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我已尽力按照developer.android.com上的指示进行操作，但似乎我在某个地方出现了一个我无法弄清楚的愚蠢错误。

在连续记录之后，我意识到没有任何方法在我的 RemoteViewsFactory 实现中运行，它（尝试）使用来自内容提供程序光标的数据在小部件中设置 ListView。

远程视图工厂：

private Context context;
private int appWidgetId;
private Cursor cursor;

public FootballScoreFactory(Context context, Intent intent){
    this.context = context;
    appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);

}

@Override
public void onDataSetChanged() {

    if(cursor != null){
        cursor.close();
    }

    String[] date = new String[1];
    Date filterDate = new Date(System.currentTimeMillis());
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    date[0] = format.format(filterDate);
    try {
        cursor = context.getContentResolver().query(
                Uri.parse([content uri here, tested, returns the data]),
                null,
                null,
                date,
                null
        );
    } catch (Exception e){
        e.printStackTrace();
    }

}
@Override
public RemoteViews getViewAt(int position) {

    String leagueName, home, away, homeGoal, awayGoal;
    leagueName = home = away = homeGoal = awayGoal = "";

    if(cursor.moveToPosition(position)){
        leagueName = cursor.getString(cursor.getColumnIndex(DatabaseContract.scores_table.LEAGUE_COL));
        home = cursor.getString(cursor.getColumnIndex(DatabaseContract.scores_table.HOME_COL));
        away = cursor.getString(cursor.getColumnIndex(DatabaseContract.scores_table.AWAY_COL));
        homeGoal = String.valueOf(cursor.getInt(cursor.getColumnIndex(DatabaseContract.scores_table.HOME_GOALS_COL)));
        awayGoal = String.valueOf(cursor.getInt(cursor.getColumnIndex(DatabaseContract.scores_table.AWAY_GOALS_COL)));
    }

    RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.widget_list_item);
    rv.setTextViewText(R.id.league_name, leagueName);
    rv.setTextViewText(R.id.home, home);
    rv.setTextViewText(R.id.away, away);
    rv.setTextViewText(R.id.home_score, homeGoal.contentEquals("-1")? "-" : homeGoal);
    rv.setTextViewText(R.id.away_score, awayGoal.contentEquals("-1")? "-" : awayGoal);
    return rv;
}

远程视图服务：

@Override
public RemoteViewsFactory onGetViewFactory(Intent intent) {
    return new FootballScoreFactory(getApplicationContext(), intent);
}

应用小部件提供者：

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    // There may be multiple widgets active, so update all of them
    for (int appWidgetId : appWidgetIds) {
        Intent intent = new Intent(context, FootballScoreService.class);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));

        RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.football_score);
        rv.setRemoteAdapter(appWidgetId, R.id.widget_list_view, intent);
        rv.setEmptyView(R.id.widget_list_view, R.id.empty_view);

        appWidgetManager.updateAppWidget(appWidgetId, rv);
    }

    super.onUpdate(context, appWidgetManager, appWidgetIds);

}

关于我需要做什么以确保更新视图的任何帮助都会很棒。如果它有帮助，它rv.setEmptyView(...);似乎一直在工作。

最让我心碎的是，当我以为我没有在应用程序清单文件中绑定视图时，但看起来我确实做到了。:(

<service android:name=".FootballScoreService"
        android:permission="android.permission.BIND_REMOTEVIEWS" />
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1 回答 1

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所以，事实证明我发现了自己的问题。这就像我的 RemoteViewsFactory 没有为 getViewTypeCount() 返回正确的值一样简单。我一开始把它放在0。当我将其更改为 1 时，它起作用了。

继续，笑我。我做到了。希望这可以帮助一些穷人唯一在某些时候像我一样的灵魂。

如果我再次偶然发现这一点，我不会感到惊讶，哈哈。

于 2016-02-28T02:07:06.110 回答