android客户端为什么不能发送消息给服务器

[guye880729]

本人用的是UDP，现在客户端不能发消息给服务器，不知道怎么回事

代码如下：
客户端代码
public class ChatRoom extends Activity {
private EditText chattxt;
private TextView chattxt2;
private Button chatok;



/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.chatroom);
findviews();
setonclick();
}

public void findviews() {
chattxt = (EditText) this.findViewById(R.id.chattxt);
chattxt2 = (TextView) this.findViewById(R.id.chattxt2);
chatok = (Button) this.findViewById(R.id.chatOk);
}

private void setonclick() {
chatok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
connecttoserver(chattxt.getText().toString());
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}


public void connecttoserver(String socketData) throws UnknownHostException, IOException
{
byte[] buf=new byte[500];
socketData.getBytes(0,socketData.length(),buf,0);
//连接服务器
DatagramPacket sendPacket=new DatagramPacket(buf, socketData.length(), new InetSocketAddress("10.0.2.2",5000));
DatagramSocket sendSocket=new DatagramSocket( 9999);//有时候这里老报这里端口被占
//发送数据包
sendSocket.send(sendPacket);
sendSocket.close();

}

public void receiveMessage()
{
try {
DatagramSocket receiveSocket=new DatagramSocket(5000);
byte buf[]=new byte[500];
DatagramPacket receivePacket=new DatagramPacket(buf, buf.length);

while(true)
{
receiveSocket.receive(receivePacket);//接收数据包
String msg=new String(receivePacket.getData(),0,receivePacket.getLength());
this.chattxt2.append(msg+"\n");//显示接收到的信息
}

} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}


}
}

请高手帮忙指点一下！！！

[Appoule]

跑一遍，抓log来看

[guobaoaskformore]

UDP发送消息，发送端sendSocket不要绑定某个端口的
你对sendSocket，receiveSocket都没有释放资源，建议ondestroy（）和finally中执行sendSocket.disconnect();sendSocket.close();

[guobaoaskformore]

//连接服务器
DatagramPacket sendPacket=new DatagramPacket(buf, socketData.length(), new InetSocketAddress("10.0.2.2",5000));
改为
DatagramPacket sendPacket=new DatagramPacket(buf, socketData.length(), InetAddress.getByName("10.0.2.2",)，5000);
试试看吧

[freddiexian]

[Quote=引用 2 楼 guobaoaskformore 的回复:]
UDP发送消息，发送端sendSocket不要绑定某个端口的
你对sendSocket，receiveSocket都没有释放资源，建议ondestroy（）和finally中执行sendSocket.disconnect();sendSocket.close();
[/Quote]有道理啊。。

[zxciop110]

换端口