I am developing a Windows Phone App 8.1 using a third party DrawerLayout. My problem is when I have design the page using draweralayout. I need to pass the same layout to each other pages in my application. but when i use bold Frame.navigate(typeof(Page1)); the application is crashed. I am unable to debug the problem. please help!!!
My Xaml Code is
<Grid x:Name="Rootlayout">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<!-- title bar-->
<Grid x:Name="TitleBar" Height="50" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Background="SkyBlue">
<Image Source="/Assets/fs-logo.png" Height="50" HorizontalAlignment="Left" Margin="10,0,0,0"/>
</Grid>
<!--Drawer Layout-->
<drawer:DrawerLayout x:Name="DrawerLayout" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2">
<!--Main Layout-->
<Grid x:Name="mainLayout" Background="White" >
<ScrollViewer>
<Grid Margin="5">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Image x:Name="mainImage" Grid.Row="0" Source="{Binding }"></Image>
<GridView x:Name="grdView" Grid.Row="1" ItemsSource="{Binding }" ItemContainerStyle="{StaticResource GridViewItemContainer}" Tapped="grdView_Tapped" >
<GridView.ItemTemplate>
<DataTemplate>
<Border BorderThickness="1" BorderBrush="Blue">
<Grid Height="{Binding Size}"
Width="{Binding Size}">
<Image Height="120" Width="150" Source="{Binding sImageURL}" Stretch="Fill">
</Image>
<TextBlock Text="{Binding Name}" HorizontalAlignment="Center" VerticalAlignment="Bottom" Foreground="Black" FontSize="18"/>
</Grid>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid Orientation="Horizontal"></ItemsWrapGrid>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
</Grid>
</ScrollViewer>
</Grid>
<!--Drawer Layout-->
<Grid x:Name="listFragment" FlowDirection="LeftToRight" >
<ListView x:Name="listItem" SelectionChanged="listItem_SelectionChanged">
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}" FontSize="20" Foreground="Black" Margin="10" VerticalAlignment="Center" HorizontalAlignment="Left"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
</drawer:DrawerLayout>
<Image Grid.Row="1" Grid.Column="0" Height="50" Width="50" Source="/Assets/appbar.right.png" Tapped="chevlon_Tapped">
</Image>
</Grid>
My MainPage.cs
public sealed partial class MainPage : Page
{
private NavigationHelper navigationHelper;
private ObservableDictionary defaultViewModel = new ObservableDictionary();
List<Services.Company> companyData;
List<Services.Category> categoryData;
public MainPage()
{
this.InitializeComponent();
Loaded += MainPage_Loaded;
this.navigationHelper = new NavigationHelper(this);
this.navigationHelper.LoadState += this.NavigationHelper_LoadState;
this.navigationHelper.SaveState += this.NavigationHelper_SaveState;
this.NavigationCacheMode = NavigationCacheMode.Required;
}
async void MainPage_Loaded(object sender, RoutedEventArgs e)
{
await Windows.UI.ViewManagement.StatusBar.GetForCurrentView().HideAsync();
// SetGridViewItemSize();
//throw new NotImplementedException();
}
/// <summary>
/// Gets the <see cref="NavigationHelper"/> associated with this <see cref="Page"/>.
/// </summary>
public NavigationHelper NavigationHelper
{
get { return this.navigationHelper; }
}
/// <summary>
/// Gets the view model for this <see cref="Page"/>.
/// This can be changed to a strongly typed view model.
