Fade In Fade Out Animation in Xamarin iOS

In this article, you will learn how to Use Fade In Fade Out Animation in Xamarin iOS, using Xamarin Studio.

Introduction

Xamarin is a platform to develop cross-platform and multi-platform apps (for example, Windows phone, Android, iOS). In Xamarin platform, the code sharing concept is used. In Xamarin Studio, Visual Studio is also available.

Download Code Here

Prerequisites

• Xamarin Studio.
• Xcode.

The steps given below are required to be followed in order to Use Fade In Fade Out Animation in Xamarin iOS, using Xamarin Studio.

Step 1

Go To Xamarin Studio.

Click New Solution—> select iOS—>select App--> Choose single View App. Afterwards, click Next.

Step 2

In this step, configure your app. Give the app name (Ex:sample), Organization Identifier. Afterwards, click Next.

Step 3

In this step, give your project name (Ex: Sample) and solution name (Ex: Sample). Give the path of your project. Afterwards, click Create.

Step 4

Subsequently, go to the solution. In the solution, get all the files and sources in your project. Now, select Main.storyboard and double click to open Main.storyboard page.

Step 5

After opening the Main.storyboard, you can design this page, as per your desire.

Step 6

Now, go to the toolbox Window. In the toolbox Window, get all the types of the tools and controls. You need to go to the toolbox Window. Now, scroll down and you will see all the tools and controls. You need to drag and drop the Button.
Next You need to align the Button, using constraints.and go to the properties Window. Select the Button and give a name (Ex:btnShow).

Step 7

You need to drag and drop the Second Button.
Next You need to align the Button, using constraints.and go to the properties Window. Select the Button and give a name (Ex:btnHide).

Step 8

You need to drag and drop the View.
Next You need to align the View, using constraints.

Step 9

Now,go to the properties Window. Select the View and give a name (Ex:view1)and set Alpha Value is 0.

Step 10

In this step, go to the ViewController.cs page. write the code given below.

ViewController.cs

using System;
using CoreGraphics;
using UIKit;

namespace XamariniOSFadeAnimation
{
 public partial class ViewController : UIViewController
 {
  protected ViewController(IntPtr handle) : base(handle)
  {
   // Note: this .ctor should not contain any initialization logic.
  }

  public override void ViewDidLoad()
  {
   base.ViewDidLoad();
   // Perform any additional setup after loading the view, typically from a nib.

  }

  partial void BtnHide_TouchUpInside(UIButton sender)
  {
   FadeAnimation(view1, isIn: false, duration: 1, onFinished: null);
  }

  partial void BtnShow_TouchUpInside(UIButton sender)
  {
   FadeAnimation(view1, isIn: true, duration: 1, onFinished: null);
  }


  public static void FadeAnimation(UIView view, bool isIn, double duration = 0.3, Action onFinished = null)
  {
   var minAlpha = (nfloat)0.0f;
   var maxAlpha = (nfloat)1.0f;

   view.Alpha = isIn ? minAlpha : maxAlpha;
   view.Transform = CGAffineTransform.MakeIdentity();
   UIView.Animate(duration, 0, UIViewAnimationOptions.CurveEaseInOut,
    () =>
    {
     view.Alpha = isIn ? maxAlpha : minAlpha;
    },
    onFinished
   );
  }


  public override void DidReceiveMemoryWarning()
  {
   base.DidReceiveMemoryWarning();
   // Release any cached data, images, etc that aren't in use.
  }
 }
}

Step 11

Now, go to Run option , choose Debug and the list of iPhone and iPad simulators, which are available. You can choose any one simulator and run it.

Output

After a few seconds, the app will start running on your iPhone simulator.You will see your app working successfully.

You can click Show Button, Fade in Animation is working Successfully.
You can click Hide Button, Fade in Animation is working Successfully.

Summary

This was the process of how to Use Fade In Fade Out Animation in Xamarin ios , using Xamarin Studio.