如何在每个项目上设置OnClickListener？

Question

我是这方面的新手。我希望这个代码做的是：每当用户点击项目（例如：like或dislike）时，我希望我的firebase发生一些事情（例如，将like的值设置为1）。我正在努力为每个项目（喜欢，不喜欢，快乐，报告）设置一个点击监听器，但我不知道怎么做。即使我在静态类内部设置了click侦听器，也不能调用我的数据库引用。我还尝试了commentsactivity.this.mreviewsdatabase.等，但都不起作用，因为它不想要一个静态类。如果我从类中移除静态，应用程序就会崩溃。

你会怎么做？代码应该是什么，以使其工作？

提前谢谢大家，祝大家有个愉快的一天。

'''公共类CommentsActivity扩展AppCompatActivity{

private RecyclerView mCommentList;
public DatabaseReference mReviewsDatabase;

private FirebaseUser mCurrentUser;

private ImageView happyEmote, thumpUp, thumbDown ,reportReview;

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

    String title = getIntent().getStringExtra("EXTRA_SESSION_ID");

    mCurrentUser = FirebaseAuth.getInstance().getCurrentUser();


    mReviewsDatabase = FirebaseDatabase.getInstance().getReference().child("Film_reviews").child(title);

    mCommentList = (RecyclerView)findViewById(R.id.reviews_list);
    mCommentList.setHasFixedSize(true);
    mCommentList.setLayoutManager(new LinearLayoutManager(this));

    FirebaseRecyclerAdapter<AllCommClass, CommentsActivity.ReviewsViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<AllCommClass, CommentsActivity.ReviewsViewHolder>(
            AllCommClass.class,
            R.layout.comment_single_layout,
            CommentsActivity.ReviewsViewHolder.class,
            mReviewsDatabase
    ) {
        @Override
        protected void populateViewHolder(CommentsActivity.ReviewsViewHolder reviewsViewHolder, AllCommClass allCommClass, int i) {
            reviewsViewHolder.setUsername(allCommClass.getUsername());
            reviewsViewHolder.setReview(allCommClass.getReview());
            reviewsViewHolder.setVoto(allCommClass.getVoto());

            reviewsViewHolder.setReport();
            reviewsViewHolder.setLike();
            reviewsViewHolder.setDislike();
            reviewsViewHolder.setHappyEmote();

            reviewsViewHolder.mView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {                    }
            });
        }
    };
    mCommentList.setAdapter(firebaseRecyclerAdapter);

}





public static class ReviewsViewHolder extends RecyclerView.ViewHolder {
    View mView;
    public ReviewsViewHolder(@NonNull View itemView) {
        super(itemView);
        mView = itemView;

    }
    public void setReport() {
        ImageView reportReview = mView.findViewById(R.id.reportReview);
        reportReview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.v("Tag","You've reported the comment number "+getAdapterPosition());
            }
        });
    }

    public void setLike() {
        ImageView thumpUp = mView.findViewById(R.id.thumbUp);
        thumpUp.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.v("Tag","You've liked the comment number "+getAdapterPosition());
            }
        });
    }

    public void setDislike() {
        ImageView thumpDown = mView.findViewById(R.id.thumbDown);
        thumpDown.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.v("Tag","You've disliked the comment number "+getAdapterPosition());
            }
        });
    }

    public void setHappyEmote() {
        ImageView happyEmote = mView.findViewById(R.id.happyEmote);
        happyEmote.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.v("Tag","You've added a reaction to the comment number "+getAdapterPosition());
            }
        });
    }

    public void setUsername(String username){
        TextView titleView = mView.findViewById(R.id.user_single_username_comment_section);
        titleView.setText(username);
    }
    public void setReview(String review){
        TextView titleView = mView.findViewById(R.id.user_single_review);
        titleView.setText(review);
    }

    public void setVoto(int voto){
        TextView titleView = mView.findViewById(R.id.user_single_rating);
        titleView.setText(String.valueOf(voto));
    }
}}

“

Answer 1

作为一个初学者，基本上有两种方法可以将click listener设置为一个回收器视图项。

1. 第一种是简单但不是最佳的方法。在adapter类的OnBindViewWholder中，为Holder.ItemView
设置onClickListener
2. 第二种方法是使用onClickInterface，然后从调用/主activity调用它。如果您需要任何进一步的指导，请告诉我