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. 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. How can I save all app state?
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1 Answers
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Bind all relevant UI States to some object (aka ViewModel) and serialize these states upon suspending.
The basic page template also includes methods like SaveState and LoadState including a serialized dictionary, where you can store those values.
Another option is to set the page's NavigationCacheMode to Enabled or Required. This will keep the page in memory until your app is terminated.
