Examples and Projects - SwiftUI for Masterminds 7th Edition

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SwiftUI for Masterminds

How to take advantage of SwiftUI and AI Agents to develop apps for iPhones, iPads, and Macs

7th Edition
July 2026
ISBN: 978-1-0699942-4-0

Examples and Projects

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Chapter 1 - App Development

Listing 1-1: Xcode template

Listing 1-2: Playground file

Listing 1-3: Generating multiple previews

Chapter 2 - SwiftUI Framework

Listing 2-1: Initial view

Listing 2-2: Displaying values with a Text view

Listing 2-3: Formatting a value for a Text view

Listing 2-4: Displaying a date with a Text view

Listing 2-5: Displaying a timer with a Text view

Listing 2-6: Applying modifiers to a view

Listing 2-7: Using the system font

Listing 2-8: Applying multiple styles to a text

Listing 2-9: Nesting Text views

Listing 2-10: Styling the font

Listing 2-11: Formatting text

Listing 2-12: Truncating text

Listing 2-13: Using standard fonts

Listing 2-14: Using custom fonts

Listing 2-15: Assigning a fixed size to a view

Listing 2-16: Creating flexible containers

Listing 2-17: Adding padding to a view

Listing 2-18: Assigning a specific padding for each side

Listing 2-19: Assigning padding with Edge values

Listing 2-20: Implementing Color views

Listing 2-21: Defining the color with RGB values

Listing 2-22: Assigning a dynamic color

Listing 2-23: Assigning a custom color

Listing 2-24: Assigning a color to the text of a Text view

Listing 2-25: Assigning a background color to a Text view

Listing 2-26: Assigning a background color to a view with a padding

Listing 2-27: Assigning a border to the view

Listing 2-28: Displaying a view in front of another view

Listing 2-29: Applying a predefined gradient to a view

Listing 2-30: Blending colors

Listing 2-31: Applying a material

Listing 2-32: Applying a material to the view's content

Listing 2-33: Displaying an image

Listing 2-34: Loading an image from the ImageResource structure

Listing 2-35: Clipping the image

Listing 2-36: Resizing the image

Listing 2-37: Resizing an image to fit the view

Listing 2-38: Resizing and clipping the image to fill the view

Listing 2-39: Resizing image to fill the container

Listing 2-40: Applying style modifiers to an Image view

Listing 2-41: Applying visual effects to an Image view

Listing 2-42: Displaying SF symbols

Listing 2-43: Styling a symbol

Listing 2-44: Assigning a variant to a symbol

Listing 2-45: Displaying multicolor symbols

Listing 2-46: Displaying a multicolor symbol with custom colors

Listing 2-47: Displaying a variable SF Symbol

Listing 2-48: Displaying a variable multicolor SF Symbol

Listing 2-49: Displaying a text with an SF Symbol

Listing 2-50: Performing a task when the view appears

Listing 2-51: Applying custom modifiers

Listing 2-52: Customizing a custom modifier

Listing 2-53: Creating a vertical stack of views

Listing 2-54: Adding a space between the views

Listing 2-55: Creating a horizontal stack of views

Listing 2-56: Aligning a horizontal stack of views

Listing 2-57: Nesting stacks

Listing 2-58: Aligning the views with a flexible space

Listing 2-59: Aligning the views to the left and the top

Listing 2-60: Aligning nested containers

Listing 2-61: Creating a ZStack

Listing 2-62: Setting the Z index of a view

Listing 2-63: Assigning modifiers to the stack and its content

Listing 2-64: Ignoring the safe area

Listing 2-65: Expanding the safe area

Listing 2-66: Arranging the views with priorities by default

Listing 2-67: Assigning a higher priority to a view

Listing 2-68: Defining a view with a fixed size

Listing 2-69: Arranging the views in groups

Listing 2-70: Returning different views form the body property

Listing 2-71: Defining a grid layout

Listing 2-72: Defining a multicolumn cell

Listing 2-73: Embedding a grid within another grid

Listing 2-74: Wrapping views in an AnyView view

Listing 2-75: Constructing views with the @ContentBuilder property wrapper

Listing 2-76: Constructing reusable views with the @ContentBuilder property wrapper

