socket给服务端发送范围超过127的数据
private EditText ipStr;
private EditText portStr;
private EditText msgStr;
private TextView serverStr;
private String IP="192.168.1.100";
private String PORT="1000";
private char test[]={0x55,0xaa,0x01};
byte[] test2=new byte[20];
private Socket s = null;
private PrintWriter pw = null;
private BufferedReader br=null;
private Thread mThread=null;


@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final Button btnSend = (Button) findViewById(R.id.btnSend);
btnSend.setOnClickListener(onClickListener);
ipStr = (EditText) findViewById(R.id.ipStr);
ipStr.setText(IP);
portStr = (EditText) findViewById(R.id.portStr);
portStr.setText(PORT);
msgStr = (EditText) findViewById(R.id.msgStr);
serverStr = (TextView) findViewById(R.id.serverStr);
String port = portStr.getText().toString().trim();

try{
s=new Socket(IP, Integer.parseInt(port));
pw=new PrintWriter(new OutputStreamWriter(s.getOutputStream()), true);
//new OutputStreamWriter(socket.getOutputStream()));

br = new BufferedReader(new InputStreamReader(s.getInputStream()));
}catch (Exception e) {
e.printStackTrace();
}
mThread=new Thread(mRunnable);
mThread.start();
}

private OnClickListener onClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
new Thread(new TCPAndroidClient()).run();
}
};

class TCPAndroidClient implements Runnable {
String msg = msgStr.getText().toString().trim();
@Override
public void run() {
if (s.isConnected()) {
if (!s.isOutputShutdown()) {
pw.println(test);

}
}
}

客户端接收到的数据是55 C2 AA 01 0A，那个aa前面有个C2，不知道为什么，只要test[]内有个大于0x7f的char,就会多了个C2,为什么

[解决办法]