12-notiXamarin - fragmentos.txt

gist fragmentos

// NewsListActivity
public class NewsListActivity : Activity
    {
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            // Create your application here
            SetContentView(Resource.Layout.NewsList);

            var transaction = FragmentManager.BeginTransaction();
            transaction.Add(Resource.Id.newsListFragmentContainer, new AllNewsListFragment());
            transaction.Commit();
        }
    }

// AllNewsListFragment

public class AllNewsListFragment: Fragment
    {
        private NewsService _newsService;
        private List<News> _news;
        private ListView _newsListView;

        public AllNewsListFragment()
        {
            _newsService = new NewsService();
            _news = new List<News>();
        }

        public override void OnActivityCreated(Bundle savedInstanceState)
        {
            base.OnActivityCreated(savedInstanceState);

            if (!_news.Any())
            {
                _news = _newsService.GetNews();
            }

            SetupViews();

            SetupEvents();

            _newsListView.Adapter = new NewsListAdapter(Activity, _news);

        }

        protected void SetupViews()
        {
            _newsListView = View.FindViewById<ListView>(Resource.Id.newsListView);
        }

        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            return inflater.Inflate(Resource.Layout.NewsListFragment, container, false);
        }

        protected void SetupEvents()
        {
            _newsListView.ItemClick += NewsListView_ItemClick;
        }

        private void NewsListView_ItemClick(object sender, AdapterView.ItemClickEventArgs e)
        {
            var intent = new Intent(Activity, typeof(MainActivity));
            var id = (int)e.Id;
            intent.PutExtra(MainActivity.KEY_ID, id);
            StartActivity(intent);
        }
    }

// newsList.axml

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

// newsListFragment.axml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:minWidth="25px"
    android:minHeight="25px">
    <ListView
        android:minWidth="25px"
        android:minHeight="25px"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/newsListView" />
</LinearLayout>