Listing 2-77: Returning an empty view

Listing 2-78: Additional views

Listing 2-79: Responding to updates in the states of the environment

Listing 2-80: Activating dark mode in the preview from code

Listing 2-81: Adding custom properties to the environment

Chapter 3 - Declarative User Interface

Listing 3-1: Defining a state

Listing 3-2: Defining multiple states

Listing 3-3: Defining bidirectional binding

Listing 3-4: Using @Binding properties

Listing 3-5: Accessing the values of a Binding structure

Listing 3-6: Creating a Binding structure

Listing 3-7: Creating a Binding structure with an immutable value

Listing 3-8: Defining a state property for a preview

Listing 3-9: Implementing Button views

Listing 3-10: Using functions to perform the action for the button

Listing 3-11: Referencing a method

Listing 3-12: Adding and removing views from the interface

Listing 3-13: Disabling a button

Listing 3-14: Styling buttons

Listing 3-15: Assigning a role to a button

Listing 3-16: Liquid glass buttons

Listing 3-17: Implementing large buttons

Listing 3-18: Changing the shape of a button

Listing 3-19: Buttons with SF Symbols

Listing 3-20: Defining custom styles for the button

Listing 3-21: Configuring a text field

Listing 3-22: Styling a text field

Listing 3-23: Responding to the Done button

Listing 3-24: Responding to changes in focus

Listing 3-25: Closing the keyboard

Listing 3-26: Checking the values before storing

Listing 3-27: Disabling the button

Listing 3-28: Controlling user's input

Listing 3-29: Accepting only integer numbers

Listing 3-30: Defining a multiline text field

Listing 3-31: Selecting text

Listing 3-32: Using a secure text field

Listing 3-33: Implementing a text editor

Listing 3-34: Customizing a text editor

Listing 3-35: Selecting text in a text editor

Listing 3-36: Creating attributed text

Listing 3-37: Allowing users to generate attributed text

Listing 3-38: Applying attributes to the selected text

Listing 3-39: Applying attributes to the current font

Listing 3-40: Applying attributes to the text

Listing 3-41: Manually applying attributes to ranges of characters

Listing 3-42: Applying attributes to specific characters

Listing 3-43: Inspecting runs to find if they apply a specific attribute

Listing 3-44: Implementing a Toggle

Listing 3-45: Including a subtitle

Listing 3-46: Defining a custom label for the Toggle view

Listing 3-47: Implementing a toggle button

Listing 3-48: Creating a basic slider

Listing 3-49: Designing a slider

Listing 3-50: Customizing the slider

Listing 3-51: Customizing the slider for Macs

Listing 3-52: Showing progress

Listing 3-53: Showing an activity indicator

Listing 3-54: Creating a stepper

Listing 3-55: Modifying the interface when the value is incremented or decremented