/// </summary>
public ObservableDictionary DefaultViewModel
{
get { return this.defaultViewModel; }
}
private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
if (e.PageState != null)
{
// this.DefaultViewModel["MainPage"] = (MainPage)e.PageState["MainPage"];
// Restore scroll offset
var index = (int)e.PageState["FirstVisibleItemIndex"];
var container = grdView.ContainerFromIndex(index);
grdView.ScrollIntoView(container);
}
else
{
//Load Data for the First time
DrawerLayout.InitializeDrawerLayout();
var company = await Services.CompCatInfo.GetCompaniesAsync(App.compId);
companyData = company.ToList();
if (companyData.Count > 0)
{
mainImage.Source = new BitmapImage(new Uri(companyData.ElementAt(0).LogoImgUrl, UriKind.Absolute));
}
var category = await Services.CompCatInfo.GetCategoriesAsync(App.compId);
categoryData = category.ToList();
SetGridViewItemSize();
if (categoryData.Count > 0)
{
grdView.ItemsSource = categoryData;
}
}
}
private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)
{
var isp = (ItemsWrapGrid)grdView.ItemsPanelRoot;
int firstVisibleItem = isp.FirstVisibleIndex;
e.PageState["FirstVisibleItemIndex"] = firstVisibleItem;
// e.PageState["HomePage"] = this.Frame.CurrentSourcePageType;
// This must be serializable according to the SuspensionManager
//e.PageState["MainPage"] = this.DefaultViewModel["MainPage"];
}
private void SetGridViewItemSize()
{
//var viewModel = (DataContext as ViewModel1);
var width = Math.Truncate((grdView.ActualWidth - 10));
var height = Math.Truncate((grdView.ActualHeight - 10));
// total left + right margin for each tile (ItemContainerStyle)
var margin = 10;
var twoColumnGridPortrait = (width / 2) - margin;
// var threeColumnGridPortrait = (width / 3) - margin;
var twoColumnGridLandscape = (height / 2) - margin;
var threeColumnGridLandscape = (height / 3) - margin;
double portrait;
double landscape;
portrait = twoColumnGridPortrait;
landscape = threeColumnGridLandscape;
Application.Current.Resources["GridViewItemPortrait"] = Math.Round(portrait, 2);
Application.Current.Resources["GridViewItemLandscape"] = Math.Round(landscape, 2);
if (DisplayInformation.GetForCurrentView().CurrentOrientation == DisplayOrientations.Portrait)
{
Measure((double)Application.Current.Resources["GridViewItemPortrait"]);
}
else
{
Measure((double)Application.Current.Resources["GridViewItemLandscape"]);
}
// throw new NotImplementedException();
}
private void Measure(double size)
{
for (int i = 0; i < categoryData.Count; i++)
{
var item = categoryData[i];
item.Size = size;
}
//throw new NotImplementedException();
}
#region NavigationHelper registration
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached.
/// This parameter is typically used to configure the page.</param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
this.navigationHelper.OnNavigatedTo(e);
//if (e.NavigationMode == NavigationMode.New)
//{
// DrawerLayout.InitializeDrawerLayout();
// var company = await Services.CompCatInfo.GetCompaniesAsync(App.compId);
// companyData = company.ToList();
// if (companyData.Count > 0)
// {
// mainImage.Source = new BitmapImage(new Uri(companyData.ElementAt(0).LogoImgUrl, UriKind.Absolute));
// }
// var category = await Services.CompCatInfo.GetCategoriesAsync(App.compId);
// categoryData = category.ToList();
// SetGridViewItemSize();
// grdView.ItemsSource = categoryData;
//}
//else
//{
// // this.Frame.Content = e.Content;
//}
// TODO: Prepare page for display here.
// TODO: If your application contains multiple pages, ensure that you are
// handling the hardware Back button by registering for the
// Windows.Phone.UI.Input.HardwareButtons.BackPressed event.
// If you are using the NavigationHelper provided by some templates,
// this event is handled for you.
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
this.navigationHelper.OnNavigatedFrom(e);
}
#endregion
private void chevlon_Tapped(object sender, TappedRoutedEventArgs e)
{
string[] list = new string[] { "Services","Solutions","Technologies","About Us"};
listItem.ItemsSource = list.ToList();
if(DrawerLayout.IsDrawerOpen)
{
DrawerLayout.CloseDrawer();
}
else
{
DrawerLayout.OpenDrawer();
}
}
private void listItem_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (listItem.SelectedItem != null)
{
var selecteditem = listItem.SelectedValue as string;
// DetailsTxtBlck.Text = "SelectedItem is: " + selecteditem;
DrawerLayout.CloseDrawer();
listItem.SelectedItem = null;
}
}
private void grdView_Tapped(object sender, TappedRoutedEventArgs e)
{
DrawerLayout.CloseDrawer();
if(e.OriginalSource.GetType().ToString()=="Windows.UI.Xaml.Controls.Image"||e.OriginalSource.GetType().ToString()=="Windows.UI.Xaml.Controls.TextBlock")
{
var catObj = (sender as GridView).SelectedItem as Services.Category;
////Frame rootFrame = Window.Current.Content as Frame;
////rootFrame.Navigate(typeof(Page2),catObj);
Frame.Navigate(typeof(Page2),catObj);
}
}
}
Aucun commentaire:
Enregistrer un commentaire