我可以将数据发送到服务器，但不能接收数据。
如何从服务器获取数据。我使用Golang服务器。服务器向我发送了邮件，但我什么也收不到。我认为TcpClient或ConnectTask类中的run Function出错。我也在清单中添加了Internt权限。
这是我的mainActivity：
public class MainActivity extends AppCompatActivity {
TcpClient mTcpClient;
Button send;
TextView txt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
send= (Button)findViewById(R.id.send);
txt= (TextView) findViewById(R.id.txt);
new ConnectTask().execute("");
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
txt.setText(show);
String message="hhhhhhhhhhhhh";
if (mTcpClient != null)
{
mTcpClient.sendMessage(message);
}
}
});
}
/////////////////// class ////////////////
public class ConnectTask extends AsyncTask<String, String, TcpClient> {
@Override
protected TcpClient doInBackground(String... message) {
//we create a TCPClient object
mTcpClient = new TcpClient(new TcpClient.OnMessageReceived() {
@Override
//here the messageReceived method is implemented
public void messageReceived(String message) {
//this method calls the onProgressUpdate
Toast.makeText(getApplicationContext() ,"NO Message", Toast.LENGTH_LONG).show();
publishProgress(message);
}
});
mTcpClient.run();
return null;
}
@Override
protected void onProgressUpdate(String... values) {
super.onProgressUpdate(values);
txt.setText(values[0] );
}//onProgressUpdate
}//ConnectTask
}//class
还有我的TcpClient类：
public class TcpClient {
public static final String TAG = TcpClient.class.getSimpleName();
public static final String SERVER_IP = "192.168.1.2"; //server IP address
public static final int SERVER_PORT = 37533;
// message to send to the server
private String mServerMessage;
// sends message received notifications
private OnMessageReceived mMessageListener = null;
// while this is true, the server will continue running
private boolean mRun = false;
// used to send messages
private PrintWriter mBufferOut;
// used to read messages from the server
private BufferedReader mBufferIn;
private InetAddress serverAddr;
private Socket socket;
public TcpClient(OnMessageReceived listener) {
mMessageListener = listener;
}
public void sendMessage(final String message) {
Runnable runnable = new Runnable() {
@Override
public void run() {
if (mBufferOut != null) {
mBufferOut.println(message);
mBufferOut.flush();
}
}
};
Thread thread = new Thread(runnable);
thread.start();
}
public void stopClient() {
mRun = false;
if (mBufferOut != null) {
mBufferOut.flush();
mBufferOut.close();
}
mMessageListener = null;
mBufferIn = null;
mBufferOut = null;
mServerMessage = null;
}
public void run() {
mRun = true;
try {
serverAddr = InetAddress.getByName(SERVER_IP);
socket = new Socket(serverAddr, SERVER_PORT);
try {
mBufferOut = new PrintWriter(socket.getOutputStream());
mBufferIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
int charsRead = 0;
char[] buffer = new char[2048]; //choose your buffer size if you need other than 1024
charsRead = mBufferIn.read(buffer);
mServerMessage = new String(buffer).substring(0, charsRead);
while (mRun)
{
if (mServerMessage != null && mMessageListener != null)
{
mMessageListener.messageReceived(mServerMessage);
}
mServerMessage = null;
}
} catch (Exception e) {
} finally {
//the socket must be closed. It is not possible to reconnect to this socket
// after it is closed, which means a new socket instance has to be created.
socket.close();
}
} catch (Exception e) {
}
}
//Declare the interface. The method messageReceived(String message) will must be implemented in the Activity
//class at on AsyncTask doInBackground
public interface OnMessageReceived {
public void messageReceived(String message);
}
}//class TcpClient