Question

我正在尝试制作锻炼日志应用程序。我设计了添加新的锻炼方法，如下图所示：

在AddWorkoutActivity中，有一个带有ExercisesListAdapter的练习的recyclerview。在此recyclerview中，是另一个带有SetsListAdapter的集合（编号，重量，次数）的recyclerview。

我想做的是当用户单击“保存”按钮时收集数据。我遇到的问题是，我不知道如何从ExercisesListAdapter类调用SetsListAdapter。

NewWorkoutActivity：

public class NewWorkoutActivity extends AppCompatActivity {

List<ExerciseItem> exercises;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_new);

    final ExercisesListAdapter exercisesListAdapter = new ExercisesListAdapter(this);
    exercisesRecyclerView.setAdapter(exercisesListAdapter);
    exercisesRecyclerView.setLayoutManager(new LinearLayoutManager(this));

    addExerciseButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            List<ExerciseSetItem> esi = new ArrayList<>();
            exercisesListAdapter.addExercise(new ExerciseItem("New Exercise", esi));
        }
    });
}

ExercisesListAdapter：

public class ExercisesListAdapter extends RecyclerView.Adapter<ExercisesListAdapter.exerciseViewHolder> {

class exerciseViewHolder extends RecyclerView.ViewHolder {
    private final TextView exerciseTextView;
    private final RecyclerView setsRecyclerView;
    private final Button addSetButton;

    private exerciseViewHolder(View view) {
        super(view);
        exerciseTextView = view.findViewById(R.id.exercise_name_text_view);
        setsRecyclerView = view.findViewById(R.id.sets_recycler_view);
        addSetButton = view.findViewById(R.id.add_set_button);
    }
}

private final LayoutInflater mInflater;
private List<ExerciseItem> mExercises;

ExercisesListAdapter(Context context) {
    mInflater = LayoutInflater.from(context);
}

@NonNull
@Override
public exerciseViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View itemView = mInflater.inflate(R.layout.recyclerview_exercise_item, viewGroup, false);
    return new exerciseViewHolder(itemView);
}

@Override
public void onBindViewHolder(@NonNull final exerciseViewHolder exerciseViewHolder, int i) {

    // Attach sets to recycler view
    final SetsListAdapter exerciseSetsAdapter =
            new SetsListAdapter(exerciseViewHolder.addSetButton.getContext());

    exerciseViewHolder.setsRecyclerView.setAdapter(exerciseSetsAdapter);
    exerciseViewHolder.setsRecyclerView.setLayoutManager(
            new LinearLayoutManager(exerciseViewHolder.addSetButton.getContext()));


    if(mExercises != null) {
        ExerciseItem exercise = mExercises.get(i);
        exerciseViewHolder.exerciseTextView.setText(exercise.name);
    }

    exerciseViewHolder.addSetButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            mExercises.get(exerciseViewHolder.getAdapterPosition()).sets.
                    add(new ExerciseSetItem(0,0));
            exerciseSetsAdapter.setSets(mExercises.
                    get(exerciseViewHolder.getAdapterPosition()).sets);
        }
    });
}

@Override
public int getItemCount() {
    if(mExercises != null)
        return mExercises.size();
    else return 0;
}

public void setExercises(List<ExerciseItem> exercises) {
    mExercises = exercises;
    this.notifyDataSetChanged();
}

SetListAdapter：

public class SetsListAdapter extends RecyclerView.Adapter<SetsListAdapter.exerciseSetViewHolder>  {

class exerciseSetViewHolder extends RecyclerView.ViewHolder {
    private final TextView setTextView;
    private final EditText weightEditText;
    private final EditText repsEditText;

    private exerciseSetViewHolder(View itemView) {
        super(itemView);
        setTextView = itemView.findViewById(R.id.new_set_text_view);
        weightEditText = itemView.findViewById(R.id.new_set_weight_edit_text);
        repsEditText = itemView.findViewById(R.id.new_set_reps_edit_text);
    }
}

private final LayoutInflater mInflater;
private List<ExerciseSetItem> mSets;

SetsListAdapter(Context context) {
    mInflater = LayoutInflater.from(context);
}

@NonNull
@Override
public exerciseSetViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View itemView = mInflater.inflate(R.layout.recyclerview_set_item, viewGroup, false);
    return new exerciseSetViewHolder(itemView);
}

@Override
public void onBindViewHolder(@NonNull exerciseSetViewHolder workoutViewHolder, int i) {

    if(mSets!= null) {
        ExerciseSetItem item = mSets.get(i);
        workoutViewHolder.setTextView.setText(String.valueOf(i));
        workoutViewHolder.weightEditText.setText(String.valueOf(item.weight));
        workoutViewHolder.repsEditText.setText(String.valueOf(item.reps));
    }
}

@Override
public int getItemCount() {
    if(mSets != null)
        return mSets.size();
    else {
        return 0;
    }
}

public void setSets(List<ExerciseSetItem> sets) {
    mSets = sets;
    notifyDataSetChanged();
}

public List<ExerciseSetItem> getSets() {
    return mSets;
}

我本来想收集列表中的每个适配器，但对我来说似乎并不好。

调用嵌套的recyclerview适配器以获取数据

0 个答案: