/*
* public BrowseActivity()
* {
* }
*
* public BrowseActivity(IntPtr javaReference, Android.Runtime.JniHandleOwnership transfer) : base(javaReference, transfer)
* {
* }
*/
protected override void OnCreate(Android.OS.Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.Browse);
var weakThis = new WeakReference <BrowseActivity>(this);
var listView = FindViewById <ListView>(Resource.Id.listView);
var button = FindViewById <Button>(Resource.Id.button);
Observable.FromEventPattern(button, nameof(button.Click))
.SetCommand(ViewModel.NavigateToNew);
Observable.FromEventPattern <AdapterView.ItemClickEventArgs>(listView, nameof(listView.ItemClick))
.Select(arg => weakThis.Resolve()?.Items[arg.EventArgs.Position])
.SetCommand(ViewModel.NavigateToDetail);
var adapter = new ListAdapter <Models.Item>(Items, (row, item) =>
{
var strongThis = weakThis.Resolve();
if (strongThis == null)
{
return(null);
}
var view = strongThis.LayoutInflater.Inflate(Resource.Layout.ListItem_Browse, null);
var holder = new ViewHolder
{
TitleTextView = view.FindViewById <TextView>(Resource.Id.text_title),
DescriptionTextView = view.FindViewById <TextView>(Resource.Id.text_description)
};
view.Tag = holder;
return(view);
}, (row, item, view) =>
{
var holder = view.Tag as ViewHolder;
holder.TitleTextView.Text = item.Title;
holder.DescriptionTextView.Text = item.Description;
});
listView.Adapter = adapter;
ViewModel.Items.Where(v => v != null).Subscribe(items =>
{
var strongThis = weakThis.Resolve();
if (strongThis == null)
{
return;
}
strongThis.Items.Clear();
strongThis.Items.AddRange(items);
adapter.NotifyDataSetChanged();
});
}
public static void Use <T>(this WeakReference <T> reference, Action <T> action)
where T : class
{
var val = reference?.Resolve();
if (val == null)
{
return;
}
action(val);
}
