How to pass XMPPTCPConnection object between two Activities in android?

Question

I want to pass a XMPPTCPConnection object with intent.putExtra(...); but unfortunately it didn't work with casting my object to Serialize or Parcelable like: signInIntent.putExtra("connection", (Serialize) conn); and reporting the error : "can not cast XMPPTCPConnection to Serialize or Parcelable." i see many similar questions and try to do like their answers. so i tried to add the object to a list and then pass that list. this is my first Activity :

Intent signInIntent = new Intent(LoginActivity.this, MainActivity.class);
ArrayList<XMPPTCPConnection> conn = new ArrayList<XMPPTCPConnection>();
conn.add(connection);
signInIntent.putExtra("connection",  conn);
startActivity(signInIntent);

and this is my second Activity :

Bundle getData = getIntent().getExtras(); 
List<XMPPTCPConnection> listConn = new ArrayList<>();
listConn = (List<XMPPTCPConnection>) getData.get("connection");
XMPPTCPConnection connection = listConn.get(0);

but this error reported :

12-27 18:48:42.919 30358-30358/finalproject.ffisher.com.finalproject E/AndroidRuntime: FATAL EXCEPTION: main
12-27 18:48:42.919 30358-30358/finalproject.ffisher.com.finalproject E/AndroidRuntime: Process: finalproject.ffisher.com.finalproject, PID: 30358
12-27 18:48:42.919 30358-30358/finalproject.ffisher.com.finalproject E/AndroidRuntime: java.lang.RuntimeException: Parcel: unable to marshal value org.jivesoftware.smack.tcp.XMPPTCPConnection@3f8f8920

am I wrong in this code ? is there any other way to pass data between activities ? please help me. Thank you.

Answer 1

I'd suggest to keep your XMPPTCPConnection object in in Application's extension, as it's accessible from any place within the app.

public class MyApplication extends Application {

    private XMPPTCPConnection connection;

    @Override
    public void onCreate() {
        super.onCreate();
    }

    public void initializeXMPPTCPConnection() {
        XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder()
            .setServiceName(SERVER_HOST)
            .setHost(SERVER_ADDRESS)
            .setPort(PORT)
            .setCompressionEnabled(false)
            .setResource("test")
            .setDebuggerEnabled(true)
            .setSecurityMode(ConnectionConfiguration.SecurityMode.disabled)
            .build();
        connection = new XMPPTCPConnection(config);
    }

    public XMPPTCPConnection getXMPPTCPConnection() {
        return connection;
    }
}

And in AndroidManifest add reference to it:

<application
    android:name=".MyApplication" />

Then you can call ((MyApplication)getApplication()).initializeXMPPTCPConnection(); or ((MyApplication)getApplication()).getXMPPTCPConnection(); from any activity you want