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Re: Why is Xamarin iOS so slow to compile and deploy?

As far as I'm concerned using Visual Studio on Windows and compiling for iOS is completely unusable right now.

This is very true. My guess is nobody on the Xamarin/Microsoft team use Windows. They all just use overpowered Macs.

Why is Xamarin iOS so slow to compile and deploy?

My biggest problem with Xamarin iOS is how slow it is to build and deploy. I've been using Xamarin for a few years now and I guess I became used to it.

Recently I had to jump back into an Xcode project and wow how quick and easy it was to update UI and run the app. Now I am back to Xamarin and sitting here just waiting for my build to complete. Even though I have not changed any code whatsoever.

Is this just a problem with .Net and we are never going to have similar build and deploy performance that comes with Objective C and XCode ?

gviddy

Re: Shell : Custom icon for selected tab

I tried custom renderer, the class ShellTabLayoutAppearanceTracker is used to customize Tab , but there is no icon option to change , only we can define the select color and unselect color .

So it is impossible i think .

ColeX

Re: Xamarin.Forms Button with only single border on bottom

You could use BoxView, alongside the Button, in case you prefer not to write the custom renderers. For example:

<StackLayout Orientation="Vertical"
             Spacing="0">

    <Button Text="Click here"
            BorderColor="Transparent"
            BorderWidth="0"
            BorderRadius="0" />

    <BoxView HeightRequest="1"
             HorizontalOptions="FillAndExpand"
             VerticalOptions="EndAndExpand"
             Color="Blue" />

</StackLayout>

This would be bottom "border"; if you change StackLayout.Orientation to Horizontal and use BoxView.WidthRequest, or swap Button and BoxView positions, you can get left, right and top "borders".

You can achieve similar effect with other layouts as well, e.g. RelativeLayout and Grid.

nprokopic

Re: Call Navigation.PushAsync from ViewModel

@CameronMurray said:
Thanks for the helper class. When it runs I get this error however

System.InvalidOperationException: PushAsync is not supported globally on Android, please use a NavigationPage.

When you set the MainPage of your application, make sure you wrap it in a navigation page, that error is basically telling you there's no navigation service to handle the push.

In your App.cs or App.xaml.cs....

 public App()
        {
            InitializeComponent();

            MainPage = new NavigationPage(new Startpage());
        }

NMackay

Re: Does anyone know how to be able to locate a location on xamarin forms with google maps?

// Get location with Xamarin.Essentials
var userLocation = await Xamarin.Essentials.Geolocation.GetLocationAsync();

// Convert to Xamarin.Forms.Maps
var userPosition = new Position(userLocation.Latitude, userLocation.Longitude);
var map = new Map(MapSpan.FromCenterAndRadius(userPosition, Distance.FromMeters(100)))
{
    IsShowingUser = true
};

JoeManke

Re: How to convert URI to File Path from a content page

Thanks Jarvan, that's exactly what I needed and I am sure will come in handy.

I found this simple video showing an implementation of the Dependency Service:

xxxx://www.youtube.com/watch?v=Tmsmlt4aVLk

retrohead

Re: Path too long Xamarin iOS Distribute

As the following thread mentioned

https://forums.xamarin.com/discussion/83132/path-too-long-during-build-how-to-change-directory-for-xamarin-android
https://forums.xamarin.com/discussion/6265/problem-to-build-sample-project
https://forums.xamarin.com/discussion/79362/error-the-specified-path-file-name-or-both-are-too-long-the-fully-qualified-file-name-must-be-le

Move your project to the shorter path ,e,g, C:\ . Or Use Long Path Tool Software to fix it .

ColeX

Re: How to convert URI to File Path from a content page

Try to convert url to file path on each platform, then pass the path result to PCL using DependencyService. Just call the method and pass the uri in ContentPage, you'll get the path.

Create an interface
Implement the interface on each platform
Register the platform implementations
Resolve the platform implementations

Jarvan

Re: How to load cookies on iOS 13?

The code you post above demonstrates how to retrieve cookies from NSUserDefaults.
And it seems you stored the cookies depending on the values of cookieArray. It could miss some cookies if you mistake some keys.
You can store the whole cookies like:

// Convert the property arraies to data
var cookieData = NSKeyedArchiver.ArchivedDataWithRootObject(propertyArray);

NSUserDefaults.StandardUserDefaults.SetValueForKey(cookieData, new NSString("cookieArray"));
NSUserDefaults.StandardUserDefaults.Synchronize();

// Retrieve it like
var cookieData = NSUserDefaults.StandardUserDefaults.DataForKey(new NSString("cookieArray"));
var propertyArray = NSKeyedUnarchiver.UnarchiveObject(cookieData) as NSArray;
if (propertyArray == null)
{
    return;
}

for (nuint i=0; i<propertyArray.Count; i++)
{
    var cookieDict = propertyArray.GetItem<NSDictionary>(i);
    var cookie = NSHttpCookie.CookieFromProperties(cookieDict);
}

LandLu