如何检测用户何时在停用时再次运行WP7 XNA应用程序？(How to detect when user has run WP7 XNA Application again while deactivated?)

 我在C＃中使用XNA 4.0编写了一个Windows Phone 7游戏。 
 
 如果用户执行以下操作，似乎可以避免Game.OnExiting方法： 
 
 
 
 在Windows Phone OS中通过Tile启动游戏。 
 
 
 在游戏过程中，按下WINDOWS按钮离开游戏（导致调用Game.OnDeactivated而不是Game.OnExiting ）。 
 
 
 用户通过Windows Phone OS中的Tile再次启动游戏。 
 
 
 我已经阅读了很多关于WP7应用程序生命周期的内容，但是在用户连续两次运行相同应用程序的情况下无法找到任何内容。 
 
 我有一些逻辑，只有在游戏关闭的情况下被调用才有意义，并且重要的是它不会错过（例如上面的情况）。 我无法在OnDeactivated调用它，因为它会导致糟糕的用户体验。 
 
 这是有问题的代码（在我的Game类的实现中找到）： 
 
protected override void OnExiting(object sender, EventArgs args)
{
    // This is what is getting missed!
    ForceSave();

    base.OnExiting(sender, args);
}

protected override void OnDeactivated(object sender, EventArgs args)
{
    base.OnDeactivated(sender, args);

    // I don't want to put ForceSave here because it will get called even if the user is not exiting the game.

    ...
}

protected override void OnActivated(object sender, EventArgs args)
{
    base.OnActivated(sender, args);

    ...
}

I have a Windows Phone 7 game written with XNA 4.0 in C#.
 
It seems that the Game.OnExiting method can be avoided if the user does the following:
 
 
 
Starts game through Tile in Windows Phone OS.
 
 
During gameplay, press the WINDOWS button to leave the game (resulting in a call to Game.OnDeactivated but not Game.OnExiting).
 
 
User starts the game again through the Tile in Windows Phone OS.
 
 
I have read much on the WP7 App Lifecycle, but haven't been able to find anything touching on this case where the user runs the same app twice in a row.
 
I have some logic that only makes sense to be called if the game is shutting down, and is also important that it isn't missed (such as in the case above). I cannot call it in OnDeactivated because it would cause a poor user experience.
 
Here is the code in question (found inside my implementation of the Game class):
 
protected override void OnExiting(object sender, EventArgs args)
{
    // This is what is getting missed!
    ForceSave();

    base.OnExiting(sender, args);
}

protected override void OnDeactivated(object sender, EventArgs args)
{
    base.OnDeactivated(sender, args);

    // I don't want to put ForceSave here because it will get called even if the user is not exiting the game.

    ...
}

protected override void OnActivated(object sender, EventArgs args)
{
    base.OnActivated(sender, args);

    ...
}

原文：https://stackoverflow.com/questions/20591846