코드를 분석해봐도 null reference가 왜 생기는지 잘 모르겠습니다..
[에러 코드]
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.util.ArrayList.add(java.lang.Object)' on a null object reference
at com.mango.wellbeingdiary.main.health.log.HealthTodayLog.addSets(HealthTodayLog.java:101)
at com.mango.wellbeingdiary.main.health.log.HealthTodayLog.access$000(HealthTodayLog.java:31)
at com.mango.wellbeingdiary.main.health.log.HealthTodayLog$1.onAddItem(HealthTodayLog.java:87)
at com.mango.wellbeingdiary.main.adapter.RoutineViewHolder$1.onClick(RoutineViewHolder.java:49)
at android.view.View.performClick(View.java:7448)
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119)
at android.view.View.performClickInternal(View.java:7425)
at android.view.View.access$3600(View.java:810)
at android.view.View$PerformClick.run(View.java:28305)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
[RoutineViewHolder]
public class RoutineViewHolder extends RecyclerView.ViewHolder {
ArrayList<SetsList> list = new ArrayList<>();
public interface Listener {
void onAddItem(Routine routine);
}
private final TextView exerciseText;
private final Button addBtn;
private final RecyclerView setsRcv;
private final HealthSecondRecyclerViewAdapter adapter;
public RoutineViewHolder(@NonNull View itemView) {
super(itemView);
exerciseText = itemView.findViewById(R.id.exerciseTitle);
addBtn = itemView.findViewById(R.id.addSetBtn);
setsRcv = itemView.findViewById(R.id.healthFirstRecyclerView);
adapter = new HealthSecondRecyclerViewAdapter(list);
setsRcv.setAdapter(adapter);
}
public void bind(Routine routine, Listener listener) {
exerciseText.setText(routine.getExerciseText());
adapter.setItems(routine.getItemCount());
addBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
listener.onAddItem(routine);
}
});
}
}
[healthTodayLog]
public class HealthTodayLog extends AppCompatActivity {
Toolbar toolbar;
String fileName; // 선택된 날짜의 파일 이름
ArrayList<Routine> list = new ArrayList<>();
private HealthFirstRecyclerViewAdapter routineAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.health_today_log);
long now = System.currentTimeMillis();
Date date = new Date(now);
SimpleDateFormat dateFormat = new SimpleDateFormat("Y년 M월 d일");
String getTime = dateFormat.format(date);
/* 툴바 설정 */
toolbar = findViewById(R.id.todayLogToolbar);
setSupportActionBar(toolbar); // 툴바를 앱바로 지정.
ActionBar actionBar = getSupportActionBar(); // 툴바에 대한 참조 획득하기
actionBar.setTitle(getTime + " 운동기록");
// 캘린더 뷰를 클릭해서 들어왔으면 0번 로직
// 헬스 로그 등록을 클릭해서 들어왔으면 1번 로직.
Intent intent = getIntent();
int check = intent.getIntExtra("check", 999);
if(check == 0) {
int year = intent.getIntExtra("year", 2021);
int month = intent.getIntExtra("month", 1);
int day = intent.getIntExtra("day", 1);
actionBar.setTitle(year + "년 " + month + "월 " + day + "일 운동기록");
//readLog로 넘어감.
} else if(check == 1) {
int c = 1;
String s = intent.getStringExtra(String.valueOf(0));
while (s != null) {
/* 중복을 제거 하기 위해서 list에 s가 들어가 있는지 확인함. */
if(!list.contains(s)) {
Routine newRoutine = new Routine(s);
list.add(newRoutine);
}
s = intent.getStringExtra(String.valueOf(c++));
}
RecyclerView recyclerView = findViewById(R.id.todayLogRectyclerView);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(linearLayoutManager);
HealthFirstRecyclerViewAdapter adapter = new HealthFirstRecyclerViewAdapter(list);
adapter.setRoutineListener(new RoutineViewHolder.Listener() {
@Override
public void onAddItem(Routine routine) {
addSets(routine);
}
});
recyclerView.setAdapter(adapter);
}
//readLog(year, month, day);
/* 로그 등록하고 들어왔으면 아래 로직 */
//saveLog()
}
private void addSets(Routine routine) {
ArrayList<SetsList> setsLists = routine.getSetsItems();
setsLists.add(SetsList.newEmptySetsItem());
routineAdapter.updateRoutine(routine);
}
[Routine.class]
public class Routine {
private String listText;
private Button button;
private ArrayList<SetsList> setsList;
// 초기화를 위한 생성자
public <E> Routine(String equipmentName, ArrayList<E> es) {
listText = equipmentName;
setsList = (ArrayList<SetsList>) es;
}
// 루틴이 추가 될 때 하위 어댑터를 받기 위해서 ArrayList가 필요함.
public static Routine newEmptyRoutine(String equipmentName) {
return new Routine(equipmentName, new ArrayList<>());
}
public Routine(String text) { this.listText = text; }
public Routine(Button button) { this.button = button; }
public String getExerciseText() { return listText;}
public Button getBtn() { return button; }
public ArrayList<SetsList> getItemCount() { return setsList; }
public ArrayList<SetsList> getSetsItems() { return setsList; }
}
