来自 SQLite 数据的自定义对话框

Question

我（认为）我已经设法构建了在自定义对话框中显示 SQLite 数据所需的大部分代码，但仍然坚持如何将它们放在一起。

我的适配器如下所示：

public class ScoresDisplayerAdaptor extends CursorAdapter {
    private LayoutInflater mLayoutInflater;
    private Context mContext;
    public ScoresDisplayerAdaptor(Context context, Cursor c) {
        super(context, c);
        mContext = context;
        mLayoutInflater = LayoutInflater.from(context); 
    }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        View v = mLayoutInflater.inflate(R.layout.playerscoresrow, parent, false);
        return v;
    }

    /**
     * @author will
     * 
     * @param   v
     *          The view in which the elements we set up here will be displayed.
     * 
     * @param   context
     *          The running context where this ListView adapter will be active.
     * 
     * @param   c
     *          The Cursor containing the query results we will display.
     */

    @Override
    public void bindView(View v, Context context, Cursor c) {
        int player1Score = c.getInt(c.getColumnIndexOrThrow(DBAdaptor.KEY_PLAYER1_SCORE));
        int player2Score = c.getInt(c.getColumnIndexOrThrow(DBAdaptor.KEY_PLAYER2_SCORE));
        int player3Score = c.getInt(c.getColumnIndexOrThrow(DBAdaptor.KEY_PLAYER3_SCORE));
        int player4Score = c.getInt(c.getColumnIndexOrThrow(DBAdaptor.KEY_PLAYER4_SCORE));

        /**
         * Next set the title of the entry.
         */

        TextView tvwPlayer1Score = (TextView) v.findViewById(R.id.tvwPlayer1score);
        TextView tvwPlayer2Score = (TextView) v.findViewById(R.id.tvwPlayer2score);
        TextView tvwPlayer3Score = (TextView) v.findViewById(R.id.tvwPlayer3score);
        TextView tvwPlayer4Score = (TextView) v.findViewById(R.id.tvwPlayer4score);
        tvwPlayer1Score.setText(player1Score);
        tvwPlayer2Score.setText(player2Score);
        tvwPlayer3Score.setText(player3Score);
        tvwPlayer4Score.setText(player4Score);
    }


}

我的 XML：

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">

   <ListView android:id="@+id/android:list"
       android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
 </LinearLayout>


<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout>
<Table>
<TableRow>
<TextView android:id="@+id/tvwPlayer1score" xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>
<TextView android:id="@+id/tvwPlayer2score" xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>
<TextView android:id="@+id/tvwPlayer3score" xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>
<TextView android:id="@+id/tvwPlayer4score" xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>
</TableRow>
</Table>
</RelativeLayout>

最后，我使用它的代码是这样的：

private void showCurrentScores(){

    DBAdaptor dbAdaptor;
    Cursor scoresCursor;
    ScoresDisplayerAdaptor scoresDisplayerAdaptor;  

    dbAdaptor = new DBAdaptor(this);
    scoresCursor = dbAdaptor.getScores();

    startManagingCursor(scoresCursor);

    scoresDisplayerAdaptor = new ScoresDisplayerAdaptor(this,scoresCursor);

}

但我现在被困在最后一行之后该放什么了。

Answer 1

这里的第一个答案... Simple display of data from SQlite database 或 这里Custom listviews, 3 Strings per item?

嗯……还不错，但就像用猎枪杀死蚊子一样

您无需为此构建自己的适配器

只需使用 SimpleCursorAdapter

dbAdaptor = new DBAdaptor(this);
//!!!!remeber scroresCursor MUST have "_id" column
scoresCursor = dbAdaptor.getScores();
listView.setAdapter(new SimpleCursorAdapter(this, 
//this is itemrow.xml
R.layout.itemrow,
scoresCursor , 
//"from" this is array of columns 
new String[]{DBAdaptor.KEY_PLAYER1_SCORE, DBAdaptor.KEY_PLAYER2_SCORE, DBAdaptor.KEY_PLAYER3_SCORE, DBAdaptor.KEY_PLAYER4_SCORE},
//"to" next goes ids in itemrow.xml, values from "from" columns are mapped to "to" Views
new int[] {R.id.tvwPlayer1score, R.id.tvwPlayer2score, R.id.tvwPlayer3score, R.id.tvwPlayer4score }));

下一步：你能在活动列表视图（不是对话框）中显示这些数据吗？

编辑：

    Dialog dialog = new Dialog(this);
    dialog.setContentView(R.layout.custom_dialogus);
    ListView lv = (ListView)dialog.getWindow().findViewById(R.id.listView1);
            Cursor c = managedQuery(
            Uri.parse("content://selvin.ListSyncSample/List"),
            new String[] { "_id",  "Name",
                "Description", "CreatedDate"  }, null,
            null, "Name");
    lv.setAdapter(new SimpleCursorAdapter(this, R.layout.listrow, cursor, new String[] { "Name",
            "Description", "CreatedDate" }, new int[] {
            R.id.tName, R.id.tDescription, R.id.tCreatedDate }));
    dialog.setTitle("Custom Dialog");
    dialog.show();

itemrow.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="wrap_content"
    android:padding="6dip">
    <ImageView android:id="@+id/icon" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:layout_marginRight="6dip"
        android:src="@drawable/icon" android:layout_centerVertical="true" />
    <TextView android:id="@+id/tName" android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:layout_toRightOf="@id/icon"
        android:layout_alignParentRight="true" android:layout_alignParentTop="true"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:singleLine="true" android:ellipsize="marquee" />
    <TextView android:id="@+id/tDescription" android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:layout_toRightOf="@id/icon"
        android:layout_alignParentRight="true" android:layout_below="@id/tName" />
    <TextView android:id="@+id/tCreatedDate" android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:layout_toRightOf="@id/icon"
        android:layout_alignParentRight="true" android:layout_below="@id/tDescription"
        android:singleLine="true" android:ellipsize="marquee" />
</RelativeLayout>

custom_dialogus.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical">
    <ListView android:id="@+id/listView1" android:layout_width="fill_parent"
        android:layout_height="fill_parent"/>
</LinearLayout>

而不是 Cursor c = managedQuery ... 使用您的光标

Answer 2

您的活动在哪里？ Activity 就是将要显示的“屏幕”。