Listing 3-56: Defining a group box

Listing 3-57: Storing our data in an observable object

Listing 3-58: Working with an observable object

Listing 3-59: Initializing the properties of an observable object

Listing 3-60: Initializing properties when the view appears

Listing 3-61: Disabling observation for a property

Listing 3-62: Updating the views manually

Listing 3-63: Assigning the observable object to the view's environment

Listing 3-64: Getting a reference to the observable object from the environment

Chapter 4 - Lists

Listing 4-1: Creating a dynamic list of views

Listing 4-2: Creating a list with a standard design

Listing 4-3: Defining a model to work with lists of views

Listing 4-4: Injecting the model into the environment

Listing 4-5: Creating a list of views with data from the model

Listing 4-6: Creating a scrollable list of views

Listing 4-7: Configuring the scroll view

Listing 4-8: Scrolling the list of views horizontally

Listing 4-9: Adapting the size of the views to the container

Listing 4-10: Scrolling the content page by page

Listing 4-11: Scrolling two views at a time

Listing 4-12: Defining each view as a scroll target

Listing 4-13: Scrolling the content programmatically

Listing 4-14: Applying a visual effect to the transition

Listing 4-15: Applying multiple visual effects to the transition

Listing 4-16: Creating a grid with a fixed number of items

Listing 4-17: Defining flexible items

Listing 4-18: Defining adaptive items

Listing 4-19: Reordering the items in a grid

Listing 4-20: Adding swipe actions to the rows of a list

Listing 4-21: Creating a list of views with the List view

Listing 4-22: Creating a plain list

Listing 4-23: Customizing the rows

Listing 4-24: Mixing static and dynamic content in a list

Listing 4-25: Dividing the content into sections

Listing 4-26: Configuring the section separators

Listing 4-27: Configuring the rows from the environment

Listing 4-28: Providing an ordered list of values

Listing 4-29: Adding an index to navigate the list

Listing 4-30: Deleting rows

Listing 4-31: Activating the edit mode

Listing 4-32: Moving rows

Listing 4-33: Selecting a row

Listing 4-34: Selecting multiple rows

Listing 4-35: Customizing the edit mode

Listing 4-36: Customizing the selection

Listing 4-37: Storing the selection in the model

Listing 4-38: Implementing a custom button to delete the rows

Listing 4-39: Refreshing the list

Listing 4-40: Defining the model to create a hierarchical list

Listing 4-41: Displaying a hierarchical list

Listing 4-42: Implementing an OutlineGroup view

Listing 4-43: Defining a model to test tables

Listing 4-44: Creating a table with multiple columns

Listing 4-45: Defining the rows manually

Listing 4-46: Sorting the values by column

Listing 4-47: Sorting only the calories

Listing 4-48: Allowing the user to select items in a table

Listing 4-49: Using a context menu to process a row

Listing 4-50: Defining the content of a column with a Toggle view

Listing 4-51: Defining a custom sort comparator

Listing 4-52: Sorting Boolean values on a table

Listing 4-53: Defining a model with hierarchical data

Listing 4-54: Disclosing hierarchical data on a table

Listing 4-55: Defining a picker

Listing 4-56: Selecting an initial value

Listing 4-57: Listing values by index

Listing 4-58: Implementing a segmented picker

Listing 4-59: Defining a DatePicker to select a date

Listing 4-60: Limiting the DatePicker to a range of values

Listing 4-61: Presenting a picker with a spinning wheel

Listing 4-62: Picking multiple dates

Listing 4-63: Defining a form

Listing 4-64: Defining custom labels for a form

Listing 4-65: Styling a form

Listing 4-66: Disclosing controls

Listing 4-67: Defining a custom container

Listing 4-68: Implementing a custom container

Listing 4-69: Applying different styles to the views in a custom container

Listing 4-70: Adding a container value

Listing 4-71: Modifying a container value

Listing 4-72: Using container values

Listing 4-73: Changing the container value of a view

Chapter 5 - Navigation

Listing 5-1: Initiating a navigation stack

Listing 5-2: Setting the title mode

Listing 5-3: Adding a button to the navigation bar

Listing 5-4: Adding multiple buttons to a toolbar

Listing 5-5: Grouping multiple related buttons

Listing 5-6: Adding buttons to the bottom toolbar

Listing 5-7: Defining the buttons intent

Listing 5-8: Creating a popup menu

Listing 5-9: Creating submenus

Listing 5-10: Changing the visibility priority of a toolbar item

Listing 5-11: Displaying a toolbar item on the trailing side

Listing 5-12: Hiding a toolbar item

Listing 5-13: Customizing the navigation bar

Listing 5-14: Customizing the items in a navigation bar

Listing 5-15: Creating our own navigation bar

