windows-phone-8 - 页面上的 Windows Phone 应用程序停用检测

Question

我正在使用 Windows Phone。当我的应用程序停用并进入后台时，我想检测 OnNavigatedFrom 事件上的应用程序停用，以便我可以在应用程序进入后台时实现一些逻辑。我怎样才能做到这一点？？？？？

Answer 1

我自己找到了解决方案。将处理程序附加到您从中导航的页面上的 PhoneApplicationService.Current.Deactivated 事件。

Answer 2

您可以保存从 APP 事件或页面事件中停用它的时间，并将其存储在 IsolatedStorage 中，然后在您的应用重新激活 (OnNavigatedTo) 时检索数据。

Answer 3

使用以下方法（可在 App.xaml.cs 文件中找到）在应用激活或停用时执行逻辑：

// Code to execute when the application is launching (eg, from Start)
// This code will not execute when the application is reactivated
private void Application_Launching(object sender, LaunchingEventArgs e)
{

}

// Code to execute when the application is activated (brought to foreground)
// This code will not execute when the application is first launched
private void Application_Activated(object sender, ActivatedEventArgs e)
{

}

// Code to execute when the application is deactivated (sent to background)
// This code will not execute when the application is closing
private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{

}

// Code to execute when the application is closing (eg, user hit Back)
// This code will not execute when the application is deactivated
private void Application_Closing(object sender, ClosingEventArgs e)
{

}