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2024 11 19
실습 5
skdud0629
reviewed
Feb 4, 2025
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| fun submitList(list: List<Word>) { | ||
| wordList = list | ||
| notifyDataSetChanged() |
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DiffUtil도 나중에 사용해보시면 좋을 것 같아요! 변경된 부분만 갱신할 수 있어 더 효율적입니당
| private var wordList: List<Word> = emptyList() | ||
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| fun addWord(word: Word) { | ||
| val updatedList = wordList.toMutableList() |
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MutableList로 변경해준 이유가 뭘까용?
불변성을 유지하기 위해 List 형태 그대로 두는 게 좋아보여용
| super.onCreate(savedInstanceState) | ||
| setContentView(R.layout.activity_main) | ||
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| recyclerView = findViewById(R.id.recyclerView) |
| deleteButton.setOnClickListener { | ||
| if(selectedWord != null) { | ||
| Log.d("Test", selectedWord!!.word + " : " + selectedWord!!.definition) | ||
| wordViewModel.removeWord(selectedWord!!) |
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!! 연산자는 쓰지 말아주세요. null값이 들어오게 되면 앱이 크래시될 수 있습니다
null일때 예외 처리를 해주세요
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2025 02 03
MVVM을 사용하여 만들어보려 하였는데, 잘 안된것 같음.
모델/뷰/뷰모델(AndroidViewModel이 viewmodel에 전역변수 사용할 수 있는 거라고 나와있길래 사용했음.)로 나누어서 코딩하긴 했는데, DataBinding을 못 사용했음.
뷰 모델에서 liveData를 사용해보려 하였지만 에러가 나서 일단 제거하고 일일히 업데이트 하는 식으로 구현함.