如何在挂起Windows Phone 8.1 rt xaml C时保存ui状态
[英]how to save ui state on suspending Windows phone 8.1 rt xaml c#
问题描述
I found basic pages for suspend an app on windows phone 8.1 but I didn't find how to save UI state on suspending. 
我在Windows Phone 8.1上找到了挂起应用程序的基本页面，但没有找到如何在挂起时保存UI状态。 I'm making an audio player app which have in mainpage a grid which I display or not and it contains media buttons, thumbnail, slider etc. When app is forced to suspend itself and I reopen it, it restart like first opening so it lose the app state. 我正在制作一个音频播放器应用程序，该应用程序在主页上有一个不显示或不显示的网格，它包含媒体按钮，缩略图，滑块等。当应用程序被迫暂停自身并重新打开时，它像第一次打开一样重新启动，因此丢失应用状态。 How can I save all app state? 如何保存所有应用状态？
1 个解决方案
解决方案1
0 2015-07-19 18:08:54
Bind all relevant UI States to some object (aka ViewModel ) and serialize these states upon suspending. 将所有相关的UI状态绑定到某个对象（也称为ViewModel ），并在挂起时序列化这些状态。
The basic page template also includes methods like SaveState and LoadState including a serialized dictionary, where you can store those values. 基本页面模板还包括诸如SaveState和LoadState类的方法，其中包括序列化的字典，您可以在其中存储这些值。
Another option is to set the page's NavigationCacheMode to Enabled or Required . 另一个选项是将页面的NavigationCacheMode设置为Enabled或Required 。 This will keep the page in memory until your app is terminated. 这会将页面保留在内存中，直到您的应用终止。
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