// Handle DataRequested event and provide DataPackage
public async void OnShareDataRequested(DataTransferManager sender, DataRequestedEventArgs args)
{
var request = args.Request;
var deferral = args.Request.GetDeferral();
if (shareItem.imgName != "" && shareItem.imgName != null)
{
var file = await ApplicationData.Current.LocalFolder.GetFileAsync(shareItem.imgName);
IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read);
var picStream = RandomAccessStreamReference.CreateFromStream(fileStream);
request.Data.SetBitmap(picStream);
}
else
{
var picStream = RandomAccessStreamReference.CreateFromUri(new Uri("ms-appx:///Assets/pic_6.jpg"));
request.Data.SetBitmap(picStream);
}
request.Data.Properties.Title = shareItem.Title;
request.Data.Properties.Description = "A share of Todo";
request.Data.SetText(shareItem.Description);
shareItem = null;
deferral.Complete();
}
private void ShareItem(object sender, RoutedEventArgs e)
{
var item = (sender as FrameworkElement).DataContext as Models.TodoItem;
shareItem = item;
DataTransferManager.ShowShareUI();
}
private void CreateButton_Click(object sender, RoutedEventArgs e)
{
string Message = "";
if (titleText.Text == "")
{
Message += "请输入标题\n";
}
if (detailText.Text == "")
{
Message += "请输入内容详情\n";
}
if (DatePicker.Date < DateTimeOffset.Now.LocalDateTime.AddDays(-1))
{
Message += "请选择正确的时间";
}
if (Message == "" && (this.ViewModel == null))
{
MainPage.allItem.AddTodoItem(pic.Source as BitmapImage, MySlider.Value, GetImage.getPicClass.imgName, titleText.Text, detailText.Text, DatePicker.Date);
Message = "创建成功!";
GetImage.getPicClass.imgName = "";
Frame rootFrame = Window.Current.Content as Frame;
rootFrame.Navigate(typeof(MainPage));
}
else if (Message == "")
{
MainPage.allItem.UpdateTodoItem("", pic.Source as BitmapImage, MySlider.Value, GetImage.getPicClass.imgName, titleText.Text, detailText.Text, DatePicker.Date, this.ViewModel.isChecked);
this.ViewModel = null;
Message = "更新成功!";
GetImage.getPicClass.imgName = "";
Frame rootFrame = Window.Current.Content as Frame;
rootFrame.Navigate(typeof(MainPage));
}
var msgbox = new MessageDialog(Message);
var result = msgbox.ShowAsync();
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
if (e.NavigationMode == NavigationMode.New)
{
//if this is a new navigation, this is a fresh lauch so we can
//discard any saved state
ApplicationData.Current.LocalSettings.Values.Remove("NewPage");
this.ViewModel = MainPage.allItem.selectedItem;
if (this.ViewModel != null)
{
DeleteAppBarButton.Visibility = Visibility.Visible;
MySlider.Value = this.ViewModel.picSize;
titleText.Text = this.ViewModel.Title;;
detailText.Text = this.ViewModel.Description;
DatePicker.Date = this.ViewModel.ItemDate;
pic.Source = this.ViewModel.image;
createButton.Content = "Update";
}
}
else
{
//try to restore state if any, in case we were terminated
if (ApplicationData.Current.LocalSettings.Values.ContainsKey("NewPage"))
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
var composite = ApplicationData.Current.LocalSettings.Values["NewPage"] as ApplicationDataCompositeValue;
MySlider.Value = (double)composite["picSize"];
titleText.Text = (string)composite["title"];
detailText.Text = (string)composite["detail"];
DatePicker.Date = (DateTimeOffset)composite["date"];
GetImage.getPicClass.imgName = (string)composite["image"];
string isSelectedId = (string)composite["isSelectedId"];
if (isSelectedId != null)
{
createButton.Content = "Update";
foreach (var item in MainPage.allItem.AllItems)
{
if (item.id == isSelectedId)
{
MainPage.allItem.selectedItem = this.ViewModel = item;
}
}
DeleteAppBarButton.Visibility = Visibility.Visible;
}
if (GetImage.getPicClass.imgName == "" || GetImage.getPicClass.imgName == null)
{
pic.Source = new BitmapImage(new Uri("ms-appx:///Assets/pic_6.jpg"));
}
else
{
var file = await ApplicationData.Current.LocalFolder.GetFileAsync(GetImage.getPicClass.imgName);
IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read);
BitmapImage bitmapImage = new BitmapImage();
await bitmapImage.SetSourceAsync(fileStream);
pic.Source = bitmapImage;
}
//we have done it, so remove it
ApplicationData.Current.LocalSettings.Values.Remove("NewPage");
}
}
}