/// <summary>
/// SplitView中ListItem选中项事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void splitViewListItems_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (null != svModel && svModel.Count > 0)
{
var selectItem = svModel[0];
//如果当前显示“退 出”，则表示已经登录，要清除用户信息
if (selectItem.SplitViewTitle.Contains("退 出"))
{
localSettings.Values["userIdentity"] = null;
MainPageSplitViewItemEntity svItemLoginOrLogOff = new MainPageSplitViewItemEntity();
//判断用户是否登录过
string userIdentity = localSettings.Values["userIdentity"] as string;
//不为空则表示登录过
if (!string.IsNullOrEmpty(userIdentity))
{
svItemLoginOrLogOff.IconFont = "\ue603";
svItemLoginOrLogOff.SplitViewTitle = "退 出";
svItemLoginOrLogOff.FontFamilyProperty = "ms-appx:///Assets/Resources/iconfont.ttf#iconfont";
}
else
{
svItemLoginOrLogOff.IconFont = "\ue604";
svItemLoginOrLogOff.SplitViewTitle = "登 录";
svItemLoginOrLogOff.FontFamilyProperty = "ms-appx:///Assets/Resources/iconfont.ttf#iconfont";
}
MainPageSplitViewItemEntity svItemRegister = new MainPageSplitViewItemEntity();
svItemRegister.IconFont = "\ue605";
svItemRegister.SplitViewTitle = "注 册";
svItemRegister.FontFamilyProperty = "ms-appx:///Assets/Resources/iconfont.ttf#iconfont";
if (null != svModel)
{
svModel.Clear();
}
svModel.Add(svItemLoginOrLogOff);
svModel.Add(svItemRegister);
splitViewListItems.ItemsSource = svModel;
}
else if (splitViewListItems.SelectedIndex == 1)
{
//导航到“注册”页
this.Frame.Navigate(typeof(UserRegister));
}//如果当前显示“登录”，则表示未登录，要转向登录页面
else if (selectItem.SplitViewTitle.Contains("登 录"))
{
//导航到“登录”页
this.Frame.Navigate(typeof(UserLogin));
}
}
}
/// <summary>
/// 初始化主页数据的方法
/// </summary>
public async void InitMainPageDatas()
{
//使用导航缓存
NavigationCacheMode = Windows.UI.Xaml.Navigation.NavigationCacheMode.Disabled;
MainPageSplitViewItemEntity svItemLoginOrLogOff = new MainPageSplitViewItemEntity();
//判断用户是否登录过
string userIdentity = localSettings.Values["userIdentity"] as string;
//不为空则表示登录过
if (!string.IsNullOrEmpty(userIdentity))
{
svItemLoginOrLogOff.IconFont = "\ue603";
svItemLoginOrLogOff.SplitViewTitle = "退 出";
svItemLoginOrLogOff.FontFamilyProperty = "ms-appx:///Assets/Resources/iconfont.ttf#iconfont";
}
else
{
svItemLoginOrLogOff.IconFont = "\ue604";
svItemLoginOrLogOff.SplitViewTitle = "登 录";
svItemLoginOrLogOff.FontFamilyProperty = "ms-appx:///Assets/Resources/iconfont.ttf#iconfont";
}
MainPageSplitViewItemEntity svItemRegister = new MainPageSplitViewItemEntity();
svItemRegister.IconFont = "\ue605";
svItemRegister.SplitViewTitle = "注 册";
svItemRegister.FontFamilyProperty = "ms-appx:///Assets/Resources/iconfont.ttf#iconfont";
splitViewListItems.ItemsSource = null;
svModel.Add(svItemLoginOrLogOff);
svModel.Add(svItemRegister);
splitViewListItems.ItemsSource = svModel;
try
{
LoadInitData = true;
articlesModel = await HTTPRequestHelper <ArticlesEntity> .requestAndResponseCollections(MobileInterfaceFactory.GET_ALL_ARTICLES_INFO, "{\"paramJsonDatas\":" + pageIndex + "}");
mainPageList.ItemsSource = articlesModel;
progressOfInitFirstDatas.Visibility = Visibility.Collapsed;
}
catch (HttpRequestException requestEx)
{
//初始化失败计数+1
initDataFailedCount += 1;
//异常之后再次请求
InitMainPageDatas();
//如果请求次数超出2次，说明不是MySQL超时自动关闭连接的问题而是其他问题，弹出消息框
if (initDataFailedCount > 2)
{
await ContentDialogTemplateUtil.showContentDialog(SystemMessage.DialogCommonTitleMsg + "HttpRequestException", requestEx.Message, true, false, SystemMessage.DialogButtonByOkValueMsg, String.Empty, ContentDialogStyle.NORMAL).ShowAsync();
}
}
catch (Exception ex)
{
//异常之后再次请求
InitMainPageDatas();
await ContentDialogTemplateUtil.showContentDialog(SystemMessage.DialogCommonTitleMsg + "Exception", ex.Message, true, false, SystemMessage.DialogButtonByOkValueMsg, String.Empty, ContentDialogStyle.NORMAL).ShowAsync();
}
}