我正在开发一个项目，客户端将其活动的屏幕截图发送到服务器，其中位图转换为字符串。对我而言，它运行良好。我想在此项目中添加客户端和服务器之间的聊天。如何我能做到这一点吗？接受任何形式的帮助。
客户代码
public class Client2 extends AsyncTask<Void, Void, Void> {
public static String dstAddress;
int dstPort;
String response= new String() ;
String msg_server=new String();
Context context;
public static ArrayList<Bitmap>ss=new ArrayList<>();
public static Socket socket;
Client2(Context ic,String addr, int port,String msg) {
context=ic;
dstAddress = addr;
dstPort = port;
msg_server=msg;
}
@Override
protected Void doInBackground(Void... arg0) {
socket = null;
ObjectOutputStream dataOutputStream = null;
ObjectInputStream dataInputStream = null;
try {
socket = new Socket(dstAddress, dstPort);
dataOutputStream = new ObjectOutputStream(
socket.getOutputStream());
dataInputStream = new ObjectInputStream(socket.getInputStream());
if(msg_server != null){
dataOutputStream.writeObject(msg_server);
dataOutputStream.flush();
}
response = (String) dataInputStream.readObject();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "UnknownHostException: " + e.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "IOException: " + e.toString();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} finally {
if (socket != null) {
try { socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataOutputStream != null) {
try {
dataOutputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataInputStream != null) {
try {
dataInputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Toast.makeText(context, response, Toast.LENGTH_SHORT).show();
}}
服务器代码
public class Server extends Thread{
ServerSocket serverSocket;
Viewer activity;
static final int SocketServerPORT = 8080;
int count = 0;
int sc=0;
Bitmap bmviewer;
String msgtoclient,msgfromclient;
ArrayList<Bitmap>ser=new ArrayList<>();
public Server(Activity context,String msg )
{
activity= (Viewer) context;
msgtoclient=msg;
}
@Override
public void run() {
Socket socket = null;
ObjectInputStream dataInputStream = null;
ObjectOutputStream dataOutputStream = null;
try {
// serverSocket = new ServerSocket(SocketServerPORT);
serverSocket = new ServerSocket(); // <-- create an unbound socket first
serverSocket.setReuseAddress(true);
serverSocket.bind(new InetSocketAddress(SocketServerPORT));// serverSocket.setReuseAddress(true);
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
Viewer.demo.setText("Port No: "
+ serverSocket.getLocalPort());
}
});
while (true) {
socket = serverSocket.accept();
dataInputStream = new ObjectInputStream(
socket.getInputStream());
dataOutputStream = new ObjectOutputStream(
socket.getOutputStream());
String messageFromClient = new String();
//If no message sent from client, this code will block the program
messageFromClient = (String) dataInputStream.readObject();
count++;
bmviewer = (stringtobitmap(messageFromClient));
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
//Viewer.demo.setText(message);
sc++;
saveimage(bmviewer, sc);
// Viewer.images.setImageBitmap(bmviewer);
Viewer.imageGallery.addView(getImageView(bmviewer));
}
});
if (msgtoclient.equals("")){
String reply="received";
dataOutputStream.writeObject(reply);
dataOutputStream.flush();}
else {
dataOutputStream.writeObject(msgtoclient);
dataOutputStream.flush();
}
}
}catch(EOFException e){
e.printStackTrace();
final String errMsg = e.toString();
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
Snackbar snackbar=Snackbar.make(Viewer.relativeLayout,errMsg,Snackbar.LENGTH_LONG);
snackbar.show();
}
});
} catch(IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
final String errMsg = e.toString();
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
Snackbar snackbar=Snackbar.make(Viewer.relativeLayout,errMsg,Snackbar.LENGTH_LONG);
snackbar.show();
}
});
} catch (ClassNotFoundException e) {
e.printStackTrace();
} finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataInputStream != null) {
try {
dataInputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataOutputStream != null) {
try {
dataOutputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
private View getImageView(Bitmap image) {
ImageView imageView = new ImageView(activity);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(0, 0, 10, 0);
imageView.setLayoutParams(lp);
imageView.setImageBitmap(image);
return imageView;
}
private void saveimage(Bitmap bmp,int c) {
sc=c;
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/screenshare_viewer");
myDir.mkdirs();
//Random generator = new Random();
// int n = 10000;
// n = generator.nextInt(n);
String fname = "Image-"+sc +".jpg";
File file = new File (myDir, fname);
if (file.exists ()) file.delete ();
try {
FileOutputStream out = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private Bitmap stringtobitmap(String message) {
try{
byte [] encodeByte= Base64.decode(message,Base64.DEFAULT);
Bitmap bitmap= BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length);
return bitmap;
}
catch(Exception e){
e.getMessage();
return null;
}
}
}