求大神看一下 在网上也没有搜到报这个readLine错误的 是一个聊天室的客户端MainAcitivity的代码如下
package com.example.mysocketclient;
import androidx.appcompat.app.AppCompatActivity;
import android.annotation.SuppressLint;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Text;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.UnknownHostException;
public class MainActivity extends AppCompatActivity {
EditText editTextIp;
EditText editTextContent;
TextView textViewContent;
Button btnConnect;
Button btnSend;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextIp = findViewById(R.id.editTextIp);
editTextContent = findViewById(R.id.editTextContent);
textViewContent = findViewById(R.id.textViewContent);
btnConnect =findViewById(R.id.btnConnect);
btnSend = findViewById(R.id.btnSend);
btnConnect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
connect();
}
});
btnSend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
send();
}
});
}
//-----------------------------------
Socket socket = null;
BufferedWriter writer = null;
BufferedReader reader = null;
public void connect() {
AsyncTask<Void, String, Void> read = new AsyncTask<Void, String, Void>() {
@SuppressLint("WrongThread")
@Override
protected Void doInBackground(Void... voids) {
try {
socket = new Socket(editTextIp.getText().toString(),12345);
writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
publishProgress("@success");
} catch (UnknownHostException e1) {
//Toast.makeText(MainActivity.this, "无法建立链接", Toast.LENGTH_SHORT).show();
e1.printStackTrace();
} catch (IOException e1) {
//Toast.makeText(MainActivity.this, "无法建立链接", Toast.LENGTH_SHORT).show();
e1.printStackTrace();
}
try {
String line;
while ( (line = reader.readLine()) != null ) {
publishProgress(line);
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onProgressUpdate (String...values){
if (values[0].equals("@success")) {
Toast.makeText(MainActivity.this, "成功建立链接", Toast.LENGTH_SHORT).show();
}
textViewContent.append("别人说: "+values[0]+"\n");
super.onProgressUpdate(values);
}
};
read.execute();
}
public void send () {
try {
textViewContent.append("我说: "+editTextContent.getText().toString()+"\n");
writer.write(editTextContent.getText().toString()+"\n");
writer.flush();
editTextContent.setText("");
} catch (IOException e) {
e.printStackTrace();
}
}
}