Spinner의 onItemSelectedListener에 AdapterView.OnitemSelectedListener 람다식을 대입하는 방법은 Object 객체를 만들어서 onItemSelected, onNothingSelected 을 오버라이딩하면 됩니다. spinner1.onItemSelectedListener = object : AdapterView.OnItemSelectedListener{ override fun onItemSelected( parent: AdapterView?, view: View?, position: Int, id: Long ) { ivPoster.setImageResource(posterID[position]) } override fun onNothingSelected(p..

[Gradle 설정] 1 id 'kotlin-android-extensions' cs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 package com.cookandroid.project11_2 import android.annotation.SuppressLint import android.content.Context import androidx.appcom..

[Gradle 설정] 1 id 'kotlin-android-extensions' cs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 package com.cookandroid.project11_1 import android.content.Context import androidx.appcompat.app.AppCompatActivit..