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安卓RecyclerView GridLayoutManager onClick无法正常工作
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Stack Overflow用户
提问于 2016-11-14 03:03:07
回答 2查看 2.7K关注 0票数 0

我遇到了带有GridLayoutManagerRecyclerViewonClick()上不起作用的情况。像ListView一样,当我点击/点击GridView中的图片时,onClick不会返回单个项目的详细信息。当我点击一部电影的海报时,它应该只显示关于特定电影的详细信息,但它却在滚动视图中显示多部电影的详细信息。

请看下面的代码:

public class MoviesGridAdapter extends RecyclerView.Adapter<MoviesGridAdapter.PosterViewHolder> {

    private Context context;
    private List<Movies> movieItems = new ArrayList<>();
    CustomItemClickListener listener;

    public MoviesGridAdapter(Context context, List<Movies> movieItems) {
        this.context = context;
        this.movieItems = movieItems;
    }


    @Override
    public PosterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.movies_grid_view_item, parent, false);
        final MoviesGridAdapter.PosterViewHolder vh = new MoviesGridAdapter.PosterViewHolder(view);
        view.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final Context zContext = context;
                Intent intent = new Intent(zContext, MoviesDetailActivity.class);
                Movies movies = movieItems.get(vh.getAdapterPosition());
                intent.putExtra("Items Selection", movies.getPosterPath());
                intent.putExtra("Items Selection 1", movies.getTitle());
                intent.putExtra("Items Selection 2", movies.getReleaseDate());
                intent.putExtra("Items Selection 3", movies.getVoteAverage());
                intent.putExtra("Items Selection 4", movies.getOverview());
                zContext.startActivity(intent);
            }
        });
        return vh;
    }

    public void setMoviesData(List<Movies> moviesData) {
        movieItems = moviesData;
        notifyDataSetChanged();
    }


    @Override
    public void onBindViewHolder(PosterViewHolder holder, final int position) {

        Context mcontext = context;
        Movies movies = movieItems.get(position);

        String posterUrlPath = movies.getPosterPath();

        Picasso.with(mcontext)
                .load(Constants.MOVIES_POSTER_URL + posterUrlPath)
                .into(holder.poster);

    }

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

    public class PosterViewHolder extends RecyclerView.ViewHolder {
        ImageView poster;    
        public PosterViewHolder(final View itemView) {
            super(itemView);
            poster = (ImageView) itemView.findViewById(R.id.movies_image_view_retrofit);
        }
    }

}

以下是片段:

public class MoviesFragment extends Fragment {

    private static final int COLUMN_COUNT = 2;
    private List<Movies> movieItems = new ArrayList<>();
    private RecyclerView recyclerView;
    private MoviesGridAdapter adapter;
    private Subscription subscription;

    public MoviesFragment() {
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.movies_fragment_content, container, false);

        GridLayoutManager layoutManager = new GridLayoutManager(getContext(), COLUMN_COUNT);
        recyclerView = (RecyclerView) view.findViewById(R.id.movies_recycler_view);
        recyclerView.setHasFixedSize(true);
        recyclerView.setLayoutManager(layoutManager);

        adapter = new MoviesGridAdapter(getActivity(), movieItems);
        recyclerView.setAdapter(adapter);

        return view;
    }

    @Override
    public void onStart() {
        super.onStart();

        if (movieItems != null) {
            adapter.setMoviesData(movieItems);
        }
        loadDate();
    }

    private void loadDate() {
        MoviesAPI api = RetrofitManager.getMoviesClient().create(MoviesAPI.class);

        subscription = api.getPopularMovies(APIKeys.MOVIES_DB_API_KEY)
                .observeOn(AndroidSchedulers.mainThread())
                .subscribeOn(Schedulers.io())
                .subscribe(
                        new Action1<MoviesResponse>() {
                            @Override
                            public void call(MoviesResponse response) {
                                movieItems = response.getMovies();
                                adapter.setMoviesData(response.getMovies());
                            }
                        }, new Action1<Throwable>() {
                            @Override
                            public void call(Throwable throwable) {

                            }
                        }
                );
    }

}

谢谢你们的关注。我正在寻找的解决方案是:当我单击网格视图中的图片时,我需要有关特定电影的详细信息,如标题、概述、releaseDate等。

EN

回答 2

Stack Overflow用户

回答已采纳

发布于 2016-11-14 03:56:42

使您的模型可以打包,或者使用不同的关键字逐个发送您的模型字段。您将在此处添加具有不同值的相同关键字:

intent.putExtra("Items Selection", movies.getPosterPath());
                intent.putExtra("Items Selection", movies.getTitle());
                intent.putExtra("Items Selection", movies.getReleaseDate());
                intent.putExtra("Items Selection", movies.getVoteAverage());
                intent.putExtra("Items Selection", movies.getOverview());   

这里有一个教程链接,告诉你如何让你的模型成为parcelable。在此之后,您可以按如下方式更新适配器:

public class MoviesGridAdapter extends RecyclerView.Adapter<MoviesGridAdapter.PosterViewHolder> {

    private Context context;
    private List<Movies> movieItems = new ArrayList<>();
    CustomItemClickListener listener;

    public MoviesGridAdapter(Context context, List<Movies> movieItems) {
        this.context = context;
        this.movieItems = movieItems;
    }


    @Override
    public PosterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.movies_grid_view_item, parent, false);
        return new PosterViewHolder(view);
    }

    public void setMoviesData(List<Movies> moviesData) {
        movieItems = moviesData;
        notifyDataSetChanged();
    }


    @Override
    public void onBindViewHolder(PosterViewHolder holder, final int position) {

        Movies movie = movieItems.get(position);

        String posterUrlPath = movie.getPosterPath();

        Picasso.with(mcontext)
                .load(Constants.MOVIES_POSTER_URL + posterUrlPath)
                .into(holder.poster);

        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {               
                Intent intent = new Intent(context, MoviesDetailActivity.class);          
                intent.putExtra("movie", movie) 
                context.startActivity(intent);
            }
        });

    }

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

    public class PosterViewHolder extends RecyclerView.ViewHolder {
        ImageView poster;
        public PosterViewHolder(View itemView) {
            super(itemView);
            poster = (ImageView) itemView.findViewById(R.id.movies_image_view_retrofit);
        }
    }

}
票数 2
EN

Stack Overflow用户

发布于 2016-11-14 03:07:51

不要在onCreateViewHolder中设置点击监听器。相反,在onBindViewHolder方法中设置侦听器

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/40577659

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