Вы можете попробовать этот код.
FileTransferManager ftm1 = FileTransferManager.getInstanceFor(connection);
FileTransferManager ftm2 = FileTransferManager.getInstanceFor(connection2);
ftm2.addFileTransferListener(new FileTransferListener() {
@Override
public void fileTransferRequest(FileTransferRequest request) {
IncomingFileTransfer ift = request.accept();
try {
InputStream is = ift.recieveFile();
ByteArrayOutputStream os = new ByteArrayOutputStream();
int nRead;
byte[] buf = new byte[1024];
while ((nRead = is.read(buf, 0, buf.length)) != -1) {
os.write(buf, 0, nRead);
}
os.flush();
dataReceived = os.toByteArray();
} catch (SmackException | IOException | XMPPErrorException e) {
e.printStackTrace();
}
if (Arrays.equals(dataToSend, dataReceived)) {
System.out.println("Received data matches send data. \\o/");
} else {
System.err.println("Recieved data DOES NOT match send data. :(");
}
}
});
OutgoingFileTransfer oft = ftm1.createOutgoingFileTransfer(XmppStringUtils.completeJidFrom(USER, SERV, "resourse"));
oft.sendStream(new ByteArrayInputStream(dataToSend), "hello.txt", dataToSend.length, "A greeting");
outerloop: while (!oft.isDone()) {
switch (oft.getStatus()) {
case error:
System.out.println("Filetransfer error: " + oft.getError());
break outerloop;
default:
System.out.println("Filetransfer status: " + oft.getStatus() + ". Progress: " + oft.getProgress());
break;
}
Thread.sleep(1000);
}
connection.disconnect();
connection2.disconnect();
Thread.sleep(1000);
}
См. Передача файлов не работает smack 4.1 android