/// <summary>
/// 打开城市管理窗口
/// </summary>
private void OpenAddCity()
{
if (addCity.IsOpen != true)//防止在（初次）设置时再打开设置
{
askl = new AskLocation(true);
askl.Width = Window.Current.Bounds.Width;
askl.Height = Window.Current.Bounds.Height;
addCity.Child = askl;
addCity.IsOpen = true;
}
}
/// <summary>
/// 在此页将要在 Frame 中显示时进行调用。
/// </summary>
/// <param name="e">描述如何访问此页的事件数据。Parameter
/// 属性通常用于配置页。</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
Current = this;
nowColor=GetColor();
background.Background = new SolidColorBrush(nowColor);
if (e.NavigationMode == NavigationMode.New)
{
try
{
var file = await ApplicationData.Current.LocalFolder.GetFileAsync("save.data");//获取城市记录文件
string str = await FileIO.ReadTextAsync(file);
saveWeather = JsonConvert.DeserializeObject<WeatherInfo>(str);
await GetWeather();
UpdateInfo();
TimeSpan sp = DateTime.Now - saveWeather.UpdateTime;
if (sp.Minutes>30)
{
await GetWeather();
}
}
catch (Exception)//第一次打开，文件未创建
{
askl = new AskLocation(false);
askl.Width = Window.Current.Bounds.Width;
askl.Height = Window.Current.Bounds.Height;
addCity.Child = askl;
addCity.IsOpen = true;
}
}
}
