public MyTaskList()
{
isHaveMoreItems = true;
if (roamingSettings.Values.ContainsKey(Constants.SettingName.LoadPageSize))
{
pageSize = Convert.ToInt32(roamingSettings.Values[Constants.SettingName.LoadPageSize]);
}
UserAccountHelper userAccount = new UserAccountHelper();
userName = userAccount.GetUserNameFromLocker();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
this.loading.IsActive = true;
UserAccountHelper userAccount = new UserAccountHelper();
userName = userAccount.GetUserNameFromLocker();
IntialMyContactModel();
//初始化页面内容
object[] parameters = e.Parameter as object[];
InitPageContent(parameters);
this.loading.IsActive = false;
base.OnNavigatedTo(e);
}
/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used such as when the application is launched to open a specific file.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
protected override void OnLaunched(LaunchActivatedEventArgs e)
{
#if DEBUG
if (System.Diagnostics.Debugger.IsAttached)
{
this.DebugSettings.EnableFrameRateCounter = true;
}
#endif
AppShell shell = Window.Current.Content as AppShell;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (shell == null)
{
// Create a AppShell to act as the navigation context and navigate to the first page
shell = new AppShell();
// Set the default language
shell.Language = Windows.Globalization.ApplicationLanguages.Languages[0];
shell.AppFrame.NavigationFailed += OnNavigationFailed;
if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
}
}
// Place our app shell in the current Window
Window.Current.Content = shell;
if (shell.AppFrame.Content == null)
{
// When the navigation stack isn't restored, navigate to the first page
// suppressing the initial entrance animation.
shell.AppFrame.Navigate(typeof(Views.Page1), e.Arguments, new Windows.UI.Xaml.Media.Animation.SuppressNavigationTransitionInfo());
}
UserAccountHelper userAccount = new UserAccountHelper();
userName = userAccount.GetUserNameFromLocker();
// Ensure the current window is active
Window.Current.Activate();
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
UserAccountHelper userAccout = new UserAccountHelper();
userName = userAccout.GetUserNameFromLocker();
if (userName == string.Empty)
{
await new MessageBox("你尚未登陆", MessageBox.NotifyType.CommonMessage).ShowAsync();
this.Frame.Navigate(typeof(UserAccount));
return;
}
this.lvInformationList.ItemsSource = myTaskList;
myTaskList.DataLoading += LstInformationList_DataLoading;
myTaskList.DataLoaded += LstInformationList_DataLoaded;
base.OnNavigatedTo(e);
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
UserAccountHelper userAccount = new UserAccountHelper();
userName = userAccount.GetUserNameFromLocker();
if (userName == string.Empty)
{
await new MessageBox("你尚未登陆", MessageBox.NotifyType.CommonMessage).ShowAsync();
this.Frame.Navigate(typeof(UserAccount));
return;
}
//当从ShowPicture返回时，如果执行了取消上传的操作，e.Parameter是有值的
//那么就将这个StorageFile从App.list中移除
if (e.Parameter is Dictionary <string, Image> )
{
Dictionary <string, Image> data = e.Parameter as Dictionary <string, Image>;
KeyValuePair <string, Image> value = data.FirstOrDefault();
if (value.Value != null)
{
App.lstPicture.RemoveAt(Convert.ToInt32(value.Key));
#region 2016年2月14日19:34:27 此代码依靠页面缓存，实现：如果取消一图片上传，回到此界面时此图片预览消失，但是由于需要改动页面状态中某些图片的名字（Name属性），与系统默认的缓存机制发生冲突，会发生VS无法捕获的异常
//Image image = value.Value;
//string strRight = null;
////string strLeft = "null";
//Object objRight = image.GetValue(RelativePanel.RightOfProperty);