Listing 5-16: Filtering the data in the model

Listing 5-17: Displaying a search bar

Listing 5-18: Moving the search bar to the navigation bar

Listing 5-19: Minimizing the search bar

Listing 5-20: Activating the search field

Listing 5-21: Performing the search only when the Return/Done key is pressed

Listing 5-22: Suggesting terms to the user

Listing 5-23: Cancelling the search programmatically

Listing 5-24: Adding scope buttons

Listing 5-25: Searching by title and author

Listing 5-26: Adding tokens

Listing 5-27: Filtering books by author

Listing 5-28: Including a navigation link

Listing 5-29: Defining a second view

Listing 5-30: Creating a custom back button

Listing 5-31: Selecting rows with a navigation link

Listing 5-32: Defining a Detail view

Listing 5-33: Using custom navigation

Listing 5-34: Adding and removing views from the path

Listing 5-35: Removing a view from the path

Listing 5-36: Controlling the navigation path from the model

Listing 5-37: Controlling the navigation path from the initial view

Listing 5-38: Adding views to the navigation path programmatically

Listing 5-39: Returning to different views

Listing 5-40: Working with the navigation path from the model

Listing 5-41: Opening a view with a zoom transition

Listing 5-42: Displaying a sheet

Listing 5-43: Defining the view for the sheet

Listing 5-44: Assigning a predefined height

Listing 5-45: Assigning a custom background

Listing 5-46: Declaring the size of the sheet

Listing 5-47: Presenting a sheet for every value on the list

Listing 5-48: Editing a book

Listing 5-49: Presenting the inspector

Listing 5-50: Defining the size of the inspector

Listing 5-51: Showing a popover

Listing 5-52: Defining the content of the popover

Listing 5-53: Displaying an alert view

Listing 5-54: Defining an Alert view with multiple buttons

Listing 5-55: Defining an action sheet

Listing 5-56: Defining a tip

Listing 5-57: Presenting a tip

Listing 5-58: Presenting a tip in a popover

Listing 5-59: Showing the tips for testing

Listing 5-60: Invalidating a tip

Listing 5-61: Showing the tip only once

Listing 5-62: Adding actions to a tip

Listing 5-63: Performing an action

Listing 5-64: Defining a TabView view with two tabs

Listing 5-65: Defining a prominent tab

Listing 5-66: Displaying a badge on a tab

Listing 5-67: Selecting the Settings view

Listing 5-68: Minimizing the tabs

Listing 5-69: Adding an accessory view

Listing 5-70: Adding a search tab

Listing 5-71: Configuring the TabView view to show content in pages

Listing 5-72: Expanding the TabView view with a sidebar

Listing 5-73: Adding a header to the sidebar

Listing 5-74: Creating a section for the sidebar

Listing 5-75: Customizing the TabView view

Listing 5-76: Designing a TabView view to manage books

Listing 5-77: Updating the model

Listing 5-78: Designing the rows according to the app's configuration

Listing 5-79: Configuring the app

Listing 5-80: Searching for books

Listing 5-81: Defining a two-column split view

Listing 5-82: Defining the view for the left column

Listing 5-83: Defining the Detail view

Listing 5-84: Showing an item by default

Listing 5-85: Enabling navigation in the right column

Listing 5-86: Creating a navigation path for the right column

Listing 5-87: Expanding the cover

Listing 5-88: Adding navigation to the left column

Listing 5-89: Opening a view on the left column

Listing 5-90: Providing the list of authors

Listing 5-91: Defining a three-column layout

Listing 5-92: Showing the authors

Listing 5-93: Showing the books

Listing 5-94: Hiding columns programmatically

Listing 5-95: Configuring the columns

Chapter 6 - Multiplatform Applications

Listing 6-1: Adapting the interface to the horizontal space available

Listing 6-2: Managing the app's current state

Listing 6-3: Updating the app's interface to the horizontal size class

Listing 6-4: Using a GeometryReader to fine tune the interface

Listing 6-5: Adapting the interface to the current orientation

Listing 6-6: Setting and reading preferences

Listing 6-7: Aligning images to the center with standard values

Listing 6-8: Aligning an image to the center with custom values

Listing 6-9: Aligning all images to the center with custom values

Listing 6-10: Defining a custom layout

Listing 6-11: Selecting a layout

Listing 6-12: Detecting the platform before compiling

Listing 6-13: Defining a multiplatform interface

Listing 6-14: Detecting the version of the operating system

Listing 6-15: Adding a menu to the menu bar

Listing 6-16: Assigning a keyboard shortcut to a menu option

Listing 6-17: Adding options to a standard menu

Listing 6-18: Removing options

Listing 6-19: Adding a submenu

Listing 6-20: Defining a property in the model to store the index of the selected option

