Akavache | persistent key-value store | Database library
kandi X-RAY | Akavache Summary
kandi X-RAY | Akavache Summary
Akavache is an asynchronous, persistent (i.e. writes to disk) key-value store created for writing desktop and mobile applications in C#, based on SQLite3. Akavache is great for both storing important data (i.e. user settings) as well as cached local data that expires.
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QUESTION
I met a problem with refresh list.
I'm using MasterDetailPage
with init default in Visual Studio 2019 (Xamarin.Forms 4.3.0.991250) & Akavache 6.6.1, has a variable is Items of type ObservableCollection
.
The first, i added one item to cache (i call this object is TodoItem). And then show ListView with Items binding got from Akavache cache, but it's not working, Items has values -> ListView
not refresh.
I tried with something:
Change version (Xamarin.Forms & Akavache), Ex: XF 4.1 highest version and akavache downgrade 6.0, 6.1, 6.2... => not working.
If setup Items with hardcode new ObservableCollection(new ListView(){ ... }) => it's working.
If app running, i change something on the layout and save (Xaml hot reload) -> it's working.
public ObservableCollection Items { get; set; } = new ObservableCollection();
...
ANSWER
Answered 2020-Feb-14 at 18:00In order to make a change to a variable bindend to the UI you have to do it inside BeginInvokeOnMainThread
Something like this:
QUESTION
I am a newbie to OOP and IOC container. I need to understand how to use depency injection. My app's simple structure is as below.
The code below belongs to CacheService:
...ANSWER
Answered 2020-Jan-22 at 08:51As far as I can tell, this usage is not possible because your IoC container would not know how to resolve ICacheService
, since you registered the instances as CacheService
. When DryIoc tries to resolve SettingsPageViewModel
it would encounter ICacheService
and find the type not being registered. At least this is how the Unity container behaves.
Anyway, even if you registered "LocalMachineCache"
and "UserAccountCache"
as ICacheService
I doubt that it'd work, since there would be no way to know for DryIoc which one shall be used with SettingsPageViewModel
, hence you'd have to define which one to resolve.
According to its documentation, Prism resolves dependencies by the respective parameter name (unless I did not misunderstand this, see here). Assuming that you need the local machine cache in your settings, you could register it as "localMachineCache"
(renamed it to stick with common C# coding conventions in the constructor of SettingsPageViewModel
) and give the parameter that very name
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