Simple android:animateLayoutChanges="true" example

activity_animated.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="wrap_content"
    android:layout_height="wrap_content"
    android:animateLayoutChanges="true"
    android:layout_gravity="center"
    android:orientation="horizontal"
    android:id="@+id/linear"
    android:background="@color/colorAccent"
    tools:context=".AnimatedLinearLayout">

    <ImageView
        android:layout_margin="8dp"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:src="@mipmap/ic_launcher"/>

    <TextView
        android:layout_margin="16dp"
        android:id="@+id/tvText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="some text"
        android:textAppearance="?android:attr/textAppearanceLarge"/>

</LinearLayout>

AnimatedLinearLayout.java

package com.example.nakamoto.fishtool;

import android.animation.LayoutTransition;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

public class AnimatedLinearLayout extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_animated);

        LinearLayout linear = findViewById(R.id.linear);
        linear.getLayoutTransition().enableTransitionType(LayoutTransition.CHANGING);

        final TextView tv = (TextView) findViewById(R.id.tvText);
        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                
                if (tv.getText().toString() == "some text"){
                    tv.setText("some large text");
                } else {
                    tv.setText("some text");
                }
            }
        });
    }
}

Source: https://proandroiddev.com/the-little-secret-of-android-animatelayoutchanges-e4caab2fddec