How do I print Kotlin Class properties to Logcat in Android Studio? [closed]

Question

I am writing a simple program to describe the attributes of my favorite song, namely: artistName, songTitle, releaseDate, etc. I have created a class 'FavoriteSong' and added some properties to represent these attributes. When I run the code, I would like the class properties to be printed to Logcat. How can I achieve this?

package com.example.song

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import java.time.LocalDate
import java.time.Month

class MainActivity : AppCompatActivity() {

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

        // Favorite Song
        class FavoriteSong {
            val artistName: String = "Wale" 
            val songTitle: String = "My World" 
            val releaseDate = LocalDate.of(2020, Month.JANUARY, 1)
            val songDuration: Float = 3.50f 
            val genre: String = "Reggae" 
        }
        
        // Why won't this Log.d() statement work?
        Log.d(FavoriteSong)
    }
}

Answer 1

I'm not well-versed in Android anymore (and more specifically I don't recall Log.d()'s signature), but I see several potential problems here:

• FavoriteSong is a class, not an object. You need to create an instance of it by calling the constructor: FavoriteSong() (note the parentheses immediately after the class name)
• if Log.d() needs a string, you probably need to call .toString() on your FavoriteSong instance. If it accepts Any, you should be ok as it will most likely call toString() under the hood
• your current definition of FavoriteSong does not override Any's toString() method. You need to either declare an override fun toString(): String = ... yourself, or make this class a data class so that it generates one for you automatically