Listing 6-21: Selecting options

Listing 6-22: Defining a state to enable and disable a menu option

Listing 6-23: Enabling and disabling a menu option

Listing 6-24: Defining a TextField view to enable and disable the option

Listing 6-25: Storing a focus state in the FocusedValues structure

Listing 6-26: Passing the focus state to the FocusedValues structure

Listing 6-27: Disabling a menu option according to the focus state of a view

Listing 6-28: Defining a two-column interface for a multi-platform application

Listing 6-29: Adding items to the toolbar for a multi-platform application

Listing 6-30: Hiding the toolbar on the Mac

Listing 6-31: Hiding only the toolbar on the Mac

Listing 6-32: Showing a tooltip for a button

Listing 6-33: Showing suggestions for a text field

Listing 6-34: Defining a model to test alternate backgrounds

Listing 6-35: Creating a list with alternate background

Listing 6-36: Opening an auxiliary window

Listing 6-37: Opening a window programmatically

Listing 6-38: Closing a window programmatically

Listing 6-39: Configuring the window to adopt the size of the content

Listing 6-40: Assigning a fixed size to a view

Listing 6-41: Assigning a position by default

Listing 6-42: Defining a custom position and size for the window

Listing 6-43: Disabling window controls

Listing 6-44: Applying a custom design to a window

Listing 6-45: Dragging a view

Listing 6-46: Defining a Settings scene

Listing 6-47: Inserting a control in the system's menu bar

Listing 6-48: Defining the control to open a view

Chapter 7 - Data Storage

Listing 7-1: Storing and reading values from User Defaults

Listing 7-2: Defining a SwiftData model

Listing 7-3: Creating the container

Listing 7-4: Controlling the navigation path from an observable object

Listing 7-5: Fetching books from the database

Listing 7-6: Storing a book in the database

Listing 7-7: Storing unique values

Listing 7-8: Using the #Unique macro to avoid duplicates

Listing 7-9: Creating indexes for better performance

Listing 7-10: Creating a second model to store the authors

Listing 7-11: Creating a relationship with the Author class

Listing 7-12: Defining the relationship in the Book class

Listing 7-13: Defining the relationship in the Author class

Listing 7-14: Controlling the values selected by the user from the model

Listing 7-15: Opening additional views for navigation

Listing 7-16: Assigning an author to a book

Listing 7-17: Listing the authors

Listing 7-18: Adding new authors

Listing 7-19: Displaying the author's name

Listing 7-20: Including all the models in the container

Listing 7-21: Deleting objects

Listing 7-22: Sorting objects

Listing 7-23: Sorting books by author and year

Listing 7-24: Sorting with a lexical comparator

Listing 7-25: Filtering books by year

Listing 7-26: Filtering books by author and year

Listing 7-27: Filtering books by text

Listing 7-28: Defining a dynamic query

Listing 7-29: Defining a dynamic query

Listing 7-30: Searching books by title

Listing 7-31: Fetching objects manually

Listing 7-32: Counting objects

Listing 7-33: Checking for duplicates

Listing 7-34: Providing sample data for the previews

Listing 7-35: Implementing a custom container in the preview

Listing 7-36: Preparing the selectedBook property to add new books

Listing 7-37: Opening the view to edit a book

Listing 7-38: Editing a book

Listing 7-39: Storing images externally

Listing 7-40: Displaying an image from a UIImage object

Listing 7-41: Displaying the image in the DetailView view

Listing 7-42: Converting a UIImage object into data

Listing 7-43: Creating Book objects with images from the Asset Catalog

Listing 7-44: Adding a property to organize the items in sections

Listing 7-45: Displaying the books in sections

Listing 7-46: Defining a Codable structure

Listing 7-47: Storing and decoding data

Listing 7-48: Encoding data

Listing 7-49: Displaying encoded data

Listing 7-50: JSON file

Listing 7-51: Decoding with JSON

Listing 7-52: Encoding with JSON

Listing 7-53: Saving files

Listing 7-54: Opening a sheet to add files to the model

Listing 7-55: Creating new files

Listing 7-56: Getting the list of files

Listing 7-57: Listing the files created by the user

Listing 7-58: Reading the content of a file

