我有一个服务器/客户端应用程序，我想在客户端上发送和显示服务器的屏幕截图。任何身体都可以帮助我。感谢
代码如下
服务器端
public class ServerActivity extends Activity {
private TextView serverStatus;
RelativeLayout mainLayout;
// default ip
public static String SERVERIP = "10.0.2.15";
// designate a port
public static final int SERVERPORT = 8080;
private Handler handler = new Handler();
private ServerSocket serverSocket;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.server);
serverStatus = (TextView) findViewById(R.id.server_status);
SERVERIP = getLocalIpAddress();
Thread fst = new Thread(new ServerThread());
fst.start();
}
public class ServerThread implements Runnable {
public void run() {
try {
if (SERVERIP != null) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Listening on IP: " + SERVERIP);
}
});
serverSocket = new ServerSocket(SERVERPORT);
while (true) {
// listen for incoming clients
Socket client = serverSocket.accept();
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Connected");
mainLayout = (RelativeLayout)findViewById(R.id.screen);
ImageView iv =(ImageView)findViewById(R.id.iv);
File root = Environment.getExternalStorageDirectory();
File file = new File(root,"androidlife.jpg");
Bitmap b = Bitmap.createBitmap(mainLayout.getWidth(), mainLayout
.getHeight(), Bitmap.Config.ARGB_8888);
iv.setImageBitmap(b);
Canvas c = new Canvas(b);
mainLayout.draw(c);
//serverStatus.setText("Screenshot is displaying");
}
});
try {
BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
//receive a message
String incomingMsg = in.readLine() + System.getProperty("line.separator");
Log.i("TcpServer", "received: " + incomingMsg);
serverStatus.setText("received: " + incomingMsg);
//send a message
String outgoingMsg = "goodbye from port " + SERVERPORT + System.getProperty("line.separator");
out.write(outgoingMsg);
//out.flush();
Log.i("TcpServer", "sent: " + outgoingMsg);
serverStatus.setText("sent: " + outgoingMsg);
//while ((line = in.readLine()) != null)
handler.post(new Runnable() {
@Override
public void run() {
}
});
// }
break;
}
catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Oops. Connection interrupted. Please reconnect your phones.");
}
});
e.printStackTrace();
}
}
} else {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Couldn't detect internet connection.");
}
});
}
} catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Error");
}
});
e.printStackTrace();
}
}
}
// gets the ip address of your phone's network
private String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) { return inetAddress.getHostAddress().toString(); }
}
}
} catch (SocketException ex) {
Log.e("ServerActivity", ex.toString());
}
return null;
}
@Override
protected void onStop() {
super.onStop();
try {
// make sure you close the socket upon exiting
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
客户端代码是：
public class ClientActivity extends Activity {
public EditText serverIp;
public TextView tv;
private Button connectPhones;
private String serverIpAddress = "";
private static final int SERVERPORT = 8080;
private boolean connected = false;
//private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.client);
serverIp = (EditText) findViewById(R.id.server_ip);
connectPhones = (Button) findViewById(R.id.connect_phones);
connectPhones.setOnClickListener(connectListener);
}
private OnClickListener connectListener = new OnClickListener() {
@Override
public void onClick(View v) {
// if(true)
if (!connected) {
serverIpAddress = serverIp.getText().toString();
if (!serverIpAddress.equals("")) {
Thread cThread = new Thread(new ClientThread());
cThread.start();
}
}
}
};
public class ClientThread implements Runnable {
public void run() {
try {
InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
Log.d("ClientActivity", "C: Connecting...");
Socket socket = new Socket(serverAddr, SERVERPORT);
connected = true;
while (connected) {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
//send output msg
String outMsg = "TCP connecting to " + SERVERPORT + System.getProperty("line.separator");
out.write(outMsg);
out.flush();
Log.i("TcpClient", "sent: " + outMsg);
//accept server response
String inMsg = in.readLine() + System.getProperty("line.separator");
tv.setText("message from server"+ inMsg);
Log.i("TcpClient", "received: " + inMsg);
// ImageView iv = (ImageView)findViewById(R.id.iv);
// iv.setImageBitmap(bm);
Log.d("ClientActivity", "C: Sent.");
} catch (Exception e) {
Log.e("ClientActivity", "S: Error", e);
}
}
socket.close();
Log.d("ClientActivity", "C: Closed.");
} catch (Exception e) {
Log.e("ClientActivity", "C: Error", e);
connected = false;
}
}
}
}
答案 0 :(得分：4)
我在你的代码中没有看到你在哪里发送图像或屏幕截图的位图！你不能发送一个位图通过套接字你应该在创建位图b后在发送方添加它来创建位图之外的字节数组：
ByteArrayOutputStream stream = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
在服务器端接收器中使用bytearray，然后以这种方式重新调整位图：
Bitmap breceived = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);