how to prevent edit text from shrinking when keyboard opens?

I am a beginner in Android, I am trying to make a simple app where text in the edit text gets added to recycler view, but as soon as the Keyboard opens, edit text shrinks and content inside it is not visible

This is activty_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<LinearLayout
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp" >
<EditText
android:hint="ADD ITEMS"
android:layout_margin="10dp"
android:id="@+id/etItems"
android:textSize="24sp"
android:textColor="@android:color/black"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3" />
<Button
android:layout_margin="10dp"
android:id="@+id/btnAdd"
android:text="ADD"
android:layout_weight="1"
android:autoSizeTextType="uniform"
android:layout_width="0dp"
android:layout_height="match_parent" />
</LinearLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rvItems"
android:layout_margin="10dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="6" />
</LinearLayout>

This is MainActivity.Java

package com.example.todolist_09082020;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
ArrayList<String> items;
Button btnAdd;
EditText etItems;
RecyclerView rvItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnAdd = findViewById(R.id.btnAdd);
etItems = findViewById(R.id.etItems);
rvItems = findViewById(R.id.rvItems);
items = new ArrayList<>();
final ItemAdapter adapter = new ItemAdapter(items);
rvItems.setLayoutManager(new LinearLayoutManager(this));
rvItems.setAdapter(adapter);
btnAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String text = etItems.getText().toString();
if(!text.equals("")){
items.add(text);
adapter.notifyDataSetChanged();
}
etItems.setText("");
}
});
}
}

I tried solutions from other posts related to this, but this could not be solved.

edit text shrinked

Change layout_height of EditText and its parent LinearLayout to wrap_content. It should solve your issue

Your problem is the linear layout holding the text and button height. There's several things you can do, but a minimal way to keep it from collapsing is to change

android:layout_height="0dp"

to

android:layout_height="wrap_content"

You'll probably also see nicer results if you additionally change the text and button heights to wrap_content and choose a fixed font size (24sp looked nice) for your button text.