android - 如何用 ListPopupWindow 替换我的弹出菜单代码？

Question

目前，我正在以编程方式创建一个显示楼层列表和标题的弹出菜单。然而，仅仅改变标题的背景颜色并为标题添加一个关闭按钮被证明是一场噩梦。

我想用列表弹出窗口替换此弹出菜单，这样我就可以添加一个带有背景属性的 XML 文件，标题为黑色，背景为黑色，右侧为关闭按钮，菜单中的项目为白色背景。有没有办法用列表弹出窗口实现这个？这是我的代码:

private void floorMenu(ImageView btnFloorMenu){
    MapData data = new MapDao(MyPlugin.mapId);
    final List<Floor> flList = dao.getFloors();
    // set popupMenu
    final PopupMenu floorsPm = new PopupMenu(MapViewActivity.this,btnFloorMenu);

    MenuItem titleItem =  floorsPm.getMenu().add(Menu.NONE, Menu.NONE, Menu.NONE, "Floors");

    int i = 1;
    for(Floor fl : flList)
    {
        floorsPm.getMenu().add(Menu.NONE, i,i, fl.getName());
        if(i>3)
            break;
        i++;
    }


    // add popup listener
    floorsPm.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        //    onClick
        @Override
        public boolean onMenuItemClick(MenuItem item){
            //       get floorname

            int flOrder = item.getOrder();
            if(flOrder == Menu.NONE )
                return true;
            flOrder--;

            final String floorId = flList.get(flOrder).getMapId();

            //       set camera to floor

            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    floorsPm.dismiss();
                    mapFragment.getMapManager().setCameraLayer(floorId, false);
                     Log.d(TAG, "post cameraLayer set");
                    changedSteps = true;
                    pauseNav();

                }
            });




            return true;
        }

    });
    floorsPm.show();


}

Answer 1

这是我创建显示 ListPopupWindow

的示例

首先，为ListPopupWindow的每一项创建布局item_list_popup_window

<?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"
    android:background="#e4e4e4"
    android:paddingTop="1dp"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/text_title"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="1" />

    <Button
        android:id="@+id/button_delete"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Delete" />

</LinearLayout>

其次，为您的 ListPopupWindow 创建一个 Adapter，例如

public class ListPopupWindowAdapter extends BaseAdapter{
    private Activity mActivity;
    private List<String> mDataSource = new ArrayList<>();
    private LayoutInflater layoutInflater;
    private OnClickDeleteButtonListener clickDeleteButtonListener;

    ListPopupWindowAdapter(Activity activity, List<String> dataSource, @NonNull OnClickDeleteButtonListener clickDeleteButtonListener){
        this.mActivity = activity;
        this.mDataSource = dataSource;
        layoutInflater = mActivity.getLayoutInflater();
        this.clickDeleteButtonListener = clickDeleteButtonListener;
    }

    @Override
    public int getCount() {
        return mDataSource.size();
    }

    @Override
    public String getItem(int position) {
        return mDataSource.get(position);
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if(convertView == null){
            holder = new ViewHolder();
            convertView = layoutInflater.inflate(R.layout.item_list_popup_window, null);
            holder.tvTitle = (TextView) convertView.findViewById(R.id.text_title);
            holder.btnDelete = (Button) convertView.findViewById(R.id.button_delete);
            convertView.setTag(holder);
        }else{
            holder = (ViewHolder) convertView.getTag();
        }

        // bind data
        holder.tvTitle.setText(getItem(position));
        holder.btnDelete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                clickDeleteButtonListener.onClickDeleteButton(position);
            }
        });
        return convertView;
    }

    public class ViewHolder{
        private TextView tvTitle;
        private Button btnDelete;
    }

    // interface to return callback to activity
    public interface OnClickDeleteButtonListener{
        void onClickDeleteButton(int position);
    }
}

第三， 您创建一个用于创建和显示 ListPopupWindow

的函数

private void showListPopupWindow(View anchorView) {
    final ListPopupWindow listPopupWindow = new ListPopupWindow(this);
    listPopupWindow.setWidth(600);
    List<String> sampleData = new ArrayList<>();
    sampleData.add("A");
    sampleData.add("B");
    sampleData.add("CCCCCCCCCCCCCC");
    sampleData.add("D");
    sampleData.add("EEEEEEEEE");

    listPopupWindow.setAnchorView(anchorView);
    ListPopupWindowAdapter listPopupWindowAdapter = new ListPopupWindowAdapter(this, sampleData, new ListPopupWindowAdapter.OnClickDeleteButtonListener() {
        @Override
        public void onClickDeleteButton(int position) {
            Toast.makeText(MainActivity.this, "Click delete " + position, Toast.LENGTH_SHORT).show();
            listPopupWindow.dismiss();
        }
    });
    listPopupWindow.setAdapter(listPopupWindowAdapter);
    listPopupWindow.show();
}

最后，您可以通过

显示ListPopupWindow

showListPopupWindow(v);

比如点击按钮时显示

anyButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        showListPopupWindow(v);
    }
});

Full Demo is here