How to enable Default Layout Animations in Android?

This Activity shows a simple layout animation. Here we add a new Button to the layout with “APPEARING” animation.

You can have a variety of Default animations.

Activity

package com.coderzheaven.animationdemo1;

import android.animation.LayoutTransition;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    private ViewGroup viewGroup;

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

        LayoutTransition l = new LayoutTransition();
        l.enableTransitionType(LayoutTransition.APPEARING);
        viewGroup = (ViewGroup) findViewById(R.id.activity_main);
        viewGroup.setLayoutTransition(l);

    }

    public void onClick(View view) {
        viewGroup.addView(new Button(this));
    }
}

The layout.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:onClick="onClick"
    android:orientation="vertical"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.coderzheaven.animationdemo1.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />
</LinearLayout>

All Done.
Please send your comments to coderzheaven@gmail.com.