从 SQLite 数据库获取数据到自定义卡片 GridView（库：Gabrielemariotti）

Question

我正在使用这个卡片库https://github.com/gabrielemariotti/cardslib。我已经实现了自定义 cardgridcursoradapter 并在此 class 的构造函数中传递了光标。这是我的自定义 cardgridcursoradapter class.

class CustCursorAdapter extends CardGridCursorAdapter{


    public CustCursorAdapter(Context context, Cursor c, boolean autoRequery) {
        super(context, c, autoRequery);
    }

    @Override
    protected Card getCardFromCursor(Cursor cursor) {

        MyCard card = new MyCard(super.getContext());

        return card;
    }

}

这不是显示卡片网格视图。我错过了什么吗？

Answer 1

嘿，我的朋友，你所做的一切都是正确的，但正如你所说的，它是自定义卡片网格视图，你需要 return 一个视图与你的卡片。这意味着您的适配器 class 需要覆盖 newview 和 bindview 方法。像这样。

class CustCursorAdapter extends CardGridCursorAdapter{


public CustCursorAdapter(Context context, Cursor c, boolean autoRequery) {
    super(context, c, autoRequery);
}

@Override
protected Card getCardFromCursor(Cursor cursor) {

    MyCard card = new MyCard(super.getContext());

    return card;
 }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        return LayoutInflater.from(context).inflate(R.layout.card_grid_item, parent, false);
    }

    @Override
    public void bindView(View view, Context context, Cursor cursor) {
        super.bindView(view, context, cursor);
        TextView id = (TextView) view.findViewById(R.id.id);
        TextView name = (TextView) view.findViewById(R.id.name);
        TextView username = (TextView) view.findViewById(R.id.username);
        TextView password = (TextView) view.findViewById(R.id.password);
        Integer cursor_id= cursor.getInt(cursor.getColumnIndexOrThrow("_id"));
        String cursor_name=cursor.getString(cursor.getColumnIndexOrThrow("Name"));
        String cursor_username=cursor.getString(cursor.getColumnIndexOrThrow("Username"));
        String cursor_password=cursor.getString(cursor.getColumnIndexOrThrow("Password"));
        id.setText(String.valueOf(cursor_id));
        name.setText(cursor_name);
        username.setText(cursor_username);
        password.setText(cursor_password);
    }
}

像这样更新了您的适配器子class。（记得更新 mycard class 布局和 java 文件。）

从 SQLite 数据库获取数据到自定义卡片 GridView（库：Gabrielemariotti）

Fetching data from SQLite Database to Custom Card GridView( Library: Gabrielemariotti)

sqlite

android

gridview