Listing 7-59: Allowing the user to open a file

Listing 7-60: Displaying the contents of a file

Listing 7-61: Deleting a file

Listing 7-62: Allowing the user to delete files

Listing 7-63: Storing text in a file

Listing 7-64: Editing the content of a file

Listing 7-65: Loading a file from the bundle

Listing 7-66: Displaying the content of a file stored in the bundle

Listing 7-67: Defining a document model

Listing 7-68: Creating a Document app

Listing 7-69: Editing the document

Listing 7-70: Exporting a document

Listing 7-71: Importing a document

Chapter 8 - Graphics & Animations

Listing 8-1: Drawing standard shapes

Listing 8-2: Filling a shape with a color

Listing 8-3: Defining a border

Listing 8-4: Defining a custom border

Listing 8-5: Combining shapes with other views

Listing 8-6: Assigning a shape as the background of a button

Listing 8-7: Defining a linear gradient

Listing 8-8: Defining a linear gradient with custom stops

Listing 8-9: Defining a circular gradient

Listing 8-10: Defining a mesh gradient

Listing 8-11: Adding a shadow to a shape

Listing 8-12: Filling a shape with an image

Listing 8-13: Defining a custom path

Listing 8-14: Combining lines and arcs

Listing 8-15: Combining lines and ellipses

Listing 8-16: Creating complex curves

Listing 8-17: Creating a custom shape view

Listing 8-18: Implementing custom shape views

Listing 8-19: Displacing an image

Listing 8-20: Rotating the image

Listing 8-21: Clipping the image

Listing 8-22: Adding a border to an irregular shape

Listing 8-23: Rotating a shape

Listing 8-24: Inverting a shape with the scale() modifier

Listing 8-25: Trimming a path

Listing 8-26: Creating concentric views

Listing 8-27: Assigning a concentric shape to an image

Listing 8-28: Concentric shapes with different corners

Listing 8-29: Concentric shapes with uniform corners

Listing 8-30: Creating an image from a view

Listing 8-31: Drawing an image on the canvas

Listing 8-32: Drawing an image of a custom size

Listing 8-33: Drawing shapes and text

Listing 8-34: Rotating the canvas

Listing 8-35: Rotating an image

Listing 8-36: Performing multiple transformations

Listing 8-37: Preparing images

Listing 8-38: Clipping the canvas

Listing 8-39: Applying filters to the graphics

Listing 8-40: Providing the data for a chart

Listing 8-41: Visualizing data with a bar chart

Listing 8-42: Visualizing data with a line chart

Listing 8-43: Defining a custom scale for the y axis

Listing 8-44: Assigning different styles based on a value

Listing 8-45: Representing the values with different types of marks

Listing 8-46: Drawing a line in the plot area

Listing 8-47: Selecting a value

Listing 8-48: Visualizing large datasets with a point plot

Listing 8-49: Plotting a mathematical function

Listing 8-50: Representing the values with different types of marks

Listing 8-51: Visualizing two series of values

Listing 8-52: Visualizing two series of values with a bar chart

Listing 8-53: Defining the positions of the bars

Listing 8-54: Scrolling the chart

Listing 8-55: Defining the coordinates values for a 3D chart

Listing 8-56: Creating a 3D chart

Listing 8-57: Changing the orientation of a 3D chart

Listing 8-58: Plotting a mathematical function in 3D

Listing 8-59: Animating a view

Listing 8-60: Applying a linear animation

Listing 8-61: Declaring a specific duration

Listing 8-62: Configuring the animation

Listing 8-63: Defining a custom animation

Listing 8-64: Animating multiple states at a time

Listing 8-65: Defining an animatable shape

Listing 8-66: Animating a shape

Listing 8-67: Updating the interface

Listing 8-68: Animating the canvas

Listing 8-69: Creating a real animation

Listing 8-70: Adding and removing a view with a transition

Listing 8-71: Defining an asymmetric transition

Listing 8-72: Combining transitions

Listing 8-73: Customizing the transition

Listing 8-74: Coordinating transitions

Listing 8-75: Coordinating views

Listing 8-76: Performing a content transition

Listing 8-77: Animating an SF Symbol

Listing 8-78: Animating an SF Symbol when a value changes

Listing 8-79: Configuring animations

Listing 8-80: Scaling a symbol

Listing 8-81: Removing a symbol from the screen

Listing 8-82: Adapting the layout to the effect

Listing 8-83: Replacing a symbol

