How to Build a Rotation Animation in SwiftUI

Prerequisites

To follow along with this tutorial, you’ll need some basic knowledge in:

• Swift
• At least Xcode 11

---

Setting Up the View

You will be given a button where you will animate when the button is clicked. The first thing to do is to create a variable to know if the button is being clicked or not:

@State private var isRotated = false

Then you will create another variable that represents Animation so that it is easy to tweak from here:

var animation: Animation {
    Animation.easeOut
}

You can play around with the animation in a bit if you create your variable as I did above. You will create a button and a rectangle that will simulate the animation:

VStack(spacing: 20) {
	    // 1
	    Button("Rotate") {
	        self.isRotated.toggle()
	    }
	    // 2
	    Rectangle()
	        .foregroundColor(.green)
	        .frame(width: 200, height: 200)
	        .rotationEffect(Angle.degrees(isRotated ? 300 : 0))
	        .animation(animation)
	}

1. When you click on the button, you will toggle the bool value.
2. A rectangle is created with its properties defined.

---

Rotation Effect

You may modify the animation effect from here by replacing the animation:

var animation: Animation {
    Animation.easeOut
}

Let’s explore multiple different animations. The first would be easeOut, where it will slow down at the end of the animation:

The next animation is easeIn, where it will start slow and then speed up:

The next animation is linear, where it will maintain a constant speed throughout the duration of the animation:

The last one is easeInOut, where it will start slow, speed up, and finally slow down at the end:

---

Nonstop Animation

Now, you are required to rotate the rectangle nonstop. I know it looks like a square — I should have given it a bigger width. Anyway, let’s tweak the animation a little bit.

You will need to tweak two lines of code to make this work. With repeatForever, it will animate nonstop. And by including false, it will not reset but rotate continuously:

var animation: Animation {
    Animation.linear
    .repeatForever(autoreverses: false)
}

The next line of code is to change the degree to 360:

.rotationEffect(Angle.degrees(isRotated ? 360 : 0))

And the effect is as shown:

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Software Used:
XCode 11, SwiftUI

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SwiftUI Scratch Card Effect - Custom Masking - Animation's -View Builder-SwiftUI Tutorials

Hello Guys 🖐🖐🖐🖐
In this Video I’m going to show how to create a Stylish Scratch Card Animation Effect With Custom Masking in SwiftUI | Scratch to reveal content SwiftUI | SwiftUI Custom View Masking | SwiftUI Custom Animation’s | SwiftUI View Builder’s | SwiftUI Gesture’s | Xcode 12 SwiftUI.

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The Best Way to Build a Chatbot in 2021

A useful tool several businesses implement for answering questions that potential customers may have is a chatbot. Many programming languages give web designers several ways on how to make a chatbot for their websites. They are capable of answering basic questions for visitors and offer innovation for businesses.

With the help of programming languages, it is possible to create a chatbot from the ground up to satisfy someone’s needs.

Plan Out the Chatbot’s Purpose

Before building a chatbot, it is ideal for web designers to determine how it will function on a website. Several chatbot duties center around fulfilling customers’ needs and questions or compiling and optimizing data via transactions.

Some benefits of implementing chatbots include:

• Generating leads for marketing products and services
• Improve work capacity when employees cannot answer questions or during non-business hours
• Reducing errors while providing accurate information to customers or visitors
• Meeting customer demands through instant communication
• Alerting customers about their online transactions

Some programmers may choose to design a chatbox to function through predefined answers based on the questions customers may input or function by adapting and learning via human input.

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How to Build a Rotation Animation in SwiftUI

Prerequisites

To follow along with this tutorial, you’ll need some basic knowledge in:

• Swift
• At least Xcode 11

---

Setting Up the View

You will be given a button where you will animate when the button is clicked. The first thing to do is to create a variable to know if the button is being clicked or not:

@State private var isRotated = false

Then you will create another variable that represents Animation so that it is easy to tweak from here:

var animation: Animation {
    Animation.easeOut
}

You can play around with the animation in a bit if you create your variable as I did above. You will create a button and a rectangle that will simulate the animation:

VStack(spacing: 20) {
	    // 1
	    Button("Rotate") {
	        self.isRotated.toggle()
	    }
	    // 2
	    Rectangle()
	        .foregroundColor(.green)
	        .frame(width: 200, height: 200)
	        .rotationEffect(Angle.degrees(isRotated ? 300 : 0))
	        .animation(animation)
	}

1. When you click on the button, you will toggle the bool value.
2. A rectangle is created with its properties defined.

---

Rotation Effect

You may modify the animation effect from here by replacing the animation:

var animation: Animation {
    Animation.easeOut
}

Let’s explore multiple different animations. The first would be easeOut, where it will slow down at the end of the animation:

The next animation is easeIn, where it will start slow and then speed up:

The next animation is linear, where it will maintain a constant speed throughout the duration of the animation:

The last one is easeInOut, where it will start slow, speed up, and finally slow down at the end:

---

Nonstop Animation

Now, you are required to rotate the rectangle nonstop. I know it looks like a square — I should have given it a bigger width. Anyway, let’s tweak the animation a little bit.

You will need to tweak two lines of code to make this work. With repeatForever, it will animate nonstop. And by including false, it will not reset but rotate continuously:

var animation: Animation {
    Animation.linear
    .repeatForever(autoreverses: false)
}

The next line of code is to change the degree to 360:

.rotationEffect(Angle.degrees(isRotated ? 360 : 0))

And the effect is as shown:

#swiftui #swift #mobile #xcode #programming #mobile app

Learn Character Design in After Effects 2D Animation Course

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