如何使用同一适配器在回收者视图上显示多个模型？

我有两种不同类型的对象（例如：用户和学生），它们都具有不同的属性。

用户： 标题描述;
学生： 标题、描述、USN；

有没有一种方法可以使用相同的适配器首先在回收器视图上显示两个用户，然后显示学生？即使它是两个适配器，我如何显示它。我不想要两个回收者视图。

请注意，给出的示例非常简单。变化不仅仅体现在用户界面上。如果更改仅在 UI 中，则可以使用 getItemViewType()，但这里更改是在模型本身中。

List<Student> and List<User>

我们如何将两个列表设置为同一个适配器？

您必须使用重写方法“getItemViewType(position)”。

然后只需按照这样的 ViewType 返回 ViewHolder，

  @Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    RecyclerView.ViewHolder viewHolder = null;
    LayoutInflater inflater = LayoutInflater.from(parent.getContext());

    switch (viewType) {
        case ITEM:
            View v1 = inflater.inflate(R.layout.item_student, parent, false);
            viewHolder = new UserVH(v1);
            break;
        case LOADING:
            View v2 = inflater.inflate(R.layout.item_user, parent, false);
            viewHolder = new StudentVH(v2);
            break;
    }
    return viewHolder;
}

Edit:

 public class StudentVH extends RecyclerView.ViewHolder {
    //Declare student views

    public ViewHolder(View v) {
        super(v);
        //Inialize student views
    }
}

 public class UserVH extends RecyclerView.ViewHolder {
    //Declare user views

    public ViewHolder(View v) {
        super(v);
        //Inialize user views
    }
}

第二次编辑：

你的适配器应该是这样的，

public class ClGAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private List<UserBean> userBeans;
private List<StudentBean> studentBeans;
private UserBean userBeanItem;
private StudentBean studentBeanItem;
private int size = 0;


public ClGAdapter(Context context, List<UserBean> userBeans, List<StudentBean> studentBeans) {
    this.context = context;
    this.userBeans = userBeans;
    this.studentBeans = studentBeans;
    this.size = userBeans.size() + studentBeans.size();
}


@Override
public int getItemViewType(int position) {

    if (position > (userBeans.size() - 1)) {
        return 2;//TYPE_STUDENT
    } else {
        return 1; //TYPE_USER
    }
}

@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {

    int viewType = holder.getItemViewType();

    userBeanItem = userBeans.get(position);
    studentBeanItem = studentBeans.get(position);
    switch (viewType) {
        case 1:
            ((UserHolder) holder).mUserName.setText(userBeanItem.getUserName());
            break;
        case 2:
            ((StudentHolder) holder).mStudentName.setText(studentBeanItem.getStudentName());
            break;
        default:
            break;
    }

}

@Override
public int getItemCount() {
    return size;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    int layout = 0;
    RecyclerView.ViewHolder viewHolder;
    switch (viewType) {
        case 1: 
            layout = R.layout.user_card;
            View userView = LayoutInflater.from(parent.getContext()).inflate(layout, parent, false);
            viewHolder = new UserHolder(userView);
            break;
        case 2:
            layout = R.layout.student_card;
            View studentView = LayoutInflater.from(parent.getContext()).inflate(layout, parent, false);
            viewHolder = new StudentHolder(studentView);

            break;
        default:
            viewHolder = null;
            break;
    }
    return viewHolder;
}

public class UserHolder extends RecyclerView.ViewHolder {
    private TextView mUserName;

    public UserHolder(View v) {
        super(v);
        mUserName = v.findViewById(R.id.user_name);
    }
}

public class StudentHolder extends RecyclerView.ViewHolder {
    private TextView mStudentName;

    public StudentHolder(View v) {
        super(v);
        mStudentName = v.findViewById(R.id.student_name);
    }
}
}