字符串＆gt;在ArrayAdapter＆LT删除项目;在ListView控件 [英] Remove item in ArrayAdapter<String> in ListView

问题描述

我想删除ListView中单击项目。

  

的解决方案是使用一个String []的ArrayList代替;

下面是我的code：

公共类MyDialogFragment扩展DialogFragment {

  @覆盖
公共对话onCreateDialog（包savedInstanceState）{

    AlertDialog.Builder建设者=新AlertDialog.Builder（getActivity（））;
    builder.setTitle（CritèresSupplémentaires）;
    builder.setNegativeButton（取消，
            新DialogInterface.OnClickListener（）{
                公共无效的onClick（DialogInterface对话，诠释whichButton）{
                    OnCancel的（对话）;
                }
            }
    ）;

    LayoutInflater充气=（LayoutInflater）getActivity（）getSystemService（Context.LAYOUT_INFLATER_SERVICE）。
    查看MVIEW = inflater.inflate（R.layout.fragment_dialog，NULL）;
    ListView控件mListView =（ListView控件）mView.findViewById（R.id.lvListe）;

    的String [] mValues​​ = {方向，农布雷迪奥斯CHAMBRES，农布雷迪奥斯沙利德班，农布雷迪奥斯洗手间，洞天，停车，车库，花园};

    最后ArrayAdapter＆LT;字符串＆GT;适配器=新的ArrayAdapter＆LT;字符串＆GT;（getActivity（），android.R.layout.simple_list_item_1，mValues​​）;
    mListView.setAdapter（适配器）;
    mListView.setOnItemClickListener（新android.widget.AdapterView.OnItemClickListener（）{
        @覆盖
        公共无效onItemClick（适配器视图＆LT;＆GT;母公司视图中查看，INT位置，长的id）{
            字符串项=（字符串）parent.getItemAtPosition（位置）;
            adapter.remove（adapter.getItem（位置））;
            adapter.notifyDataSetChanged（）;
            Toast.makeText（getActivity（），你已经选择：+项目，Toast.LENGTH_SHORT）.show（）;
        }
    }）;
    builder.setView（mListView）;

    返回builder.create（）;
}
 

但adapter.remove（），使应用程序崩溃与此错误：

  

java.lang.UnsupportedOperationException

我应该怎么做，如果我想删除一个项目？

在此先感谢：）

解决方案

 的String [] mValues​​ = {方向，农布雷迪奥斯CHAMBRES，农布雷迪奥斯沙利德班， 农布雷迪奥斯洗手间，洞天，停车，车库，花园};

       最后的ArrayList＆LT;字符串＆GT;名单=新的ArrayList＆LT;字符串＆GT;（Arrays.asList（mValues​​））;
        最后ArrayAdapter＆LT;字符串＆GT;适配器=新的ArrayAdapter＆LT;字符串＆GT;（getActivity（），android.R.layout.simple_list_item_1，清单）;
        mListView.setAdapter（适配器）;
        mListView.setOnItemClickListener（新android.widget.AdapterView.OnItemClickListener（）{
            @覆盖
            公共无效onItemClick（适配器视图＆LT;＆GT;母公司视图中查看，INT位置，长的id）{
                字符串项= list.get（位置）;
                list.remove（位置）;
                adapter.notifyDataSetChanged（）;
                Toast.makeText（getActivity（），你已经选择：+项目，Toast.LENGTH_SHORT）.show（）;
            }
        }）;
 

I would like to delete a clicked item in ListView.

The solution is to use an ArrayList instead of a String[];

Here is my code:

public class MyDialogFragment extends DialogFragment {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setTitle("Critères Supplémentaires");
    builder.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {
                    onCancel(dialog);
                }
            }
    );

    LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View mView = inflater.inflate(R.layout.fragment_dialog, null);
    ListView mListView = (ListView) mView.findViewById(R.id.lvListe);

    String[] mValues = {"Orientation", "Nombre de Chambres", "Nombre de Salle de bains", "Nombre de toilettes", "Cave", "Parking", "Garage", "Jardin"};

    final ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, mValues);
    mListView.setAdapter(adapter);
    mListView.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String item = (String) parent.getItemAtPosition(position);
            adapter.remove(adapter.getItem(position));
            adapter.notifyDataSetChanged();
            Toast.makeText(getActivity(), "You selected : " + item, Toast.LENGTH_SHORT).show();
        }
    });
    builder.setView(mListView);

    return builder.create();
}

But adapter.remove() makes the application crash with this error:

java.lang.UnsupportedOperationException

What should I do if I want remove an item ?

Thanks in advance :)

解决方案

      String[] mValues = {"Orientation", "Nombre de Chambres", "Nombre de Salle de bains", "Nombre de toilettes", "Cave", "Parking", "Garage", "Jardin"};

       final ArrayList<String> list =new ArrayList<String>(Arrays.asList(mValues));  
        final ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, list);
        mListView.setAdapter(adapter);
        mListView.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String item = list.get(position);
                list.remove(position);
                adapter.notifyDataSetChanged();
                Toast.makeText(getActivity(), "You selected : " + item, Toast.LENGTH_SHORT).show();
            }
        });

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