android kotlin - Get string resource by name

MainActivity.kt


package com.example.jetpack

import android.content.Context
import android.content.res.Resources
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*


class MainActivity : AppCompatActivity() {

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

        // get string from resources by resource name and show it
        textView.text = applicationContext
            .stringFromResourcesByName("developer")
    }
}


// extension function to get a string resource by resource name
fun Context.stringFromResourcesByName(resourceName: String): String? {
    return try {
        // get the string resource id by name
        val resourceId = resources.getIdentifier(
            resourceName,
            "string",
            packageName
        )

        // return the string value
        getString(resourceId)
    }catch (e:Resources.NotFoundException){
        null
    }
}

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:id="@+id/constraintLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#EDEAE0"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif-condensed"
        android:gravity="center"
        android:padding="32dp"
        android:textColor="#0014A8"
        android:textSize="35sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="TextView" />

</androidx.constraintlayout.widget.ConstraintLayout>

res/values/strings.xml


<resources>
    <string name="app_name">Kotlin - Get string resource by name</string>
    <string name="developer">Saiful Alam, Khulna, Bangladesh</string>
</resources>