Nov 13, 2022

Swift Tips: Zip different sized arrays

Swift uses the first option, the resulting sequence will have a length equal to the shorter of the two inputs. Creates a sequence of pairs built out of two underlying sequences. func zip<Sequence1, Sequence2>(_ sequence1: Sequence1,_ sequence2: Sequence2 ) -> Zip2Sequence<Sequence1, Sequence2> where Sequence1 : Sequence, Sequence2 : Sequence Returna…

Swift

1 min read

Swift

1 min read

Swift Tips: Zip different sized arrays

Swift uses the first option, the resulting sequence will have a length equal to the shorter of the two inputs.

Creates a sequence of pairs built out of two underlying sequences.

func zip<Sequence1, Sequence2>(_ sequence1: Sequence1,_ sequence2: Sequence2 ) -> Zip2Sequence<Sequence1, Sequence2> where Sequence1 : Sequence, Sequence2 : Sequence

Returna…

Nov 3, 2022

iOS Tips: Perform Hit Test on a View

Hit test helps us to understand if a view can be interactive with user. func hitTest(_ point: CGPoint,with event: UIEvent? ) -> UIView? When the touch event is performed by the user, the system calls this function to trigger the touch or gesture recognizer an returns the frontmost view interacted…

I OS

1 min read

I OS

1 min read

Nov 3, 2022

iOS Tips: Data Persistence

In this article, I would like to talk about ways of persisting data in iOS apps. Persistence in computer science is defined as ‘the characteristic of state that outlives the process that created it’. Data persistence means storing any type of data on disk so that the same data can…

Swift

2 min read

Swift

2 min read

Nov 3, 2022

Swift Tips: Failable init

Initializers might work or might not. For the case of not working, we can return nil. We write a failable initializer by placing a question mark after the init keyword (init?) init?() init!() It solves the confusion between Factory methods and initializers. We can’t create an failable and non failable…

Swift

1 min read

Swift

1 min read

Swift Tips: Failable init

Initializers might work or might not. For the case of not working, we can return nil.

We write a failable initializer by placing a question mark after the init keyword (init?)

init?()
init!()

It solves the confusion between Factory methods and initializers.

We can’t create an failable and non failable…

Nov 24, 2021

Dynamically Change the iOS App Icon in Xamarin.Forms

In iOS 10.3, Apple added a function that allows us to dynamically change the icon of our application. The Apple documentation states that: supportsAlternateIcons — It is readonly. A Boolean value indicating whether the app is allowed to change its icon. …

I OS

2 min read

Dynamically Change the iOS App Icon in Xamarin.Forms

I OS

2 min read

Nov 17, 2021

Adding CoreML model to your Xamarin.iOS Projects

CoreML allows us to develop a Machine Learning project on iOS. Applications developed using CoreML can perform all kinds of tasks such as problem solving, image recognition using trained models. We can do this with Xamarin.iOS. The first thing you have to do for this is to set ourselves a…

I OS

1 min read

Adding CoreML model to your Xamarin.iOS Projects

I OS

1 min read

Adding CoreML model to your Xamarin.iOS Projects

CoreML allows us to develop a Machine Learning project on iOS. Applications developed using CoreML can perform all kinds of tasks such as problem solving, image recognition using trained models.

We can do this with Xamarin.iOS. The first thing you have to do for this is to set ourselves a…

May 12, 2021

Xamarin Tips: Access Progress Bar from the first page to the second page?

We can use MessagingCenter for this. In your first page, subscribe a message: public FirstPage() { MessagingCenter.Subscribe<SecondPage>(this, "StartProgress", (sender) => { StartProgress(); }); } public void StartProgress() { //do progression here //and set Progress bar } In second page send the message: private void Onpress(s, e) { MessagingCenter.Send(this, "StartProgress")…

Xamarin Forms

1 min read

Xamarin Tips: Access Progress Bar from the first page to the second page?

Xamarin Forms

1 min read

Xamarin Tips: Access Progress Bar from the first page to the second page?

We can use MessagingCenter for this. In your first page, subscribe a message:

public FirstPage()
{
  MessagingCenter.Subscribe<SecondPage>(this, "StartProgress", (sender) =>
  {
    StartProgress();
   }); 
}
    
public void StartProgress()
{
   //do progression here
   //and set Progress bar 
}

In second page send the message:

private void Onpress(s, e)
{
   MessagingCenter.Send(this, "StartProgress")…

May 5, 2021

iOS Biometric Authentication with Xamarin Forms

In this article, I will first examine the FaceID and TouchID authentication methods and then I will talk about how to add them to our Xamarin Forms applications. iOS Biometric Authentication Before we move on to how to use these in practice, let’s see these technologies and how they work on iOS. Biometric…

Xamarin

5 min read

Xamarin

5 min read

Apr 2, 2021

Xamarin Tips: Change screen orientation with MessagingCenter

We can force the pages into Landscape mode at runtime as needed. UWP, iOS and Android require different approach, so here’s how we can handled it. Xamarin.Forms: public partial class MyAwesomePage : ContentPage { public MyAwesomePage() { InitializeComponent(); } protected override void OnAppearing() { base.OnAppearing(); MessagingCenter.Send(this, "SetLandscapeModeOn"); }

Xamarin Ios

1 min read

Xamarin Tips: Change screen orientation with MessagingCenter

Xamarin Ios

1 min read

Apr 2, 2021

Xamarin Tips: Round Button in Xamarin.Forms with Fonts

We can create a simple round buttton with font icon in Xamarin.Forms application like below: Add font family to your shared app as an EmbeddedResource Register the font file with the assembly, in a file such as AssemblyInfo.cs, using the ExportFont attribute. using Xamarin.Forms; using Xamarin.Forms.Xaml; [assembly: XamlCompilation(XamlCompilationOptions.Compile)] [assembly: ExportFont(“fa-solid-900.ttf”…

Xamarin Forms

1 min read

Xamarin Forms

1 min read

Xamarin Tips: Round Button in Xamarin.Forms with Fonts

We can create a simple round buttton with font icon in Xamarin.Forms application like below:

Add font family to your shared app as an EmbeddedResource
Register the font file with the assembly, in a file such as AssemblyInfo.cs, using the ExportFont attribute.

using Xamarin.Forms;using Xamarin.Forms.Xaml;[assembly: XamlCompilation(XamlCompilationOptions.Compile)][assembly: ExportFont(“fa-solid-900.ttf”…