Question

我想将图像添加到标题元素中。我按照this教程成功添加了图像。它使用ListRow元素，与ListRow完美配合。

但是，当我使用ListRow更改PageRow元素时，它不会在标题之间导航。以下是一些重要的变化。可能是什么原因？

IconHeaderItemPresenter.java

@Override
public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object o) {
    IconHeaderItem iconHeaderItem = (IconHeaderItem)((PageRow)o).getHeaderItem();
    View rootView = viewHolder.view;
...
}

MainFragment.java

public void createRows(){

    IconHeaderItem headerItem1 = new IconHeaderItem(1, getString(R.string.header_history), R.drawable.header_images);
    PageRow pageRow1 = new PageRow(headerItem1);
    mRowsAdapter.add(pageRow1);

    IconHeaderItem headerItem2 = new IconHeaderItem(2, getString(R.string.header_recommendations), R.drawable.header_musics);
    PageRow pageRow2 = new PageRow(headerItem2);
    mRowsAdapter.add(pageRow2);

    IconHeaderItem headerItem3 = new IconHeaderItem(3, getString(R.string.header_news), R.drawable.header_videos);
    PageRow pageRow3 = new PageRow(headerItem3);
    mRowsAdapter.add(pageRow3);

    IconHeaderItem headerItem4 = new IconHeaderItem(4, getString(R.string.header_notifications), R.drawable.header_settings);
    PageRow pageRow4 = new PageRow(headerItem4);
    mRowsAdapter.add(pageRow4);
}

private static class PageRowFragmentFactory extends BrowseFragment.FragmentFactory {
    private final BackgroundManager mBackgroundManager;

    PageRowFragmentFactory(BackgroundManager backgroundManager) {
        this.mBackgroundManager = backgroundManager;
    }

    @Override
    public Fragment createFragment(Object rowObj) {
        Row row = (Row)rowObj;
        mBackgroundManager.setDrawable(null);
        //id for news fragment
        if (row.getHeaderItem().getId() == 3) {
            return new SampleFragmentA();
        } else {
            return new SampleFragmentB();
        }

    }
}

Answer 1

添加这两行

view.setFocusable(true);
view.setFocusableInTouchMode(true);

到扩展RowHeaderPresenter的onCreateViewHolder

Answer 2

将{"kind": "person", "fullName": "John Doe", "age": 22, "gender": "Male", "citiesLived": [{ "place": "Seattle", "numberOfYears": 5}, {"place": "Stockholm", "numberOfYears": 6}]} {"kind": "person", "fullName": "Jane Austen", "age": 24, "gender": "Female", "citiesLived": [{"place": "Los Angeles", "numberOfYears": 2}, {"place": "Tokyo", "numberOfYears": 2}]}添加到扩展RowHeaderPresenter的onCreateViewHolder

使用图像视图在PageRow元素之间导航

2 个答案: