[英]From C# to Android via Socket. Can't find my mistake
问题-我无法使此功能正常工作。 我在LogCat中看到套接字已连接到C#服务器,但没有看到接收到的数据。 我做错了什么?
这是带有MessageBoxes的c#函数,用于检查:
private void receiveConnection(){
Socket myHandler = null;
bool isConnected = false;
while (true)
{
if (!isConnected)
{
myHandler = wSocket.Accept();
isConnected = true;
MessageBox.Show("We have client!");
}
if (sendDataToAndroid)
{
try
{
sendDataToAndroid = false;
NetworkStream stream = new NetworkStream(myHandler);
StreamWriter sw = new StreamWriter(stream);
string myMsg = "";
myMsg += temp_F.Length + " ";
temp_F[0] = 3.151F;
temp_F[1] = 1.415F;
temp_F[2] = 5.572F;
temp_F[3] = 6.320F;
for (int i = 0; i < temp_F.Length; i++)
{
myMsg += temp_F[i] + " ";
}
byte[] msg = Encoding.ASCII.GetBytes(myMsg);
MessageBox.Show("Data to send: " + myMsg);
try
{
myHandler.Send(msg);
MessageBox.Show("Data has been sent!");
}
catch (Exception e) {
MessageBox.Show("Error while sending data!");
}
}
catch (Exception e)
{
isConnected = false;
myHandler.Close();
myHandler = null;
MessageBox.Show("Error while sending data...");
}
}
}
}
这是始终尝试接收数据的Android函数:
public class SendThread implements Runnable {
public void run()
{
Socket socket = null;
BufferedReader in = null;
while (true)
{
// Loop until connected to server
while (socket == null){
try{
socket = new Socket ("192.168.137.1", 808);
}
catch (Exception e) {
socket = null;
}
}
// Get from the server
try {
Log.d("Connection: ", "connected");
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
Log.d("Socket:", line);
NumberFormat nf = new DecimalFormat ("990,0");
String[] tokens = line.split(" ");
int currTempSize = Integer.parseInt(tokens[0]);
currentTemp = new double[currTempSize];
for (int i = 0; i < currTempSize; i++)
currentTemp[i] = (Double) nf.parse(tokens[i+1]);
//Toast.makeText(getApplicationContext(), "Received data:", duration)
for (int i = 0; i < currTempSize; i++){
Log.d("Converted data: currentTemp["+i+"] = ", currentTemp[i]+"");
}
}
}
catch (Exception e) {
socket = null;
in = null;
Log.d("Connection: ", "lost.");
}
}
}
}
您的Java代码一次读取一行,但是您从未从C#发送行终止符。
您可以手动将其附加到myMsg
,也可以在StreamWriter
上使用sw.WriteLine()
方法(否则该方法似乎没有使用)。 调用sw.WriteLine()
您可能必须调用sw.Flush()
。
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