kotlin android studio Unable to figure out how to covert that text to double. Can somebody correct the code please?

Issue

kotlin android studio Unable to figure out how to covert that text to double. Can somebody correct the code please?

that code gives an error -

Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: 
public inline fun String.toDouble(): Double defined in kotlin.text
  package com.example.termoparacalculator

---

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import 
com.example.termoparacalculator.databinding.ActivityMainBinding 

class MainActivity : AppCompatActivity() {

private  lateinit var  binding: ActivityMainBinding

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    binding = ActivityMainBinding.inflate(layoutInflater)
    setContentView(binding.root)

    binding.button.setOnClickListener{
        val inp = binding.input.text.toDouble()
        val temp = 2.0609 * inp + 25.748
        binding.textView2.text = temp
    }

    }
}

Solution

Assuming input is an EditText you need to do toString first

binding.input.text.toString().toDouble()

then make temp a string too when setting since its a double

binding.textView2.text = temp.toString()

Answered By - tyczj