但问题是，我没有得到如何从集团所有者向所有或特定客户发送数据。
我尝试在存储客户端的IP之后执行此操作，但它无法正常工作。
我在过去的两天里一直在寻找这个，但还没有得到适当的解决方案。
有没有办法将数据从集团所有者发送到客户？
致电ServiceIntent
Intent serviceIntent = new Intent(getActivity(), FileTransferService.class);
serviceIntent.setAction(FileTransferService.ACTION_SEND_FILE);
serviceIntent.putExtra("data" , data1.toString());
serviceIntent.putExtra(FileTransferService.EXTRAS_GROUP_OWNER_ADDRESS,
info.groupOwnerAddress.getHostAddress());
serviceIntent.putExtra(FileTransferService.EXTRAS_GROUP_OWNER_PORT, 8988);
getActivity().startService(serviceIntent);
我尝试过替换客户端的IP而不是 info.groupOwnerAddress.getHostAddress（）。但它说主机未解决
FileTransferService.java
public class FileTransferService extends IntentService {
private static final int SOCKET_TIMEOUT = 5000;
public static final String ACTION_SEND_FILE = "com.wifidatatransfer.SEND_FILE";
// public static final String EXTRAS_FILE_PATH = "file_url";
public static final String EXTRAS_GROUP_OWNER_ADDRESS = "go_host";
public static final String EXTRAS_GROUP_OWNER_PORT = "go_port";
public FileTransferService(String name) {
super(name);
}
public FileTransferService() {
super("FileTransferService");
}
/*
* (non-Javadoc)
* @see android.app.IntentService#onHandleIntent(android.content.Intent)
*/
@Override
protected void onHandleIntent(Intent intent) {
Context context = getApplicationContext();
if (intent.getAction().equals(ACTION_SEND_FILE)) {
String data = intent.getExtras().getString("data");
String host = intent.getExtras().getString(EXTRAS_GROUP_OWNER_ADDRESS);
Socket socket = new Socket();
int port = intent.getExtras().getInt(EXTRAS_GROUP_OWNER_PORT);
try {
Log.d(WiFiDirectActivity.TAG, "Opening client socket - "+host+":::::"+port);
socket.bind(null);
socket.connect((new InetSocketAddress(host, port)), SOCKET_TIMEOUT);
Log.d(WiFiDirectActivity.TAG, "Client socket - " + socket.isConnected());
OutputStream stream = socket.getOutputStream();
String stringToConvert = "This is my data";
byte[] theByteArray = stringToConvert.getBytes();
stream.write(theByteArray);
ContentResolver cr = context.getContentResolver();
InputStream is = null;
try {
is = new ByteArrayInputStream(data.getBytes());
} catch (Exception e) {
Log.d(WiFiDirectActivity.TAG, e.toString());
}
DeviceDetailFragment.copyFile(is, stream);
Log.d(WiFiDirectActivity.TAG, "Client: Data written");
} catch (IOException e) {
Log.e(WiFiDirectActivity.TAG, e.getMessage());
} finally {
if (socket != null) {
if (socket.isConnected()) {
try {
socket.close();
} catch (IOException e) {
// Give up
e.printStackTrace();
}
}
}
}
}
}
}
FileServerAsyncTask
public static class FileServerAsyncTask extends AsyncTask<Void, Void, String> {
private Context context;
private TextView statusText;
private int port;
/**
* @param context
* @param statusText
*/
public FileServerAsyncTask(Context context, View statusText , int port) {
this.context = context;
this.statusText = (TextView) statusText;
this.port=port;
}
@Override
protected String doInBackground(Void... params) {
if (info.groupFormed && info.isGroupOwner) {
try {
ServerSocket serverSocket = new ServerSocket(port);
Log.d(WiFiDirectActivity.TAG, "Server: Socket opened");
Socket client = serverSocket.accept();
Log.d(WiFiDirectActivity.TAG, "Server: connection done");
InputStream inputstream = client.getInputStream();
String gotData = convertStreamToString(inputstream);
Log.d(WiFiDirectActivity.TAG, "server: copying files " + gotData);
return gotData;
} catch (IOException e) {
Log.e(WiFiDirectActivity.TAG, e.getMessage());
return null;
}
}else{
try {
ServerSocket serverSocket = new ServerSocket(port);
Socket ss= serverSocket.accept();
OutputStream os= ss.getOutputStream();
return os.toString();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
/*
* (non-Javadoc)
* @see android.os.AsyncTask#onPostExecute(java.lang.Object)
*/
@Override
protected void onPostExecute(String result) {
if (result != null) {
statusText.setText("File copied - " + result);
Toast.makeText(context , "Result is:::::"+result, Toast.LENGTH_LONG).show();
}
}
onConnectionInfoAvailable（（）
@Override
public void onConnectionInfoAvailable(final WifiP2pInfo info) {
if (progressDialog != null && progressDialog.isShowing()) {
progressDialog.dismiss();
}
System.out.println("CONNECTION INFO AVAILABLE:::::::::;Group Owner IP - " + info.groupOwnerAddress.getHostAddress());
this.info = info;
this.getView().setVisibility(View.VISIBLE);
// The owner IP is now known.
TextView view = (TextView) mContentView.findViewById(R.id.group_owner);
view.setText(getResources().getString(R.string.group_owner_text)
+ ((info.isGroupOwner == true) ? getResources().getString(R.string.yes)
: getResources().getString(R.string.no)));
// InetAddress from WifiP2pInfo struct.
view = (TextView) mContentView.findViewById(R.id.device_info);
System.out.println("Group Owner IP - " + info.groupOwnerAddress.getHostAddress());
view.setText("Group Owner IP - " + info.groupOwnerAddress.getHostAddress());
// After the group negotiation, we assign the group owner as the file
// server. The file server is single threaded, single connection server
// socket.
if (info.groupFormed && info.isGroupOwner) {
new FileServerAsyncTask(getActivity(), mContentView.findViewById(R.id.status_text),8988)
.execute();
mContentView.findViewById(R.id.btn_start_client).setVisibility(View.VISIBLE);
} else if (info.groupFormed) {
// The other device acts as the client. In this case, we enable the
// get file button.
clientIP=info.groupOwnerAddress.getHostAddress();
mContentView.findViewById(R.id.btn_start_client).setVisibility(View.VISIBLE);
((TextView) mContentView.findViewById(R.id.status_text)).setText(getResources()
.getString(R.string.client_text));
}
// hide the connect button
mContentView.findViewById(R.id.btn_connect).setVisibility(View.GONE);
}