Android RecyclerView OnClickListener 没有反应

Question

好的，所以我在我的项目中使用 RecyclerView 并且需要为每个列表项实现点击监听器并在每个项目中实现一个图标。

我尝试的是这个解决方案：https://stackoverflow.com/a/24933117/722462 因为它对我来说看起来很不错。但我无法让点击监听器对任何点击事件做出反应。任何想法我的实施有什么问题？下面列出的所有文件。

fragment_search.xml：

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivityFragment">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/search_recycler_view"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <LinearLayout
        android:id="@+id/search_empty"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center_vertical|center_horizontal"
        android:orientation="vertical"
        android:visibility="gone">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/icon_search_empty"
            android:background="@drawable/ic_info_outline_black_48dp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Brak wyników wyszukiwania"
            android:id="@+id/text_search_empty" />
    </LinearLayout>

</RelativeLayout>

列表项：

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/item_station_layout"
    android:layout_width="match_parent"
    android:clickable="true"
    android:layout_height="48dp">

    <ImageView
        android:id="@+id/icon_item_station_fav"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:background="@drawable/ic_favorite_border_blue_24dp"
        android:clickable="true"
        android:paddingLeft="16dp"
        android:tint="#E3F2FD"/>

    <TextView
        android:id="@+id/item_station_name"
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:paddingLeft="58dp"
        android:gravity="start|center_vertical"
        android:clickable="true"
        android:ellipsize="end"
        android:maxLines="1"
        android:singleLine="true"
        android:textSize="16sp" />

</RelativeLayout>

最后是 SearchAdapter.java：

    public class SearchAdapter extends RecyclerView.Adapter<SearchAdapter.ViewHolder> {

    private List<StationDTO> stations;

    public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public TextView stationName;
        public ImageView favIcon;

        private IHasSearchViewHolderCallback hasSearchViewHolderCallback;

        public ViewHolder(View itemView, IHasSearchViewHolderCallback hasSearchViewHolderCallback) {
            super(itemView);

            this.hasSearchViewHolderCallback = hasSearchViewHolderCallback;

            favIcon = (ImageView) itemView.findViewById(R.id.icon_item_station_fav);
            stationName = (TextView) itemView.findViewById(R.id.item_station_name);

            itemView.setOnClickListener(this);
            favIcon.setOnClickListener(this);

            Context ctx = itemView.getContext().getApplicationContext();
            FontHelper.ROBOTO_REGULAR.on(ctx, stationName);
        }

        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.item_station_layout:
                    hasSearchViewHolderCallback.onItemLayout(getAdapterPosition());
                    break;
                case R.id.icon_item_station_fav:
                    hasSearchViewHolderCallback.onFavIcon(getAdapterPosition());
                    break;
                case R.id.item_station_name:
                    hasSearchViewHolderCallback.onStationName(getAdapterPosition());
                    break;
            }
        }

        public interface IHasSearchViewHolderCallback {
            void onItemLayout(int position);
            void onFavIcon(int position);
            void onStationName(int position);
        }
    }

    public SearchAdapter(List<StationDTO> stations) {
        this.stations = stations;
    }

    @Override
    public SearchAdapter.ViewHolder onCreateViewHolder(final ViewGroup parent, int viewType) {

        View item = LayoutInflater
                .from(parent.getContext())
                .inflate(R.layout.item_station, parent, false);

        ViewHolder vh = new ViewHolder(item, new ViewHolder.IHasSearchViewHolderCallback() {
            @Override
            public void onItemLayout(int position) {
                Toast.makeText(parent.getContext(), "LAYOUT #" + position, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFavIcon(int position) {
                Toast.makeText(parent.getContext(), "FAV #" + position, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onStationName(int position) {
                Toast.makeText(parent.getContext(), "NAME #" + position, Toast.LENGTH_SHORT).show();
            }
        });

        return vh;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        StationDTO dto = stations.get(position);

        holder.stationName.setText(dto.getName());
    }

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

}

Answer 1

尝试改变：

@Override
public void onClick(View v) {
            switch (v.getId()) {
                case R.id.item_station_layout:
                    hasSearchViewHolderCallback.onItemLayout(getAdapterPosition());
                    break;
                case R.id.icon_item_station_fav:
                    hasSearchViewHolderCallback.onFavIcon(getAdapterPosition());
                    break;
                case R.id.item_station_name:
                    hasSearchViewHolderCallback.onStationName(getAdapterPosition());
                    break;
            }
        }

到

itemView.setOnClickListener(new View.OnClickListener {
    @Override
    public void onClick(View v) {
    // appropriate code in here
    }
});

对 favIcon 执行相同的操作。我感觉您的问题是由于您的 OnClickListener 位于 ViewHolder 上，而不是实际上位于 TextView 和 ImageView 上。