Android connects to the server Socket and androidsocket

Android connects to the server Socket and androidsocket

Package com. example. esp8266;

Import java. io. IOException;
Import java. io. InputStream;
Import java. io. OutputStream;
Import java. io. PrintStream;
Import java.net. Socket;

Import android. app. Activity;
Import android. OS. Bundle;
Import android. OS. Handler;
Import android. OS. Message;
Import android. view. View;
Import android. widget. Button;
Import android. widget. EditText;
Import android. widget. Toast;

Public class MainActivity extends Activity {
Private EditText edSend, edReceive;
Private Button btnConnect, btnSend;
Private Handler myHandler;
Private SendThread;
Private boolean isReceive = false;
Private boolean isConnect = false;
Private static final String HOST = "192.168.4.1 ";
Private static final int PORT = 333;
String strMessage;
Socket socket = null;

@ Override
Protected void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. activity_main );
EdSend = (EditText) findViewById (R. id. edSend );
EdReceive = (EditText) findViewById (R. id. edReceive );
BtnConnect = (Button) findViewById (R. id. btConnect );
BtnSend = (Button) findViewById (R. id. btSend );
// Connection
BtnConnect. setOnClickListener (new View. OnClickListener (){

Public void onClick (View v ){
// TODO Auto-generated method stub
If (! IsConnect ){
New Thread (connectThread). start ();
IsConnect = true;
}
}
});
// Send
BtnSend. setOnClickListener (new View. OnClickListener (){

Public void onClick (View v ){
// Start the sending thread
New Thread (SendThread). start ();
}
});
MyHandler = new Handler () {// UI main thread Message Processing Function

Public void handleMessage (Message msg ){
Bundle bundle = msg. getData ();
String string = bundle. toString ();
EdReceive. setText (string );
}
};
}

// Interface for connecting to the server
Runnable connectThread = new Runnable (){

Public void run (){
// TODO Auto-generated method stub
Try {
Socket = new Socket (HOST, PORT );
If (socket! = Null)
Toast. makeText (getApplicationContext (), "connection successful ",
Toast. LENGTH_LONG). show ();
Else
Toast. makeText (getApplicationContext (), "connection failed ",
Toast. LENGTH_LONG). show ();
// Initialize the sending thread
SendThread = new SendThread (socket );
} Catch (IOException e ){
// TODO Auto-generated catch block
E. printStackTrace ();
}
}
};
// Message receiving Interface
Runnable Receive = new Runnable (){
InputStream inStream;
Private byte [] buffer;
Private String str = null;

Public void run (){
// TODO Auto-generated method stub
While (! IsReceive ){
Buffer = new byte [512];
Try {
InStream = socket. getInputStream ();
InStream. read (buffer );
} Catch (IOException e ){
E. printStackTrace ();
}
Str = new String (buffer );
Bundle bundle = new Bundle ();
Bundle. get (str );
Message message = new Message ();
Message. setData (bundle );
MyHandler. sendMessage (message );
}
}
};

// Sending thread
Private class SendThread extends Thread {
Private OutputStream outStream = null;

Private String str = null;

SendThread (Socket socket ){
Try {
OutStream = socket. getOutputStream ();
} Catch (IOException e ){
E. printStackTrace ();
}
}

Public void run (){
// While (true ){
Str = edSend. getText (). toString (). trim ();
PrintStream pt = new PrintStream (outStream );
Pt. print (str );
New Thread (Receive). start ();
//}
}
}

Protected void onDestroy (){
// TODO Auto-generated method stub
Super. onDestroy ();
If (Receive! = Null ){
IsReceive = false;
(Thread) Receive). interrupt ();
}
}

}