android kotlin - String padStart and padEnd example

MainActivity.kt

package com.cfsuman.kotlintutorials

import android.os.Bundle
import android.text.method.ScrollingMovementMethod
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity


class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // get the widgets reference from XML layout
        val textView = findViewById<TextView>(R.id.textView)

        // make textview content scrollable
        textView.movementMethod = ScrollingMovementMethod()


        val string = "Lorem Ipsum is simply dummy text of the" +
                " printing and typesetting industry."

        textView.text = string

        // string is returned as is, when its
        // length is greater than the specified
        val afterPadStart10 = string.padStart(10,'*')
        textView.append("\n\nAfter pad start 10....\n")
        textView.append(afterPadStart10)

        val afterPadStart100 = string.padStart(100,'*')
        textView.append("\n\nAfter pad start 100....\n")
        textView.append(afterPadStart100)

        /*
            source: kotlinlang.org
            Returns a char sequence with content of this char sequence
            padded at the end to the specified length with
            the specified character or space.
         */
        val afterPadEnd = string.padEnd(
            string.length+5, // length - the desired string length.
            '*' // padChar - the character to pad string with
        )
        textView.append("\n\nAfter pad end length + 5....\n")
        textView.append(afterPadEnd)
    }
}
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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:background="#F8F8F8"
    android:padding="24dp">

    <TextView
        android:id="@+id/textView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:fontFamily="sans-serif"
        android:textSize="24sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>
More android examples