Question

我想创建与图片相同的AlertDialog： enter image description here

我的代码：

adapter_book_desc.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:gravity="center_vertical"
    android:paddingLeft="15dip"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <CheckedTextView
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:id="@+id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="?android:attr/textColorSecondary" 
        android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</LinearLayout>

MainActivity

final CharSequence[] items = arr_book_title.toArray(new CharSequence[arr_book_title.size()]);
                final ArrayList<Integer> seletedItems = new ArrayList<Integer>();
                AlertDialog.Builder builder = new AlertDialog.Builder(_context);
                builder.setAdapter(new adapterBookDesc(), null);
                builder.setTitle(_context.getString(R.string.alert_selectbook_message));

                builder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int indexSelected, boolean isChecked) {
                        if (isChecked) {
                            seletedItems.add(indexSelected);
                        }else if(seletedItems.contains(indexSelected)){
                            seletedItems.remove(Integer.valueOf(indexSelected));
                        }
                    }
                }).setPositiveButton(R.string.button_ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int id) {
                        String rr = ""; 
                        for (Object s : seletedItems){
                            rr += s.toString() + ";";
                        }
                        if(!rr.equals("")){
                            new saveBookInAutor().executeOnExecutor(AsyncTask.SERIAL_EXECUTOR, rr, selGroupParam);
                        }else{
                            Toast.makeText(_context, R.string.toast_select_newbookautor, Toast.LENGTH_LONG).show();
                        }
                    }
                }).setNegativeButton(R.string.button_cancel, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int id) {
                    }
                });

                builder.create().show();

和BaseAdapter中的类

class adapterBookDesc extends BaseAdapter
{
    @Override
    public int getCount() 
    {
        return arr_book_title.size();
    }

    @Override
    public Object getItem(int position) 
    {
        return arr_book_title.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) 
    {
        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) _context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.adapter_book_desc, null);
        }

        ((TextView)convertView.findViewById(R.id.text1)).setText(arr_book_title.get(position));
        ((TextView)convertView.findViewById(R.id.text2)).setText(arr_book_param.get(position));

        return convertView;
    }
}

但是在图片中看起来并没有显示出来。但是，如果要注意行builder.setMultiChoiceItems的注释 - 它显示的所有内容，除了多项选择。

如何更正代码，使其与图像一样。多项选择和标题以及一个项目中的消息？

Answer 1

如果您必须在商家信息中显示两个TextView，那么您必须使用自定义适配器并且已经使用了该适配器，因此您无需使用builder.setMultiChoiceItems，只需自定义您的布局放置复选框即可布局和管理..

如果您不需要两个TextView，则删除自定义适配器。

Check this

AlertDialog multichoice上的自定义列表视图

1 个答案: