adapter-在 ListView 中使用 CursorAdapter 移除一個選擇項目

在 ListView 中使用 CursorAdapter 移除一個選擇項目

我設置了下面的 adapter 類，包含 CursorAdapter 方法。在列表中包含兩個文本視圖，並在每行設置一個按鈕。現在點擊按鈕時，我想從 list 中刪除選擇的項目，同時在數據庫中也刪除。
如何從數據庫中獲得選項的id，那樣我就可以刪除選項，然後告知adapter，刷新list。

public class MyAdapter extends CursorAdapter {

    Cursor c;
    LayoutInflater inflater;
    Context context;
    private String TAG = getClass().getSimpleName();

    public MyAdapter(Context context, Cursor c) {
        super(context, c);
        this.c = c;
        this.context = context;
        inflater = LayoutInflater.from(context);
    }

    @Override
    public void bindView(View view, Context context, final Cursor cursor) {

        TextView txtName = (TextView) view.findViewById(R.id.txt_name);
        txtName.setText(cursor.getString(cursor.getColumnIndex(Helper.tbl_col_username)));
        TextView txtPassword = (TextView) view.findViewById(R.id.txt_password);
        txtPassword.setText(cursor.getString(cursor.getColumnIndex(Helper.tbl_col_password)));

        Button button = (Button) view.findViewById(R.id.btn_delete);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View arg0) {
                Log.d(TAG, "Button Click ");
            }
        });
    }
    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        View v = inflater.inflate(R.layout.row, null); 
        return v;
    }
}

最佳回答：

試一下：

@Override
public void bindView(View view, Context context, final Cursor cursor) {

    TextView txtName = (TextView) view.findViewById(R.id.txt_name);
    txtName.setText(cursor.getString(cursor.getColumnIndex(Helper.tbl_col_username)));
    TextView txtPassword = (TextView) view.findViewById(R.id.txt_password);
    txtPassword.setText(cursor.getString(cursor.getColumnIndex(Helper.tbl_col_password)));

final String itemId = cursor.getString(cursor.getColumnIndex("id"));

    Button button = (Button) view.findViewById(R.id.btn_delete);
    button.setOnClickListener(new OnClickListener() {

        public void onClick(View arg0) {
            Log.d(TAG, "Button Click ");
            deleteRecordWithId(itemId);
            cursor.requery();
            notifyDataSetChanged();
        }
    });
}