RecyclerView点击监听器未在行点击时触发

Question

我有一个回收站视图，其中显示了人员列表。我需要能够单击列表中的人员之一，并打开一个新活动。

在我的适配器中，我有以下代码：

private OnMentorClickListener listener;

public interface OnMentorClickListener {
        void onMentorClick(Mentor mentor);
    }

public void setOnMentorClickListener(OnMentorClickListener listener){
        this.listener = listener;
    }

在我的活动中，我有以下代码：

mentorAdapter.setOnMentorClickListener(new MentorAdapter.OnMentorClickListener(){
            @Override
            public void onMentorClick(Mentor mentor) {
                Intent intent = new Intent(MentorActivity.this, MentorAddEditActivity.class);

                intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_ID, mentor.getMentor_id());
                intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_NAME, mentor.getMentor_name());
                intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_PHONE, mentor.getMentor_phone());
                intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_EMAIL, mentor.getMentor_email());

                startActivityForResult(intent, EDIT_MENTOR_REQUEST);
            }
        });

我已经以完全相同的方式为我的应用程序的其他部分实现了侦听器，它们都可以正常工作。我已经搜索了代码，并且此设置似乎与代码的其他部分相同。

我没有任何错误，但是当我进入“导师”页面并列出所有导师时，单击任何都没有任何反应。没有错误，没有崩溃，什么都没有。

我还试图将OnMentorClickListener海峡实现为Activity类，如下所示：

public class MentorActivity extends AppCompatActivity implements MentorAdapter.OnMentorClickListener

以及在OnCreate之外覆盖：

@Override
    public void onMentorClick(Mentor mentor) {
        Intent intent = new Intent(MentorActivity.this, MentorAddEditActivity.class);

        intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_ID, mentor.getMentor_id());
        intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_NAME, mentor.getMentor_name());
        intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_PHONE, mentor.getMentor_phone());
        intent.putExtra(MentorAddEditActivity.EXTRA_MENTOR_EMAIL, mentor.getMentor_email());

        startActivityForResult(intent, EDIT_MENTOR_REQUEST);
    }

这也不起作用。

关于我的想法，我实际上无法在RecyclerView中单击指导者？

整个MentorAdapter进行说明。这与我的所有其他适配器（为Mentor更改了变量名）尽可能相同。

public class MentorAdapter extends RecyclerView.Adapter<MentorAdapter.MentorHolder> {
    private static final String TAG = AppRepository.class.getSimpleName();

    private OnMentorClickListener listener;


    private List<Mentor> mentorList = new ArrayList<>();


    class MentorHolder extends RecyclerView.ViewHolder{
        private TextView textViewMentorName;
        private TextView textViewMentorPhone;
        private TextView textViewMentorEmail;


        MentorHolder(@NonNull View itemView) {
            super(itemView);
            textViewMentorName = itemView.findViewById(R.id.textView_mentor_name);
            textViewMentorPhone = itemView.findViewById(R.id.textView_mentor_phone);
            textViewMentorEmail = itemView.findViewById(R.id.textView_mentor_email);

            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int position = getAdapterPosition();
                    if(listener!=null&&position!=RecyclerView.NO_POSITION){
                        listener.onMentorClick(mentorList.get(position));
                    }
                }
            });
        }
    }

    @NonNull
    @Override
    public MentorHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.mentor_item, parent, false);
        return new MentorHolder(itemView);
    }

    @Override
    public void onBindViewHolder(@NonNull MentorHolder holder, int position) {
        Mentor currentMentor = mentorList.get(position);
        holder.textViewMentorName.setText(currentMentor.getMentor_name());
        holder.textViewMentorEmail.setText(currentMentor.getMentor_email());
        holder.textViewMentorPhone.setText(currentMentor.getMentor_phone());

    }

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

    public void setMentorList(List<Mentor> mentors){
        this.mentorList = mentors;
        notifyDataSetChanged();
    }

    public Mentor getMentorAt(int position){return mentorList.get(position);}

    public interface OnMentorClickListener {
        void onMentorClick(Mentor mentor);
    }

    public void setOnMentorClickListener(OnMentorClickListener listener){
        this.listener = listener;
    }


}

Answer 1

如果要覆盖onMentorClick，则您的活动应实现OnMentorClickListener接口，然后在适配器上，您应使用以下命令将活动设置为侦听器：

mentorAdapter.setOnMentorClickListener(this)

在您的代码中，您使用的是新的点击侦听器（不是活动）

mentorAdapter.setOnMentorClickListener(new MentorAdapter.OnMentorClickListener(){
            @Override
            public void onMentorClick(Mentor mentor) {

            }

});

此外，您应该在适配器实现中的用户单击上触发onMentorClick，最好是在onCreateViewHolder方法中：

public YourAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent,
                                               int viewType) {

    ViewHolder holder = ViewHolder(
        LayoutInflater.from(context).inflate(
            R.layout.your_layout,
            parent,
            false
        ))

    holder.itemView.setOnClickListener {
        listener.onMentorClick(mentor)
    }

    return holder ;
}

Answer 2

在某些地方，您需要调用这些回调，如下所示：

profileView.setOnClickListener(new ....
     listener.onMentorListener(mentor);
)

您的适配器中有此实现吗？