Question

我创建了一个简单的RecycleView组件。然后为该组件创建一个新活动。在一行中，我有TextView和Button。我想要做的是改变对象中的某些东西，这些东西被放入了令人兴奋的一排。

首先我初始化了Button：

public class RecycleViewAllWashesActivity extends Activity {
    private Button isFavorite;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.row_recycleview);
        isFavorite = (Button) findViewById(R.id.addToFav);
        isFavorite.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.w("myApp", String.valueOf(v.getId()));
                int id = v.getId();
            }
        });
    }
}

RecycleView的适配器看起来像：

@Override
    public MyAdapter.WashLocationViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        LayoutInflater inflater = LayoutInflater.from(context);

        // Inflate the custom layout
        View view = inflater.inflate(R.layout.row_recycleview, parent, false);

        // Return a new holder instance
        WashLocationViewHolder viewHolder = new WashLocationViewHolder(view);
        return viewHolder;
    }

    // Involves populating data into the item through holder
    @Override
    public void onBindViewHolder(MyAdapter.WashLocationViewHolder viewHolder, int position) {
        // Get the data model based on position
        WashLocation w = washLocations.get(position);
        String info = w.getWashName();

        // Set item views based on your views and data model
        TextView textView = viewHolder.info;
        textView.setText(info);

        Integer fav = w.getFav();
        Boolean favorite = fav == 1 ? true : false;
        Button addToFav = viewHolder.favorite;
        addToFav.setText(favorite == true ? "Usuń z ulubionych" : "Dodaj do ulubionych");
    }

问题：

如何获取放入一行的对象？
当我点击Button（上面的代码）时，它没有反应，即使设置的断点也没有反应？ - ＆GT;在单击按钮时我看到的控制台中的东西是： 04-17 13:11:00.137 7671-7671/com.example.micha.locationtest D/ViewRootImpl: ViewPostImeInputStage ACTION_DOWN

============================== 的更新

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ItemHolder> {

    private List<WashLocation> washLocations;
    private OnItemClickListener onItemClickListener;
    private LayoutInflater layoutInflater;

    public MyAdapter(List<WashLocation> washLocations, Context context) {
        layoutInflater = LayoutInflater.from(context);
        this.washLocations = washLocations;
    }

    @Override
    public MyAdapter.ItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = layoutInflater.inflate(R.layout.row_recycleview, parent, false);
        return new ItemHolder(itemView, this);
    }

    @Override
    public void onBindViewHolder(MyAdapter.ItemHolder holder, int position) {
        // Get the data model based on position
        WashLocation w = washLocations.get(position);
        String info = w.getWashName();

        // Set item views based on your views and data model
        TextView textView = holder.info;
        textView.setText(info);

        Integer fav = w.getFav();
        Boolean favorite = fav == 1 ? true : false;
        Button addToFav = holder.favorite;
        addToFav.setText(favorite == true ? "Usuń z ulubionych" : "Dodaj do ulubionych");
    }

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

    public void setOnItemClickListener(OnItemClickListener listener) {
        onItemClickListener = listener;
    }

    public OnItemClickListener getOnItemClickListener() {
        return onItemClickListener;
    }

    public interface OnItemClickListener {
        public void onItemClick(ItemHolder item, int position);
    }

  /*  public void add(int location, String iName){
        itemsName.add(location, iName);
        notifyItemInserted(location);
    }

    public void remove(int location){
        if(location >= itemsName.size())
            return;

        itemsName.remove(location);
        notifyItemRemoved(location);
    }*/

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

        private MyAdapter parent;
        TextView textItemName;
        public TextView info;
        public Button favorite;

        public ItemHolder(View itemView, MyAdapter parent) {
            super(itemView);
            itemView.setOnClickListener(this);
            this.parent = parent;
            info = (TextView) itemView.findViewById(R.id.textView);
            favorite = (Button) itemView.findViewById(R.id.addToFav);
        }

        public void setItemName(CharSequence name) {
            textItemName.setText(name);
        }

        public CharSequence getItemName() {
            return textItemName.getText();
        }

        @Override
        public void onClick(View v) {
            final OnItemClickListener listener = parent.getOnItemClickListener();
            if (listener != null) {
                listener.onItemClick(this, getPosition());
            }
        }
    }
}

活动类：

final DataBaseHelper dataBaseHelper = new DataBaseHelper(getApplicationContext());
washLocations = dataBaseHelper.getWashLocation();

mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
mAdapter = new MyAdapter(washLocations, this);
mAdapter.setOnItemClickListener(this);
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));



 @Override
    public void onItemClick(MyAdapter.ItemHolder item, int position) {
        Log.d("myApp", "fdsgfds");
    }

Answer 1

在回收审核中，您必须明确为视图设置onClickListener。它没有任何默认方法来处理listview等点击事件。

您需要在WashLocationViewHolder

中为按钮设置Onclick监听器

您将在那里收到点击事件。从视图持有者，您可以使用界面将事件发送回您的片段或活动。

如果您需要进一步的帮助，请在评论中提及。我会为你提供一些样品。

如何获取放入一行的对象？

要执行此操作，您可以使用布局中的setTag(Object)方法或要为其提供单击侦听器的按钮将对象设置为标记。然后，您可以使用视图中的getTag()方法获取对象。

希望这有帮助。

按钮在点击RecycleView时没有反应

1 个答案: