Display random string from Array stored in values/ with Kotlin?

Question

I searched for a way to display in my TextView a random string from my array list stored in Values/Rarity.xml.

There are many examples here all in Java, but none are working.

I tried: kotlin Get random string from array (can't make it work with an array from my values/rarity.xml)

I am new to Android studio and would like to know how to make it work, has I've been trying for the past few hours without success.

This is what I would like to achieve, but the app crash when I click on the button :

package com.example.myapplication

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)

        val rarity = arrayOf(R.array.wp_rarity)
        val randomRarity = rarity.random()

        btn_generate.setOnClickListener {
            item_type.setText(randomRarity)
        }
    }
}

If I replace the val rarity = arrayOf(R.array.wp_rarity) by val rarity = arrayOf("test", "test2") it does work but I would like to use my arrays in values/*.xml in order to optimize it. Or is there another way ?

Regards,

Công Hải · Answer 1 · 2020-06-08T00:20:03.700

0

You should use getStringArray instead of arrayOf. It is method of collections. Try this

val rarity = resources.getStringArray(R.array.wp_rarity)

edited Jun 08 '20 at 00:20

answered Jun 08 '20 at 00:09

Công Hải

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I used getStringArray however it's highlighted in RED and doesn't seem to work. – Daniel Morena Jun 08 '20 at 00:14
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Try to getResouce().getStringArray instead – Công Hải Jun 08 '20 at 00:18
Thanks, that was the answer ! To be more specific it was : `resources.getStringArray(R.array.wp_rarity)` Thank you very much ! – Daniel Morena Jun 08 '20 at 00:21

score 0 · Answer 2 · answered Jun 08 '20 at 00:24

0

The answer was given by Cong Hai in the comments of his post.

It was :

val rarity = resources.getStringArray(R.array.wp_rarity)

Many thanks to him !

answered Jun 08 '20 at 00:24

Daniel Morena

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Display random string from Array stored in values/ with Kotlin?

2 Answers2