我收到一個(gè)錯(cuò)誤：java.lang.IndexOutOfBoundsException：索引：0，大?。?我遇到錯(cuò)誤的部分在我的 if 語句中onBindViewHolder，下面是我的適配器：public class UserProgramWeekAdapter extends RecyclerView.Adapter<UserProgramWeekAdapter.ViewHolder>{ private Context context; private ArrayList<ProgramTrackerWrapper> programTrackers; public UserProgramWeekAdapter(Context context, ArrayList<ProgramTrackerWrapper> programTrackers) { this.context = context; this.programTrackers = programTrackers; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.activity_user_program_week_adapter, parent, false); ViewHolder viewHolder = new ViewHolder(view); return viewHolder; } @Override public void onBindViewHolder(UserProgramWeekAdapter.ViewHolder holder, int position) { holder.dayTxt.setText(programTrackers.get(position).getDay()); holder.numberofExercises.setText(programTrackers.get(position).getProgramTrackers().size()+ " exercises"); boolean isFinished = false; for (int i = 0; i < programTrackers.size(); i++){ if ( programTrackers.get(position).getProgramTrackers().get(i).isProgramExerciseFinished()){ isFinished = true; } } String statusTxt = isFinished || programTrackers.size() == 0 ? "Completed" : "Not Completed"; holder.exerciseCompleted.setText(statusTxt); } @Override public int getItemCount() { return programTrackers.size(); } public class ViewHolder extends RecyclerView.ViewHolder { TextView dayTxt, exerciseCompleted, numberofExercises; public ViewHolder(View itemView) { super(itemView); dayTxt = itemView.findViewById(R.id.dayTxt); exerciseCompleted = itemView.findViewById(R.id.exerciseCompleted); numberofExercises = itemView.findViewById(R.id.numberofExercises); } }}
1 回答
暮色呼如
TA貢獻(xiàn)1853條經(jīng)驗(yàn) 獲得超9個(gè)贊
這看起來很可疑：
for (int i = 0; i < programTrackers.size(); i++){
if ( programTrackers.get(position).getProgramTrackers().get(i).isProgramExerciseFinished()){
isFinished = true;
}
}
您檢查programTrackers列表的大小，但不檢查其子列表，因此i很容易指向不正確的索引：
final int sublistSize = programTrackers.get(position).getProgramTrackers().size();
for (int i = 0; i < sublistSize; i++){
if (programTrackers.get(position).getProgramTrackers().get(i).isProgramExerciseFinished()){
isFinished = true;
}
}
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