如何點擊 Recycler View 並使用 equals 進行掃描？ - Java

Question

由於 ListView 不夠優化，我決定切換到 Recycler View。 打我的第一個問題是這個。

我的 RecyclerView 適配器：

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

    private List<String> mData;
    private LayoutInflater mInflater;
    private ItemClickListener mClickListener;

    // data is passed into the constructor
    MyRecyclerViewAdapter(Context context, List<String> data) {
        this.mInflater = LayoutInflater.from(context);
        this.mData = data;
    }

    // inflates the row layout from xml when needed
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = mInflater.inflate(R.layout.adapter_box, parent, false);
        return new ViewHolder(view);
    }

    // binds the data to the TextView in each row
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        String animal = mData.get(position);
        holder.myTextView.setText(animal);
    }

    // total number of rows
    @Override
    public int getItemCount() {
        return mData.size();
    }


    // stores and recycles views as they are scrolled off screen
    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        TextView myTextView;

        ViewHolder(View itemView) {
            super(itemView);
            myTextView = itemView.findViewById(R.id.text_adapter);
            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View view) {
            if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
        }
    }

    // convenience method for getting data at click position
    String getItem(int id) {
        return mData.get(id);
    }

    // allows clicks events to be caught
    void setClickListener(ItemClickListener itemClickListener) {
        this.mClickListener = itemClickListener;
    }

    // parent activity will implement this method to respond to click events
    public interface ItemClickListener {
        void onItemClick(View view, int position);
    }

使用 ListView 我可以這樣做：

ListView listView = findViewById(R.id.testL);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (parent.getItemAtPosition(position).equals("hello")) {
                    TextView details = word_dialog.findViewById(R.id.word_edit_desc);
                    details.setText("hello");
                }
            }
        });

我如何才能獲得相同的結果，但只能使用回收視圖？：

 @Override
    public void onItemClick(View view, int position) {

    }

如果您能幫助我，我將不勝感激！

我希望能夠單擊 MainActivity.java 中的回收器視圖項目，我已經做到了，現在我需要能夠對使用等號排序的每一行執行自己的操作

        ArrayList<String> animalNames = new ArrayList<>();
        animalNames.add("Dog");
        animalNames.add("Cow");
        animalNames.add("Camel");
        animalNames.add("Sheep");
        animalNames.add("Goat");

        // set up the RecyclerView
        recyclerView = findViewById(R.id.myList);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        adapter = new MyRecyclerViewAdapter(this, animalNames);
        adapter.setClickListener(this);
        recyclerView.setAdapter(adapter);

 if (somecode.equals("Dog")){
            soundPlay(MediaPlayer.create(getBaseContext(), R.raw.star));
        }
        if (somecode.equals("Camel")){
            soundPlay(MediaPlayer.create(getBaseContext(), R.raw.tick));
        }

Answer 1

這是 Recyclerview 的 Inbuild Click 事件和另一種使用界面的方法

 holder.itemView.setOnClickListener(v ->

        if (animal.equals("Your animal String"){
    //Your code
    }
); 

如果想使用界面那么這是參考鏈接

Answer 2

您可以在適配器中定義一個接口，如下所示

public interface ClickListener{
    void onClick();            
}   

在片段或活動中實施您的適配器：

ClickListener listener = () ->{
    TextView details = word_dialog.findViewById(R.id.word_edit_desc);
    details.setText("hello");
}

然后使用構造函數或 setter 將接口傳遞給適配器，您可以在綁定時在 viewHolder 中使用接口，如下所示：

itemView.setOnClickListener(()->{
   if (your_list.get(getAdapterPosition()).equals("hello")) {
       interface_var_name.onClick()             
   }
});