Listing 8-84: Applying the liquid glass effect to a view

Listing 8-85: Applying a clear liquid glass effect

Listing 8-86: Applying a different shape to the liquid glass effect

Listing 8-87: Making the view interactive

Listing 8-88: Applying the liquid glass effect to a group of views

Listing 8-89: Joining views with the Liquid Glass effect

Listing 8-90: Animating views with Liquid Glass effect

Chapter 9 - Gestures

Listing 9-1: Detecting a tap gesture on an image

Listing 9-2: Showing the image

Listing 9-3: Detecting a long press gesture

Listing 9-4: Disabling the tap gesture

Listing 9-5: Defining the shape of the content

Listing 9-6: Defining a TapGesture recognizer

Listing 9-7: Defining a LongPressGesture recognizer

Listing 9-8: Controlling the states of a gesture with an enumeration

Listing 9-9: Defining a MagnifyGesture recognizer

Listing 9-10: Determining a minimum and a maximum scale

Listing 9-11: Defining a RotateGesture recognizer

Listing 9-12: Allowing the user to drag an image

Listing 9-13: Providing a custom preview for the gesture

Listing 9-14: Dropping images into an Image view

Listing 9-15: Providing feedback to the user

Listing 9-16: Dragging custom values

Listing 9-17: Using a custom content type

Listing 9-18: Dragging and dropping custom values

Listing 9-19: Pasting values from the clipboard

Listing 9-20: Copying and pasting values from the clipboard

Chapter 10 - MapKit

Listing 10-1: Displaying a map

Listing 10-2: Displaying a hybrid map

Listing 10-3: Selecting points of interest

Listing 10-4: Configuring the map from the data model

Listing 10-5: Zooming in on a region of the map

Listing 10-6: Showing the current latitude and longitude

Listing 10-7: Disabling panning

Listing 10-8: Defining the boundaries for the camera

Listing 10-9: Applying the boundaries to the map

Listing 10-10: Adding markers to the map

Listing 10-11: Displaying annotations

Listing 10-12: Drawing a circle over the labels

Listing 10-13: Drawing a line

Listing 10-14: Finding places with Local Search

Listing 10-15: Searching for places

Listing 10-16: Selecting markers

Listing 10-17: Showing a callout with additional information

Listing 10-18: Opening a sheet with additional information

Listing 10-19: Displaying map controls

Listing 10-20: Creating custom controls

Listing 10-21: Creating a Look Around preview

Listing 10-22: Creating a Look Around preview

Listing 10-23: Presenting the Look Around sheet

Listing 10-24: Calculating a route

Listing 10-25: Displaying a route

Listing 10-26: Determining a location on a map

Listing 10-27: Finding the street address from map coordinates

Listing 10-28: Allowing the user to select a location to find an address

Listing 10-29: Finding the map coordinates of an address

Listing 10-30: Allowing the user to find an address on the map

Listing 10-31: Asking permission and responding to errors

Listing 10-32: Requesting authorization and showing the user's location

Listing 10-33: Implementing the user location button

Chapter 11 - Web

Listing 11-1: Opening a website

Listing 11-2: Opening URLs from code

Listing 11-3: Processing the user's URLs

Listing 11-4: Loading a website with a WebView view

Listing 11-5: Initializing a WebPage object for navigation

Listing 11-6: Allowing the user to load a website

Listing 11-7: Updating the URL in the text field

Listing 11-8: Moving through the navigation history

Listing 11-9: Loading a remote document from the model

Listing 11-10: Displaying the document's content

Listing 11-11: Loading a JSON document

Listing 11-12: Listing the values from the document

Chapter 12 - Notifications

Listing 12-1: Listening to notifications from the model

Listing 12-2: Listening to notifications

Listing 12-3: Sending notifications

Listing 12-4: Adding information to the notification

Listing 12-5: Reading the value in the notification

Listing 12-6: Cancelling the task

Listing 12-7: Interface to test the keyboard

Listing 12-8: Scrolling the interface to make room for the keyboard

Listing 12-9: Listening to keyboard notifications

Listing 12-10: Modifying the interface when the keyboard state changes

Listing 12-11: Sending notifications

Listing 12-12: Scheduling a notification

Listing 12-13: Playing a sound

Listing 12-14: Attaching an image to a notification

