Android TV RowsFragment - 无法禁用行调光效果

Question

我有一个扩展 RowsFragment 的 fragment ，无论我尝试什么，我都无法禁用未选中行的调光效果(第一张图片)。

Can't disable the dimming of unselected rows

这是我的代码:

public class MainFragment extends RowsFragment {
private static final String TAG = MainFragment.class.getSimpleName();

private ArrayObjectAdapter mRowsAdapter;
private static final int GRID_ITEM_WIDTH = 300;
private static final int GRID_ITEM_HEIGHT = 200;

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    Log.i(TAG, "onActivityCreated");
    super.onActivityCreated(savedInstanceState);

    loadRows();

}

private void loadRows() {
    mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter(FocusHighlight.ZOOM_FACTOR_LARGE, false));


    HeaderItem cardPresenterHeader = new HeaderItem(1, "CardPresenter");
    CardPresenter cardPresenter = new CardPresenter();
    ArrayObjectAdapter cardRowAdapter = new ArrayObjectAdapter(cardPresenter);


    for(int i=0; i<10; i++) {
        Movie movie = new Movie();
        movie.setTitle("title" + i);
        movie.setStudio("studio" + i);
        cardRowAdapter.add(movie);
    }

    mRowsAdapter.add(new ListRow(cardPresenterHeader, cardRowAdapter));
    mRowsAdapter.add(new ListRow(cardPresenterHeader, cardRowAdapter));

    setAdapter(mRowsAdapter);

}

无论我尝试什么更改或组合(使用 useFocusDimmer 标志，尝试使用 BrowseFragment 等)我都无法获得我正在寻找的结果。

我最接近的是更改为 VerticalGridFragment 和 Presenter，但缺少此功能，它只类似于我正在尝试完成的(第二张图片)。

Example of how I want it to look

提前致谢

Answer 1

您必须使用 RowsFragment连同 RowPresenter子类。在 RowPresenter 子类中，您可以定义自定义选择动画或尝试调用 setSelectEffectEnabled .

文档摘录:

When a user scrolls through rows, a fragment will initiate animation and call setSelectLevel(Presenter.ViewHolder, float) with float value between 0 and 1. By default, the RowPresenter draws a dim overlay on top of the row view for views that are not selected. Subclasses may override this default effect by having isUsingDefaultSelectEffect() return false and overriding onSelectLevelChanged(ViewHolder) to apply a different selection effect.

Call setSelectEffectEnabled(boolean) to enable/disable the select effect, This will not only enable/disable the default dim effect but also subclasses must respect this flag as well.