Adapter嵌套Adapter，里层的Adapter布局有一个checkBox，activity怎样把处理checkBox事件，写个祥细的例子

首先，我们需要在外层的Adapter中定义一个接口来处理内层Adapter中CheckBox的点击事件。在外层Adapter中添加以下代码：

public interface OnCheckedChangeListener {
    void onCheckedChanged(boolean isChecked, int position);
}

然后，在外层Adapter的ViewHolder中设置内层Adapter的CheckBox监听器，并在CheckBox的回调中调用外层Adapter定义的接口。代码如下：

public class OuterAdapter extends RecyclerView.Adapter<OuterAdapter.ViewHolder> implements InnerAdapter.OnCheckedChangeListener {

    private List<List<String>> mData;
    private OnCheckedChangeListener mCheckedChangeListener;

    public OuterAdapter(List<List<String>> data) {
        mData = data;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_outer, parent, false);
        ViewHolder holder = new ViewHolder(view);
        holder.innerRecyclerView.setLayoutManager(new LinearLayoutManager(parent.getContext()));
        return holder;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        InnerAdapter innerAdapter = new InnerAdapter(mData.get(position));
        innerAdapter.setOnCheckedChangeListener(this);
        holder.innerRecyclerView.setAdapter(innerAdapter);
    }

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

    @Override
    public void onCheckedChanged(boolean isChecked, int position) {
        if (mCheckedChangeListener != null) {
            mCheckedChangeListener.onCheckedChanged(isChecked, position);
        }
    }

    public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
        mCheckedChangeListener = listener;
    }

    static class ViewHolder extends RecyclerView.ViewHolder {
        RecyclerView innerRecyclerView;

        ViewHolder(View itemView) {
            super(itemView);
            innerRecyclerView = itemView.findViewById(R.id.innerRecyclerView);
        }
    }
}

在内层Adapter中，我们需要定义一个接口，来处理CheckBox的点击事件。在CheckBox的回调中调用内层Adapter定义的接口。代码如下：

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

    private List<String> mData;
    private OnCheckedChangeListener mCheckedChangeListener;

    public InnerAdapter(List<String> data) {
        mData = data;
    }

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

    @Override
    public void onBindViewHolder(ViewHolder holder, final int position) {
        holder.checkBox.setText(mData.get(position));
        holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (mCheckedChangeListener != null) {
                    mCheckedChangeListener.onCheckedChanged(isChecked, position);
                }
            }
        });
    }

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

    public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
        mCheckedChangeListener = listener;
    }

    static class ViewHolder extends RecyclerView.ViewHolder {
        CheckBox checkBox;

        ViewHolder(View itemView) {
            super(itemView);
            checkBox = itemView.findViewById(R.id.checkBox);
        }
    }

    public interface OnCheckedChangeListener {
        void onCheckedChanged(boolean isChecked, int position);
    }
}

最后，在Activity中设置外层Adapter的接口回调即可处理CheckBox的点击事件。代码如下：

public class MainActivity extends AppCompatActivity {

    private List<List<String>> mData = new ArrayList<>();

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

        for (int i = 0; i < 3; i++) {
            List<String> innerData = new ArrayList<>();
            for (int j = 0; j < 5; j++) {
                innerData.add("Item " + j);
            }
            mData.add(innerData);
        }

        OuterAdapter outerAdapter = new OuterAdapter(mData);
        outerAdapter.setOnCheckedChangeListener(new OuterAdapter.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(boolean isChecked, int position) {
                Log.d("MainActivity", "CheckBox at position " + position + " is " + (isChecked ? "checked" : "unchecked"));
            }
        });
        RecyclerView recyclerView = findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(outerAdapter);
    }
}

这样，当CheckBox被点击时，会在控制台输出相应的信息。