在 ListFragment 中添加 onListItemLick/onItemLongClick

Question

在评论中解决：Adding onListItemLick/onItemLongClick in a ListFragment 问题是由 ListFragment 中单个元素的布局中的 ImageButton 产生的，即使 focusable 元素设置为 false，它仍在窃取输入，因此我不得不将其从布局中删除。

我有一个由 SimpleCursorAdapter 的扩展类填充的 ListFragment（主要用于覆盖 newView 方法），但我想在用户按下（或长按）适配器生成的列表中的项目时添加一个 AlertDialog。 我已经使用Log.d 方法尝试了onListItemClick 和onItemLongClick 的简单日志写入，但在这两种情况下都没有发生任何事情，我不知道问题出在哪里，因为代码非常简单：

public class FragmentD extends ListFragment {

private SQLiteDatabase db;

@Override
public void onActivityCreated (Bundle savedInstanceState) {

    super.onActivityCreated(savedInstanceState);

    myDatabase myDBHelper = new myDatabase(getActivity());
    db = myDBHelper.getWritableDatabase();

    Log.d("DB", "Insert fatto");

    String[] res_columns = new String[] {myDatabase.COLUMN2, myDatabase.COLUMN2,};
    String sortOrder = myDatabase.COLUMN1 + " DESC";

    String where = "*";

    Cursor testCursor = db.rawQuery("select * from " + database.DATABASE_TABLE, null);

    myAdapter adapter = new myAdapter(getActivity(),
            R.layout.list_element,
            testCursor,
            res_columns,
            new int[] { },
            0);

    setListAdapter(adapter);
}

@Override
public void onListItemClick (ListView l, View v, int pos, long id) {
    super.onListItemClick(l, v, pos, id);
        Log.d("CLICK", "pressed");
    }

Answer 1

编辑答案： 也许布局的组件正在窃取布局其他组件的输入

Answer 2

我有两个解决方案

1. 简单地覆盖 onListItemClick

   @覆盖 public void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id);

     Log.i("position",position);
   

   }

2. 在根布局上。添加此代码

   android:descendantFocusability="blocksDescendants"

希望对你有帮助

Answer 3

添加超级构造函数并覆盖它：

@Override
public void onListItemClick (ListView l, View v, int pos, long id) {
    super.onListItemClick(l, v, pos, id);
    Log.d("CLICK", "pressed");
}

编辑：试试这段代码

public class FragmentD extends ListFragment {

private SQLiteDatabase db;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View v = inflater.inflate(YOUR LISTFRAGMENT LAYOUT HERE, container, false);

    myDatabase myDBHelper = new myDatabase(getActivity());
    db = myDBHelper.getWritableDatabase();

    Log.d("DB", "Insert fatto");

    String[] res_columns = new String[] {myDatabase.COLUMN2, myDatabase.COLUMN2,};
    String sortOrder = myDatabase.COLUMN1 + " DESC";

    String where = "*";

    Cursor testCursor = db.rawQuery("select * from " + database.DATABASE_TABLE, null);

    myAdapter adapter = new myAdapter(getActivity(),
            R.layout.list_element,
            testCursor,
            res_columns,
            new int[] { },
            0);

    setListAdapter(adapter);

    return v;
}

@Override
public void onListItemClick (ListView l, View v, int pos, long id) {
    super.onListItemClick(l, v, pos, id);
    Log.d("CLICK", "pressed");
}