Mercury-IM/app/src/main/java/org/mercury_im/messenger/ui/chat/ChatActivity.java

package org.mercury_im.messenger.ui.chat;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;

import org.mercury_im.messenger.R;

public class ChatActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_chat);
        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .replace(R.id.container, ChatInputFragment.newInstance())
                    .commitNow();
        }
    }
}