Listing 12-15: Defining a delegate for the User Notification Center

Listing 12-16: Showing notifications while the app is running

Listing 12-17: Defining an observable property for KVO

Listing 12-18: Observing a property

Listing 12-19: Working with a KVO property

Listing 12-20: Detecting changes in the app's state

Chapter 13 - Framework Integration

Listing 13-1: Preparing a UIKit view to work with SwiftUI

Listing 13-2: Showing a UIKit view within a SwiftUI view

Listing 13-3: Sending and receiving values from the SwiftUI view

Listing 13-4: Receiving and sending values to a UIKit view

Listing 13-5: Creating a UIKit view controller

Listing 13-6: Creating the representable view for a UIKit view controller

Listing 13-7: Loading a UIKit view controller from a SwiftUI view

Chapter 14 - Media

Listing 14-1: Creating a Photo picker

Listing 14-2: Embedding the Photos Picker in our interface

Listing 14-3: Hiding controls

Listing 14-4: Defining the model for multiple selection

Listing 14-5: Allowing the user to perform multiple selections

Listing 14-6: Creating the Image Picker Controller to take pictures

Listing 14-7: Defining the interface to take pictures

Listing 14-8: Saving the picture in the Photo Library

Listing 14-9: Sharing the image with other applications

Listing 14-10: Defining a UIView subclass to show the camera's preview video

Listing 14-11: Defining the properties we need to manage the camera

Listing 14-12: Asking for permission to use the camera

Listing 14-13: Initializing the camera

Listing 14-14: Showing the video from the camera on the screen

Listing 14-15: Taking a picture

Listing 14-16: Processing the image

Listing 14-17: Showing the image

Listing 14-18: Taking a picture

Listing 14-19: Preparing the video to be played

Listing 14-20: Playing a video

Listing 14-21: Automatically playing a video

Listing 14-22: Presenting views over the video

Listing 14-23: Building a custom video player

Listing 14-24: Building a custom video player

Listing 14-25: Showing a video

Listing 14-26: Preparing the video player

Listing 14-27: Playing and pausing the video

Listing 14-28: Executing an asynchronous method to detect the end of the video

Listing 14-29: Playing a list of videos

Listing 14-30: Showing a color picker

Chapter 15 - iCloud

Listing 15-1: Storing a value in iCloud

Listing 15-2: Defining the interface to store and read values from iCloud

Listing 15-3: Storing multiple values in iCloud

Listing 15-4: Reading multiple values from iCloud

Listing 15-5: Saving multiple values in iCloud

Listing 15-6: Creating the document

Listing 15-7: Initializing the model required to store a document in iCloud

Listing 15-8: Processing query results

Listing 15-9: Updating the document

Listing 15-10: Defining the main interface

Listing 15-11: Editing the document

Listing 15-12: Data model to work with multiple documents

Listing 15-13: Processing the list of files in the container

Listing 15-14: Updating the container

Listing 15-15: Adding and removing documents from the container

Listing 15-16: Opening, saving, and closing a document

Listing 15-17: Listing the documents available in the container

Listing 15-18: Creating new documents

Listing 15-19: Displaying the document's content

Listing 15-20: Preparing the models for CloudKit

Listing 15-21: Creating the container

Listing 15-22: Showing the list of books

Listing 15-23: Adding books

Chapter 16 - Internationalization

Listing 16-1: Testing String Catalogs

Listing 16-2: Selecting the language for the previews

Listing 16-3: Including comments for the translator

Listing 16-4: Localizing strings

Listing 16-5: Localizing values

Listing 16-6: Specifying singular and plural versions of the text

Chapter 17 - App Store

There are no Examples in this Chapter

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7th Edition

July 2026

ISBN: 978-1-0699942-4-0

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For Masterminds books include everything you need to develop professional applications. Create amazing websites and insanely great apps for iPhones, iPads and Mac computers.

Apple Intelligence for Masterminds
2nd Edition 2026

Swift for Masterminds
2nd Edition 2026

HTML5 for Masterminds
3rd Edition 2017

UIKit for Masterminds
1st Edition 2021