private void SetupFloatingSearch()
{
mSearchView.QueryChange += async(sender, e) =>
{
Console.WriteLine("QueryChange");
if (!string.IsNullOrEmpty(e.OldQuery) && string.IsNullOrEmpty(e.NewQuery))
{
mSearchView.ClearSuggestions();
}
else
{
// this shows the top left circular progress
// you can call it where ever you want, but
// it makes sense to do it when loading something in
// the background.
mSearchView.ShowProgress();
// simulates a query call to a data source
// with a new query.
var results = await DataHelper.FindSuggestionsAsync(Activity, e.NewQuery, 5, FIND_SUGGESTION_SIMULATED_DELAY);
// this will swap the data and
// render the collapse/expand animations as necessary
mSearchView.SwapSuggestions(results);
// let the users know that the background
// process has completed
mSearchView.HideProgress();
}
};
mSearchView.SearchAction += async(sender, e) =>
{
Console.WriteLine("SearchAction");
mLastQuery = e.CurrentQuery;
var results = await DataHelper.FindColorsAsync(Activity, e.CurrentQuery);
mSearchResultsAdapter.SwapData(results);
};
mSearchView.SuggestionClicked += async(sender, e) =>
{
Console.WriteLine("SuggestionClicked");
mLastQuery = e.SearchSuggestion.GetBody();
var results = await DataHelper.FindColorsAsync(Activity, e.SearchSuggestion.GetBody());
mSearchResultsAdapter.SwapData(results);
};
mSearchView.Focus += async(sender, e) =>
{
Console.WriteLine("Focus");
mSearchView.SwapSuggestions(await DataHelper.GetHistoryAsync(Activity, 3));
};
mSearchView.FocusCleared += (sender, e) =>
{
Console.WriteLine("FocusCleared");
// set the title of the bar so that when focus is returned a new query begins
mSearchView.SetSearchBarTitle(mLastQuery);
// you can also set setSearchText(...) to make keep the query there when not focused and when focus returns
// mSearchView.SetSearchText(searchSuggestion.getBody());
};
// handle menu clicks the same way as you would in a regular activity
mSearchView.MenuItemClick += (sender, e) =>
{
Console.WriteLine("MenuItemClick");
if (e.MenuItem.ItemId == Resource.Id.action_change_colors)
{
mIsDarkSearchTheme = true;
// demonstrate setting colors for items
mSearchView.SetBackgroundColor(Color.ParseColor("#787878"));
mSearchView.SetViewTextColor(Color.ParseColor("#e9e9e9"));
mSearchView.SetHintTextColor(Color.ParseColor("#e9e9e9"));
mSearchView.SetActionMenuOverflowColor(Color.ParseColor("#e9e9e9"));
mSearchView.SetMenuItemIconColor(Color.ParseColor("#e9e9e9"));
mSearchView.SetLeftActionIconColor(Color.ParseColor("#e9e9e9"));
mSearchView.SetClearBtnColor(Color.ParseColor("#e9e9e9"));
mSearchView.SetDividerColor(Color.ParseColor("#BEBEBE"));
mSearchView.SetLeftActionIconColor(Color.ParseColor("#e9e9e9"));
}
else
{
// just print action
Toast.MakeText(Activity.ApplicationContext, e.MenuItem.TitleFormatted.ToString(), ToastLength.Short).Show();
}
};
// use this listener to listen to menu clicks when app:floatingSearch_leftAction="showHome"
mSearchView.HomeActionClick += (sender, e) =>
{
Console.WriteLine("HomeActionClick");
};
// Here you have access to the left icon and the text of a given suggestion
// item after as it is bound to the suggestion list. You can utilize this
// callback to change some properties of the left icon and the text. For example, you
// can load the left icon images using your favorite image loading library, or change text color.
//
// Important:
// Keep in mind that the suggestion list is a RecyclerView, so views are reused for different
// items in the list.
mSearchView.BindSuggestion += (sender, e) =>
{
var colorSuggestion = (ColorSuggestion)e.Item;
var textColor = mIsDarkSearchTheme ? "#ffffff" : "#000000";
var textLight = mIsDarkSearchTheme ? "#bfbfbf" : "#787878";
if (colorSuggestion.IsHistory)
{
e.LeftIcon.SetImageDrawable(ResourcesCompat.GetDrawable(Resources, Resource.Drawable.ic_history_black_24dp, null));
Util.SetIconColor(e.LeftIcon, Color.ParseColor(textColor));
e.LeftIcon.Alpha = 0.36f;
}
else
{
e.LeftIcon.Alpha = 0.0f;
e.LeftIcon.SetImageDrawable(null);
}
e.TextView.SetTextColor(Color.ParseColor(textColor));
var text = colorSuggestion.GetBody();
if (string.IsNullOrEmpty(mSearchView.Query))
{
e.TextView.Text = text;
}
else
{
text = text.Replace(mSearchView.Query, $"<font color=\"{textLight}\">{mSearchView.Query}</font>");
e.TextView.TextFormatted = Html.FromHtml(text);
}
};
// listen for when suggestion list expands/shrinks in order to move down/up the
// search results list
mSearchView.SuggestionsListHeightChanged += (sender, e) =>
{
mSearchResultsList.TranslationY = e.NewHeight;
};
// When the user types some text into the search field, a clear button (and 'x' to the
// right) of the search text is shown.
//
// This listener provides a callback for when this button is clicked.
mSearchView.ClearSearchAction += (sender, e) =>
{
Console.WriteLine("ClearSearchAction");
};
}