老规矩 先上效果图

C7A67E908AEA87E6508BD1309CD994C2.png

实现过程

添加依赖 版本根据你build版本来

implementation 'com.android.support:design:27.1.1'

自定义类：ListBottomSheetDialogFragment继承BottomSheetDialogFragment

/**
 * @Author： 淘跑
 * @Date: 2018/7/2 15:18
 * @Use：
 */
public class ListBottomSheetDialogFragment extends BottomSheetDialogFragment {
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //给dialog设置主题为透明背景 不然会有默认的白色背景
         setStyle(DialogFragment.STYLE_NO_FRAME, R.style.CustomBottomSheetDialogTheme);
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        // 在这里将view的高度设置为精确高度，即可屏蔽向上滑动不占全屏的手势。
        //如果不设置高度的话 会默认向上滑动时dialog覆盖全屏
        View view = inflater.inflate(R.layout.fragment_item_list_dialog, container, false);
        view.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                getScreenHeight(getActivity()) / 2));
        return view;
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        final RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.rv);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        recyclerView.setAdapter(new ItemAdapter(100));
    }

    private class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.MyViewHolder> {
        private final int mItemCount;

        ItemAdapter(int itemCount) {
            mItemCount = itemCount;
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            return new MyViewHolder(LayoutInflater.from(parent.getContext()), parent);
        }

        @Override
        public void onBindViewHolder(MyViewHolder holder, int position) {
            holder.text.setText(String.valueOf(position));
        }

        @Override
        public int getItemCount() {
            return mItemCount;
        }

        public class MyViewHolder extends RecyclerView.ViewHolder {
            final TextView text;

            MyViewHolder(LayoutInflater inflater, ViewGroup parent) {
                super(inflater.inflate(R.layout.fragment_item_list_dialog_item, parent, false));
                text = (TextView) itemView.findViewById(R.id.text);
            }
        }

    }

    /**
     * 得到屏幕的高
     *
     * @param context
     * @return
     */
    public static int getScreenHeight(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        int height = wm.getDefaultDisplay().getHeight();
        return height;
    }

}

自定义布局文件 fragment_item_list_dialog

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/shape_round_white">

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

</LinearLayout>

item布局文件 fragment_item_list_dialog_item

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:padding="10dp"
        android:textColor="@android:color/black" />
</LinearLayout>

自定义样式style: CustomBottomSheetDialogTheme这里设置的是背景也是透明的

<style name="CustomBottomSheetDialogTheme" parent="Widget.Design.BottomSheet.Modal">
        <item name="android:background">@android:color/transparent</item><!--边框-->
        <item name="android:windowFrame">@null</item><!--边框-->
        <item name="android:windowIsFloating">true</item><!--是否浮现在activity之上-->
        <item name="android:windowIsTranslucent">false</item><!--半透明-->
        <item name="android:windowNoTitle">true</item><!--无标题-->
        <item name="android:windowBackground">@android:color/transparent</item><!--背景透明-->
        <item name="android:backgroundDimEnabled">false</item><!--模糊-->
 </style>