(MenuItem item) {59         // Handle action bar item clicks here. The action bar will60         // automatically handle clicks on the Home/Up button, so long61         // as you specify a parent activity in AndroidManifest.xml.62         int id = item.getItemId();63         if (id == R.id.action_settings) {64             return true;65         }66         return super.onOptionsItemSelected(item);67     }68     69     /* 显示Toast  */70     public void DisplayToast(String str)71     {72         Toast.makeText(this, str, Toast.LENGTH_SHORT).show();73     }74     75     public void InitUI()76     {77         TextView text=(TextView)findViewById(R.id.editTextIP);78         text.setText("192.168.0.14");79         80         text = (TextView)findViewById(R.id.editTextFilePath);81         text.setText("Udp Client Send Test");82     }83     84     // connect server85     public void SendText() 86     {87         TextView editIP=(TextView)findViewById(R.id.editTextIP);88         TextView editText=(TextView)findViewById(R.id.editTextFilePath);89         String message = editText.getText().toString() + "\r\n"; 90         91         UDPClient udpET = new UDPClient(editIP.getText().toString(), message);92         udpET.start();93     }94 }

 1 package mao.example.quicksend; 2  3 import java.io.IOException; 4 import java.net.DatagramPacket; 5 import java.net.DatagramSocket; 6 import java.net.InetAddress; 7 import java.net.SocketException; 8 import java.lang.String; 9 10 public class UDPClient extends Thread{11 12     public String m_serverIP;13     public String m_text;14     15     public  UDPClient(String strServerIP, String strText)16     {17         m_serverIP = strServerIP;18         m_text = strText;19     }20     21     @Override22     public void run() {23         // TODO Auto-generated method stub24         int TIMEOUT = 3000;25         int servPort = 8800;26         byte[] bytesToSend = m_text.getBytes();//"test_client".getBytes();27 28         try {29             InetAddress serverAddress = InetAddress.getByName(m_serverIP);30             DatagramSocket socket = new DatagramSocket();31             socket.setSoTimeout(TIMEOUT);32             33             DatagramPacket sendPacket = new DatagramPacket(bytesToSend,bytesToSend.length,serverAddress,servPort);34             socket.send(sendPacket);35                 36             socket.close();37         } catch (SocketException e){38             e.printStackTrace();39         }catch(IOException e){40             e.printStackTrace();41         }42     }43 }

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2     xmlns:tools="http://schemas.android.com/tools" 3     android:id="@+id/LinearLayout1" 4     android:layout_width="match_parent" 5     android:layout_height="match_parent" 6     android:orientation="vertical" 7     android:paddingBottom="@dimen/activity_vertical_margin" 8     android:paddingLeft="@dimen/activity_horizontal_margin" 9     android:paddingRight="@dimen/activity_horizontal_margin"10     android:paddingTop="@dimen/activity_vertical_margin"11     tools:context="mao.example.quicksend.MainActivity" >12 13     <EditText14         android:id="@+id/editTextIP"15         android:layout_width="match_parent"16         android:layout_height="wrap_content"17         android:hint="@string/text_IP" />18 19     <Button20         android:id="@+id/buttonConnect"21         android:layout_width="match_parent"22         android:layout_height="wrap_content"23         android:text="@string/text_connect" />24 25     <EditText26         android:id="@+id/editTextFilePath"27         android:layout_width="match_parent"28         android:layout_height="wrap_content"29         android:hint="@string/text_filePath" >30 31         <requestFocus />32     </EditText>33 34     <Button35         android:id="@+id/buttonFileSel"36         android:layout_width="match_parent"37         android:layout_height="wrap_content"38         android:text="@string/text_sel" />39 40     <Button41         android:id="@+id/buttonSend"42         android:layout_width="match_parent"43         android:layout_height="wrap_content"44         android:text="@string/text_send" />45 46 </LinearLayout>