[김영찬_Android] 10주차 과제 제출 #71
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KYM-P
approved these changes
Jul 3, 2025
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| private fun showMusicList() { | ||
| lifecycleScope.launch { | ||
| val musicList = withContext(Dispatchers.IO) { |
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데이터베이스 작업을 다른 스레드에서 실행하는 것 매우 좋습니다!
여기서 나중에 배울 progressbar 에 대해 설명하자면 musicList 를 불러오는 동안 사용자 UI 에는 단지 빈 화면에서 갑자기 리스트가 생기기 때문에 해당 작업을 하는 도중에는 main 스레드에서 로딩 화면을 보여주는게 일반적입니다. 나중에 배우실 때 이 부분을 기억하시면 좋을 것 같습니다.
| while (it.moveToNext()) { | ||
| val id = it.getLong(idIndex) | ||
| val title = it.getString(titleIndex) ?: "제목없음" | ||
| val artist = it.getString(artistIndex) ?: "가수없음" |
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이런 제목없음, 가수없음 도 사용자에게 보여주는 메시지로 strings.xml 로 빼는게 좋을 것 같습니다.
| private val musicUpdateReceiver = object : BroadcastReceiver() { | ||
| override fun onReceive(context: Context?, intent: Intent?) { | ||
| val title = intent?.getStringExtra(MusicPlayerService.SONG_TITLE) ?: return | ||
| Log.d("MainActivity", "Music update received: $title") |
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만약 진짜로 log 를 사용하신다면 KEY 값도 Constant 로 만드시는게 좋지만 여기서는 단순 작동을 확인하기 위한 임시코드라고 생각하여 리뷰에서는 제외하겠습니다.
| android:id="@+id/tv_title" | ||
| android:layout_width="0dp" | ||
| android:layout_height="wrap_content" | ||
| android:text="제목" |
| android:id="@+id/tv_artist" | ||
| android:layout_width="0dp" | ||
| android:layout_height="wrap_content" | ||
| android:text="가수" |
| */ | ||
| ) | ||
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| @Composable |
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ui/theme에 Color, Theme, Type 은 Compose 연습용인건가요?
같이 들어와버렸네요
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