[Solved] Simple sharing text and number App(Client-side) over internet [closed]

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There are multiple ways to approach this problem (REST, WebSocket, etc.) I recommend using sockets in this case but I’ll leave it up to you to read up on the pros/cons of different approaches.

Socket.IO has a popular Android library for real-time bidirectional event-based communication between two nodes.

At a high level, to use Socket.IO in your application, you first need to create an instance of it. This will allow you to send and receive messages. For example:

private Socket mSocket;
mSocket = IO.socket("http://chat.socket.io");
mSocket.connect();

To send a message, you need to emit to an event. Let’s call this event "new message". The following code sends a message using emit.

mSocket.emit("new message", message);

In a chat application, you would emit a new message when the user clicks the Send button. In your specific case, you need to first get the value of your EditText like this:

mEditText.getText().toString()

and then emit your message in your Send button’s OnClickListener.

Now that we know how to send a message, we need to know how to receive a message. To receive a message, you need to listen on an event, as opposed to emitting on an event.

mSocket.on("new message", onNewMessage);

The above line will listen for a "new message" event, and execute the behavior set in onNewMessage, which is a Listener. In your chat application, you can update a TextView with the new message by adding the logic in your Listener.

mTextView.setText(message);

To recap, you need to:

  1. Create a Socket.IO instance
  2. When the user clicks Send, grab the text from the EditText and emit it
  3. Listen for a message and update the TextView

Details on implementation can be found in Socket.IO’s Android tutorial. I highly recommend that you take a look at this as it is a complete, working example.

Hope this helps!

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solved Simple sharing text and number App(Client-side) over internet [closed]