//Liest die Klausurenliste aus einer Datei
public async Task <Exams_Collection> readList()
{
try
{
string text = await fileIO.readText("exams.json");
Exams_Collection list = JsonConvert.DeserializeObject <Exams_Collection>(text);
return(list);
}
catch (Exception ex)
{
Exams_Collection nl = new Exams_Collection();
nl.list_data = "** E-01 **";
nl.list_title = "Fehler";
List <Exams_Item> li = new List <Exams_Item>();
Exams_Item xi = new Exams_Item();
xi.Name = "Aktualisierung notwendig";
xi.Place = "";
xi.Time = "";
xi.Extra = "";
xi.change = "Es sind keine Offlinedaten verfügbar. Zum Abrufen der Daten auf 'Aktualisieren' drücken.";
li.Add(xi);
nl.list = li;
return(nl);
}
}
public async Task <Exams_Collection> downloadList()
{
Exams_Collection ei = new Exams_Collection();
ei.list_data = "** E-02 **";
ei.list_title = "Fehler";
List <Exams_Item> li = new List <Exams_Item>(1000);
ei.list = li;
try
{
HttpClientHandler handler = new HttpClientHandler();
var cookieContainer = new CookieContainer();
handler.CookieContainer = cookieContainer;
HttpClient client = new HttpClient(handler);
HttpResponseMessage response = await client.GetAsync(new Uri("https://intranet.tuhh.de/stud/pruefung/index.php3"));
var htxt = await response.Content.ReadAsStringAsync();
HtmlAgilityPack.HtmlDocument htmlDoc = new HtmlAgilityPack.HtmlDocument();
htmlDoc.OptionFixNestedTags = true;
//HTML aus String laden
htmlDoc.LoadHtml(htxt);
if (htmlDoc.ParseErrors != null && htmlDoc.ParseErrors.Count() > 0)
{
}
else
{
foreach (HtmlNode cols in htmlDoc.DocumentNode.Descendants("h2"))
{
String rawString = WebTools.removeHTML(cols.InnerText);
Char delimiter = ':';
String[] substrings = rawString.Split(delimiter);
ei.list_title = substrings[1];
}
foreach (HtmlNode table in htmlDoc.DocumentNode.Descendants("tbody"))
{
foreach (HtmlNode row in table.Descendants("tr"))
{
List <string> facts = new List <string>();
foreach (HtmlNode cell in row.Descendants("td"))
{
facts.Add(cell.InnerHtml);
}
if (facts.Count >= 4)
{
Exams_Item x = new Exams_Item();
String blank = facts[2];
String[] split = blank.Split(new string[] { "<br>" }, StringSplitOptions.None);
x.Time = WebTools.removeHTML(facts[1]);
x.Name = WebTools.removeHTML(facts[0]);
x.Extra = WebTools.removeHTML(split[0]);
x.Note = WebTools.removeHTML(facts[3]);
if (split.Length > 1)
{
x.change = WebTools.removeHTML(split[1]);
}
else
{
x.change = "";
}
li.Add(x);
}
}
}
DateTime now = DateTime.Today;
String dateString = now.Day + "." + now.Month + "." + now.Year;
ei.list_data = dateString;
ei.list_time_download = DateTime.Today;
}
}
catch
{
}
return(ei);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetTheme(Resource.Style.MyTheme);
Window.AddFlags(WindowManagerFlags.DrawsSystemBarBackgrounds);
SetContentView(Resource.Layout.Form_Exams);
drawerLayout = FindViewById <DrawerLayout>(Resource.Id.drawer_layout);
toolbar = FindViewById <Android.Support.V7.Widget.Toolbar>(Resource.Id.toolbar);
SetSupportActionBar(toolbar);
Android.Support.V7.App.ActionBar actionBar = this.SupportActionBar;
var navigationView = FindViewById <NavigationView>(Resource.Id.nav_view);
navigationView.NavigationItemSelected += NavigationView_NavigationItemSelected;
navigationView.SetCheckedItem(Resource.Id.nav_exams);
var drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, Resource.String.open_drawer, Resource.String.close_drawer);
drawerLayout.SetDrawerListener(drawerToggle);
drawerToggle.SyncState();
listView = FindViewById <ListView>(Resource.Id.List);
Campus_Harburg_Core.Exams_Item xi = new Campus_Harburg_Core.Exams_Item();
xi.Name = "Laden...";
xi.Note = "Daten werden verarbeitet";
xi.Time = "";
Campus_Harburg_Core.Exams_P exa = new Campus_Harburg_Core.Exams_P();
ep.init(fio);
Exams_Collection exi = ep.getDisplayList();
exi.list.Sort((s1, s2) => s1.Name.CompareTo(s2.Name));
tableItems.Add(xi);
listView.Adapter = new ListAdapter_Exams(this, exi.list);
int dayDif = (DateTime.Now - exi.list_time_download).Days;
if (dayDif >= 30 && exi.list.Count >= 2)
{
Android.Support.V7.App.AlertDialog.Builder alert = new Android.Support.V7.App.AlertDialog.Builder(this);
alert.SetTitle("Info");
alert.SetMessage(TextContainer.Exams_TooOld);
alert.SetPositiveButton("Ja", (senderAlert, args) =>
{
update();
});
alert.SetNegativeButton("Nein", (senderAlert, args) =>
{
});
Dialog dialog = alert.Create();
dialog.Show();
}
else if (exi.list.Count < 2)
{
Android.Support.V7.App.AlertDialog.Builder alert = new Android.Support.V7.App.AlertDialog.Builder(this);
alert.SetTitle("Info");
alert.SetMessage(TextContainer.Exams_Empty);
alert.SetPositiveButton("Ja", (senderAlert, args) =>
{
update();
});
alert.SetNegativeButton("Nein", (senderAlert, args) =>
{
});
Dialog dialog = alert.Create();
dialog.Show();
}
}