public LoginPage()
{
InitializeComponent();
btnLogin.Clicked += OnLoginClicked;
btnSetting.Clicked += (sender, e) =>
{
Navigation.PushAsync(new ElsaSettingPage());
};
onLoading(false);
NavigationPage.SetHasNavigationBar(this, false);
if (LocalPreferences.IsPropertyExists("database"))
{
SettingVariable.Database = LocalPreferences.LoadApplicationProperty <string>("database");
}
if (LocalPreferences.IsPropertyExists("instance"))
{
SettingVariable.Instance = LocalPreferences.LoadApplicationProperty <string>("instance");
}
Debug.WriteLine("database instance" + SettingVariable.Database + " " + SettingVariable.Instance);
}
bool isLoggedIn()
{
if (LocalPreferences.IsPropertyExists("isLoggedIn"))
{
return(LocalPreferences.LoadApplicationProperty <bool>("isLoggedIn"));
}
return(false);
}
private async void onLogout()
{
var answer = await DisplayAlert("Exit", "Do you want to exit ALTiUS Dashboard?", "Yes", "No");
if (answer)
{
await LocalPreferences.SaveApplicationProperty <bool>("isLoggedIn", false);
NavigationPage page = new NavigationPage(new LoginPage());
Xamarin.Forms.Application.Current.MainPage = page;
}
IsPresented = false;
}
async void onSaveClicked(object sender, EventArgs e)
{
string database = entryDatabase.Text;
string instance = entryInstance.Text;
await LocalPreferences.SaveApplicationProperty <string>(KEY_DB, database);
await LocalPreferences.SaveApplicationProperty <string>(KEY_INS, instance);
SettingVariable.Database = database;
SettingVariable.Instance = instance;
await DisplayAlert("Info", "Successfully saved", "OK");
}
protected override async void OnAppearing()
{
if (isLoggedIn())
{
string usr = LocalPreferences.LoadApplicationProperty <string>("username");
string pwd = LocalPreferences.LoadApplicationProperty <string>("password");
entryUsername.Text = usr;
entryPassword.Text = pwd;
onLoading(true);
bool valid = await Task.Run(() => validUser(usr, pwd));
if (!valid)
{
await DisplayAlert("Login failed", "Please check your username or password", "OK");
onLoading(false);
return;
}
loggingIn(usr, pwd);
}
}
void loadSavedSettings()
{
string database = "";
if (LocalPreferences.IsPropertyExists(KEY_DB))
{
database = LocalPreferences.LoadApplicationProperty <string>(KEY_DB);
}
string instance = "";
if (LocalPreferences.IsPropertyExists(KEY_INS))
{
instance = LocalPreferences.LoadApplicationProperty <string>(KEY_INS);
}
entryDatabase.Text = database;
entryInstance.Text = instance;
SettingVariable.Database = database;
SettingVariable.Instance = instance;
}
async Task <bool> validUser(string username, string password)
{
SettingVariable.Username = username;
SettingVariable.Password = password;
DependencyService.Get <IDbDataFetcher>().reloadConnectionString();
string query = "select kode,nama,email,password from staff where email = '" + username + "'";
Debug.WriteLine(query);
var list = DependencyService.Get <IDbDataFetcher>().getUser(query);
if (list != null && list.Count > 0)
{
await LocalPreferences.SaveApplicationProperty <bool>("isLoggedIn", true);
await LocalPreferences.SaveApplicationProperty <string>("username", username);
await LocalPreferences.SaveApplicationProperty <string>("password", password);
return(true);
}
return(false);
}