如何在 RecyclerView.Adapter 类中获取 Activity 按钮单击侦听器

Question

当用户按下 #button 时，它会如何在 RecyclerView 的焦点 EditText 上打印 #。我的代码和输出如下。请帮我....

我已经做了一切，但被困在这里。我可以得到任何建议或链接，提供有关如何实施的更多信息吗？

活动_main.xml

   <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout 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:orientation="vertical">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <Button
                android:id="@+id/btnAt"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="\@" />

            <Button
                android:id="@+id/btnHash"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="\#" />
        </LinearLayout>

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

    </LinearLayout>

主活动.java

   public class MainActivity extends AppCompatActivity implements View.OnClickListener {


            private RecyclerView mRecyclerView; // RecyclerVIew
            private CheckItemAdapter myAdapterRecyclerView; //The Adapter for RecyclerVIew

            Button btnAt, btnHash;

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

                mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
                setAdapter();


                btnAt = (Button) findViewById(R.id.btnAt);
                btnHash = (Button) findViewById(R.id.btnHash);
            }

            public void setAdapter() {
                mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); // Set LayoutManager in the RecyclerView
                myAdapterRecyclerView = new CheckItemAdapter(this, getData()); // Create Instance of MyAdapterRecyclerView
                mRecyclerView.setAdapter(myAdapterRecyclerView); // Set Adapter for RecyclerView
            }

            public ArrayList<ItemModel> getData() {

                ArrayList<ItemModel> itemModelArrayList = new ArrayList<ItemModel>();

                ItemModel itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);


                itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);

                itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);

                itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);

                itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);

                itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);

                itemModel = new ItemModel();
                itemModel.setChkText("ABC");
                itemModelArrayList.add(itemModel);

                return itemModelArrayList;
            }

            @Override
            public void onClick(View v) {

                if (v.getId() == R.id.btnAt) {
                    //print @ on focused EditText of RecyclerView item
                } else if (v.getId() == R.id.btnHash) {
                    //print # on focused EditText of RecyclerView item
                }
            }
        }

检查项适配器

     public class CheckItemAdapter extends RecyclerView.Adapter<CheckItemAdapter.MyViewHolder> {

            private ArrayList<ItemModel> mList;
            Context context;

            public CheckItemAdapter(Context context, ArrayList<ItemModel> mList) {
                this.mList = mList;
                this.context = context;
            }

            @Override
            public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {  // create a new view
                View itemLayoutView = LayoutInflater.from(context).inflate(R.layout.single_check_list, parent, false);

                // create ViewHolder
                MyViewHolder viewHolder = new MyViewHolder(itemLayoutView);

                return viewHolder;
            }

            @Override
            public void onBindViewHolder(MyViewHolder holder, int position) {
                ItemModel itemModel = mList.get(position);

                holder.editCheckItem.setText(itemModel.getChkText());
            }

            @Override
            public int getItemCount() {
                if (mList != null)
                    return mList.size();
                else
                    return 0;
            }

            public class MyViewHolder extends RecyclerView.ViewHolder {


                public EditText editCheckItem;
                public CheckBox chkItem;
                public TextView txtRemove;


                public MyViewHolder(View itemLayoutView) {
                    super(itemLayoutView);
                    editCheckItem = (EditText) itemLayoutView.findViewById(R.id.editCheckItem);
                }
            }
        }


   [![output image][1]][1]

Answer 1

在您的活动中将按钮声明为静态。

示例：在 ABCActivity 中：

public static Button btnTest;
@Override
public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_family_member);
    btnTest = (Button)findviewbyid(R.id.btnTest);
}

在适配器中：

ABCActivity.btnTest.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

        }
    });