TextSwitcher

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context="com.example.application.textswitcherapp.MainActivity">

    <TextSwitcher
        android:id="@+id/textSwitcher"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="80dp"
        android:inAnimation="@android:anim/slide_in_left"
        android:outAnimation="@android:anim/slide_out_right" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="next" />

</RelativeLayout>

package com.example.application.textswitcherapp;

import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher;

public class MainActivity extends AppCompatActivity {
    private TextSwitcher textSwitcher;
    private Button nextButton;
    private int stringIndex = 0;
    private String[] row = {"ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX"};
    private TextView textView;

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

        textSwitcher = findViewById(R.id.textSwitcher);
        nextButton = findViewById(R.id.button);
        nextButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (stringIndex == row.length - 1) {
                    stringIndex = 0;
                    textSwitcher.setText(row[stringIndex]);
                } else {
                    textSwitcher.setText(row[++stringIndex]);
                }
            }
        });

        textSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
            @Override
            public View makeView() {
                textView = new TextView(MainActivity.this);
                textView.setTextColor(Color.BLACK);
                textView.setTextSize(60);
                textView.setGravity(Gravity.CENTER_HORIZONTAL);
                return textView;
            }
        });

        textSwitcher.setText(row[stringIndex]);
    }
}