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How to create a basic iOS app with Xcode?

In the exciting journey of mobile app development, taking the first step is often an exciting and enriching challenge. With the support of Xcode, developers can create functional and attractive applications. In this session, we will develop a Facebook-like login interface, step-by-step. This process is not only excellent practice, but also improves understanding of the tools iOS offers for building user interfaces.

How to use Storyboard?

To start with, the Storyboard is an essential file in iOS development, where all the screens of the application are managed.

1. Access the main.storyboard file.
2. Notice the iPhone 11-shaped canvas, which will serve as your workspace.

This visualizer not only facilitates the organization and display of screens, but also allows for an intuitive and user-friendly layout.

How to include the Facebook logo in the project?

Including images correctly in your project is essential to maintain organization and ensure that the application works correctly on different devices and resolutions.

1. Save the Facebook logo image in the assets.cassets folder inside the project.
2. Create a new folder (right click > folder) to keep the image directory tidy.
3. Drag and drop the image into the created folder.

A good practice is to make sure you have the 1x, 2x and 3x sizes for all images, but failing that, you can use the 2x size as universal.

What is the object library in iOS?

The object library is a must-have resource in Xcode, providing access to all the components needed to create applications. From buttons to text fields, this library is your best ally.

1. Find the UIImageView component and drag it to the workspace.
2. Assign the logo image using the properties in the right panel.
3. Set the Content Mode to Aspect Fit to ensure that the image retains its proper aspect ratio.

How to apply a custom background color?

The background color of an application can be a distinguishing factor in the design.

1. In the view hierarchy, select View.
2. Modify the background property in the right pane.
3. Assign a custom color using its hexadecimal code.

In the example, the blue color characteristic of Facebook was applied using its specific hexadecimal code.

How to include text fields and buttons?

Text fields and buttons form an essential part of the login form. These elements allow user interaction with the application.

1. In the object library, find and include UITextField for the mail and password fields.
2. Adjust their properties, such as the placeholder, which tells the user what information to enter.
3. Include a UIButton and adjust its properties, such as text color and transparent background.
4. Duplicate buttons as needed for options such as "Register" or "Login".

How to run the application and verify its functionality?

With everything configured, it's time to run the application and see the result of your work.

1. Run the application from Xcode.
2. Interact with the text fields and buttons to make sure they are functional.
3. Use the command command + K to open or close the keyboard in the simulator if necessary.

Now that you have taken this significant first step in application development, we encourage you to continue experimenting. You can create different layouts, such as Twitter or Instagram logins, to hone your skills in design and functionality. Don't forget to keep practicing and learning to continuously improve.