//if (objRight != null)
//{
// strRight = objRight.ToString();
//}
////object objLeft= image.GetValue(RelativePanel.LeftOfProperty);
////if(objLeft!=null)
////{
//// strLeft = objLeft.ToString();
////}
////this.tbMessage.Text = "AlignRight:" + strRight + "\nAlignLeft:" + strLeft;
//string name = image.Name;
//string imgNeedModifyName = "";
//foreach (var obj in root.Children)
//{
// if(obj is Image)
// {
// object objRightName = obj.GetValue(RelativePanel.RightOfProperty);
// if (objRightName != null)
// {
// string strRightName = objRightName.ToString();
// if (strRightName == name)
// {
// Image imgRightNeedModify = obj as Image;
// imgNeedModifyName=imgRightNeedModify.Name;
// imgRightNeedModify.SetValue(RelativePanel.RightOfProperty, strRight);
// break;
// //isNeedModifyName = true;
// }
// //if(isNeedModifyName)
// //{
// // Image imageNeedModifyName = obj as Image;
// // imageNeedModifyName.Name = (Convert.ToInt32(imageNeedModifyName.Name) - 1).ToString();
// //}
// }
// }
//}
//bool isNeedModifyName = false;
//foreach (var obj in root.Children)
//{
// if (obj is Image)
// {
// object objRightName = obj.GetValue(RelativePanel.RightOfProperty);
// if (objRightName != null)
// {
// string strRightName = objRightName.ToString();
// if (strRightName == name)
// {
// isNeedModifyName = true;
// }
// if (isNeedModifyName)
// {
// Image imageNeedModifyName = obj as Image;
// imageNeedModifyName.Name = (Convert.ToInt32(imageNeedModifyName.Name) - 1).ToString();
// }
// }
// }
//}
//numForImageName--;
//image.Visibility = Visibility.Collapsed;
#endregion
#region 废旧代码 2016年2月13日22:56:13
//int pictureCounter = App.list.Count;
//numForImageName = 0;
//if (pictureCounter > 0)
//{
// int i = 0;
// while (i < pictureCounter)
// {
// Image image = new Image();
// BitmapImage bitmap = new BitmapImage();
// using (var stream = await App.list[i].OpenReadAsync())
// {
// await bitmap.SetSourceAsync(stream);
// image.Source = bitmap;
// image.Name = numForImageName.ToString();
// image.Height = 50;
// image.Width = 50;
// image.Margin = new Thickness(5);
// image.Tapped += Image_Tapped;
// if (imageName == "")
// {
// image.SetValue(RelativePanel.AlignLeftWithPanelProperty, true);
// imageName = image.Name;
// }
// else
// {
// image.SetValue(RelativePanel.RightOfProperty, imageName);
// imageName = image.Name;
// }
// root.Children.Add(image);
// i++;
// numForImageName++;
// }
// }
// btnAdd.SetValue(RelativePanel.RightOfProperty, imageName);
// //btnAdd.Visibility = Visibility.Collapsed;
//}
#endregion
}
}
//注意:页面状态全部由我自己维护，所以以下代码使用App.list中储存的StorageFile
//来恢复想要上传的图片预览和按钮
numForImageName = 0;
int pictureCounter = App.lstPicture.Count;
if (pictureCounter > 0)
{
int i = 0;
while (i < pictureCounter)
{
Image image = new Image();
BitmapImage bitmap = new BitmapImage();
using (var stream = await App.lstPicture[i].OpenReadAsync())
{
await bitmap.SetSourceAsync(stream);
image.Source = bitmap;
image.Name = numForImageName.ToString();
image.Height = 50;
image.Width = 50;
image.Margin = new Thickness(5);
image.Tapped += Image_Tapped;
if (imageName == "")
{
image.SetValue(RelativePanel.AlignLeftWithPanelProperty, true);
imageName = image.Name;
}
else
{
image.SetValue(RelativePanel.RightOfProperty, imageName);
imageName = image.Name;
}
root.Children.Add(image);
i++;
numForImageName++;
}
}
btnAddPicture.SetValue(RelativePanel.RightOfProperty, imageName);
}
base.OnNavigatedTo(e);
}