我有一个片段ArticleFragment
,它传递了一个Article
对象。通常显示在 Activity 中,ArticleFragment
但我想在 ListView 中重用片段。ListView 的每一行都应该包含一个ArticleFragment
. 我知道我可以使用getView()
适配器的方法自定义一行,但是显示的 UI 与ArticleFragment
一行非常相似,因此如果 UI 发生更改,必须在两个位置更新它会很烦人。
ArticleFragment.java
public class ArticleFragment extends SherlockFragment {
static final String ARTICLE_PARCEL_KEY = "parcelable_article";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
protected static ArticleFragment newInstance(Article article) {
ArticleFragment f = new ArticleFragment();
Bundle args = new Bundle(Article.class.getClassLoader());
args.putParcelable(ARTICLE_PARCEL_KEY, article);
f.setArguments(args);
return f;
}
Article getArticle() {
return getArguments().getParcelable(ARTICLE_PARCEL_KEY);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View layout = (View) inflater.inflate(R.layout.article, container, false);
ArticleImagesFragment imagesFragment = ArticleImagesFragment.newInstance(getArticle().getImages());
FragmentTransaction ft = getChildFragmentManager().beginTransaction();
ft.add(R.id.images_fragment_container, imagesFragment);
if (getActivity() instanceof ArticleActivity) {
DisqusCommentsFragment disqusFragment = DisqusCommentsFragment.newInstance(getArticle().getCommentsUrl());
ft.add(R.id.comments_fragment_container, disqusFragment);
}
ft.commit();
return layout;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
Article article = getArticle();
TextView kickerView = (TextView) view.findViewById(R.id.kicker);
kickerView.setText(article.getKicker().toUpperCase());
TextView titleView = (TextView) view.findViewById(R.id.title);
titleView.setText(article.getTitle());
String commentsText = "Jetzt kommentieren!";
if (article.getNumComments() == 1) {
commentsText = article.getNumComments().toString() + " Kommentar";
} else if (article.getNumComments() > 1) {
commentsText = article.getNumComments().toString() + " Kommentare";
}
TextView numCommentsView = (TextView) view.findViewById(R.id.num_comments);
numCommentsView.setText(commentsText);
TextView pubDateView = (TextView) view.findViewById(R.id.pub_date);
String dateText = new SimpleDateFormat("dd. MMMM, hh:mm").format(article.getPubDate());
pubDateView.setText(dateText);
TextView authorNameView = (TextView) view.findViewById(R.id.author_name);
authorNameView.setText(article.getAuthorName());
TextView articleTextView = (TextView) view.findViewById(R.id.text);
articleTextView.setText(Html.fromHtml(article.getHtmlContent()));
}
}
我注意到可以将自定义行布局传递给,ArrayAdapter
但这会再次重复显示文章 UI 的逻辑。相反,我更愿意将片段传递给适配器的构造函数并使用它来显示行。
是否有可能通过一个来实现这一点ArrayAdapter
?如果不是,那么在 ListView
中实现重用的正确路径是什么?ArticleFragment
谢谢你的帮助!