RecycleView嵌套RecycleView，子Item内的

重写子RV事件即可

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.RecyclerView;

/**
 * Created by TU on 2019/8/27.
 */
public class RecycleScroll extends RecyclerView {
    public RecycleScroll(@NonNull Context context) {
        super(context);
    }

    public RecycleScroll(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public RecycleScroll(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent e) {
        getParent().requestDisallowInterceptTouchEvent(true);
        return super.onInterceptTouchEvent(e);
    }
}