ListView 具有正确的行数，但不显示文本

发布于 2024-11-05 02:44:26 字数 1240 浏览 4 评论 0原文

我在 tabhost 中创建了一个 ListActivity，该选项卡应该显示 sql 表中的所有记录。然而，当我单击该选项卡时，它显示了正确数量的行（分隔线），但没有任何其他数据/文本可供查看。所以基本上我得到一个空列表，并且我检查了数据库文件，数据就在那里！

我的表只有 _id 和 name 列。

这是我正在使用的代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Cursor c;
    ShowAdapter sa = new ShowAdapter(this);

    sa.open();
    c = sa.getSubscribedShows();

    String[] from = new String[] { "name" };
    int to[] = new int[] { R.id.text1 };
    SimpleCursorAdapter shows = new SimpleCursorAdapter(this, R.layout.show_list, c, from, to);

    setListAdapter(shows);
    sa.close();
}

我的其他方法只是返回光标：

public Cursor getSubscribedShows(){
    Cursor c = db.query(true, "shows", null, null, null, null, null, "name", null);
    c.moveToFirst();
    return c;
}

我的 XML 是：

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:textSize="16sp"
    android:id="@+id/text1" >
</TextView>

你知道我做错了什么吗？

原文

I have created a ListActivity inside a tabhost, and this tab is supposed to show all records from a sql table. When I click the tab however, it shows the right amount of rows (separation lines) but there's no data/text anything else to be seen. So basically I get an empty list, and I've checked the database file, the data is there!

My table only has the columns _id and name.

This is the code I'm using:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Cursor c;
    ShowAdapter sa = new ShowAdapter(this);

    sa.open();
    c = sa.getSubscribedShows();

    String[] from = new String[] { "name" };
    int to[] = new int[] { R.id.text1 };
    SimpleCursorAdapter shows = new SimpleCursorAdapter(this, R.layout.show_list, c, from, to);

    setListAdapter(shows);
    sa.close();
}

And my other method simply returns the cursor:

public Cursor getSubscribedShows(){
    Cursor c = db.query(true, "shows", null, null, null, null, null, "name", null);
    c.moveToFirst();
    return c;
}

And my XML is:

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:textSize="16sp"
    android:id="@+id/text1" >
</TextView>

Any ideas what I'm doing wrong?

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